bluuebunny/crossref_metadata_2025 huggingface dataset:
Desempenho e características de carcaça de cordeiros alimentados com dietas contendo alta proporção de concentrado adicionadas de agentes tamponantes
Authors: Gastaldello Junior Adilson Luis , Pires Alexandre Vaz , Susin Ivanete , Mendes Clayton Quirino , Ferreira Evandro Maia , Mourão Gerson Barreto
Published: May 2010

Objetivou-se com este estudo avaliar os efeitos da adição de bicarbonato de sódio ou de fontes de calcário com diferentes granulometrias na ração, associadas ou não a monensina sódica, sobre o desempenho e as características de carcaça de cordeiros confinados recebendo dietas contendo alta proporção de concentrado. Quarenta e dois cordeiros Santa Inês com peso inicial de 21 ± 3 kg e 88 ± 5 dias de idade foram distribuídos em blocos completos casualizados em arranjo fatorial 2 × 3, com seis tratamentos e sete repetições. Os animais foram alimentados com rações contendo 90% de concentrado, 10% de feno de "coastcross", uma fonte de calcário (calcário calcítico ou calcário calcítico tipo filler) ou bicarbonato de sódio (NaHCO3), com ou sem adição de monensina sódica (30 mg/kg da MS). Não foi observada influência dos agentes tamponantes no consumo de matéria seca e no ganho de peso médio diário. Entretanto, a conversão alimentar dos animais alimentados com as rações contendo monensina sódica (3,32 kg MS/kg de ganho) foi melhor que naqueles que consumiram as rações sem esse aditivo (3,58 kg MS/kg de ganho). Não houve efeito dos agentes tamponantes nos parâmetros de carcaça avaliados, observando-se valores médios de 50,4%; 2,4%; 13,9 cm² e 1,9 mm para o rendimento de carcaça quente, a perda por resfriamento, a área de olho-de-lombo e a espessura de gordura, respectivamente. A adição de monensina melhora a conversão alimentar e pode aumentar a rentabilidade do sistema de produção de cordeiros confinados.
Bionutritional efficiency of crossbred beef cattle finished on feedlot andslaughtered at different body weights
Authors: Mello Renius , Queiroz Augusto César de , Faria Marcelo Henrique de , Henrique Douglas Sampaio , Maldonado Fabiana
Published: May 2010

The objective of this study was to assess the bionutritional efficiency of crossbred F1 Red Angus × Nellore (½ RA ½ N) and F1 Blonde D'Aquitaine × Nellore (½ BA ½ N) young bulls finished on feedlot and slaughtered at 480, 520 and 560 kg body weight. A completely randomized experimental design in a 2 × 3 (genetic group × slaughter weight) factorial arrangement with six replicates was used. The ½ BA ½ N young bulls showed higher kidney, pelvic and inguinal fat (KPIF, kg and % BW) and lower multivariate biological nutritional index (MBNI) and residual feed intake than ½ RA ½ N young bulls. The young bulls slaughtered at heavier weight had larger ribeye area (cm²), fat thickness over the 12-13th rib, fat thickness over the rump, KPIF (kg and % BW), dry matter intake (DMI, kg/d), net energy intake (MJ/d) and metabolizable protein intake (g/d), and MBNI compared to young bulls slaughtered at lighter weight. Furthermore, the ½ BA ½ N young bulls slaughtered at 480 kg had lower feed conversion than the others. On the other hand, the average daily weight gain (kg/d), DMI (% BW and g/BW0.75), feed efficiency and Kleiber ratio did not differ between genetic group, slaughter weight and genetic group versus slaughter weight interaction. Therefore, crossbred F1 Blonde D'Aquitaine × Nellore young bulls and animals slaughtered at lighter weights are more bionutritionally efficient in the finishing phase on feedlot.
Comportamento ingestivo de cordeiros e digestibilidade dos nutrientes de dietas contendo alta proporção de concentrado e diferentes fontes de fibra em detergente neutro
Authors: Mendes Clayton Quirino , Turino Vicente de França , Susin Ivanete , Pires Alexandre Vaz , Morais Janice Barreto de , Gentil Renato Shinkai
Published: May 2010

Dois experimentos foram realizados para avaliar os efeitos da substituição da fibra em detergente neutro (FDN) do bagaço de cana-de-açúcar in natura pela FDN da casca de soja em dietas com alta proporção de concentrado sobre o comportamento ingestivo de cordeiros e a digestibilidade dos nutrientes. No primeiro experimento, 60 cordeiros com 16,4 ± 0,3 kg de peso corporal e idade inicial de 67 ± 2 dias foram distribuídos em delineamento de blocos completos casualizados, em esquema fatorial 2 × 2 + 1, composto de duas fontes de FDN (bagaço de cana in natura ou casca de soja), dois teores de FDN (14 ou 18%) e uma dieta controle contendo 100% de concentrado. No segundo experimento, cinco cordeiros foram distribuídos em quadrado latino 5 × 5 e submetidos às mesmas dietas do experimento 1. As dietas contendo as fontes de fibra promoveram maior consumo de matéria seca, matéria orgânica e FDN e maior tempo de ingestão, ruminação e mastigação (minutos/dia) em comparação à dieta contendo 100% de concentrado. As dietas contendo o bagaço de canade-açúcar in natura proporcionaram maior atividade de ruminação que aquelas com casca de soja. Entretanto, a utilização da casca de soja proporcionou menor atividade de mastigação e maior digestibilidade dos nutrientes em relação ao bagaço de cana-de-açúcar in natura. A casca de soja pode ser utilizada como única fonte adicional de FDN em dietas contendo alto teor de concentrado para cordeiros.
Fermentação ruminal e produção de metano em bovinos alimentados com feno de capim-tifton 85 e concentrado com aditivos
Authors: Rivera Astrid Rivera , Berchielli Telma Teresinha , Messana Juliana Duarte , Velasquez Paula Toro , Franco Ana Vera Martins , Fernandes Lauriston Bertelli
Published: May 2010

Objetivou-se avaliar o efeito do uso de monensina, complexo de leveduras, ácidos graxos poliinsaturados e aminoácidos no consumo de matéria seca e nutrientes, na estimativa da digestibilidade ruminal, nos parâmetros de fermentação ruminal (pH, concentração de nitrogênio amoniacal e de ácidos graxos de cadeia curta), na população de protozoários e na produção de metano. Foram utilizados seis bovinos e com peso corporal de 530 ± 15 kg, recebendo complexo de leveduras, ácidos graxos poliinsaturados e aminoácidos (5 g/dia); monensina (5 g/dia); caulim (5 g/dia), usado como controle adicionado à dieta composta de feno de capim-tifton 85 (Cynodon spp.); e concentrado, na relação 80:20. O delineamento experimental adotado para análise do consumo e da digestibilidade foi o de blocos completos casualizados e, para análise dos parâmetros ruminais e da produção de metano, o de parcelas subdivididas. O consumo foi influenciado pelo uso de monensina na dieta, mas não diferiu entre os aditivos. As digestibilidades da matéria seca e dos nutrientes não foram influenciadas pelo fornecimento dos aditivos. A relação acetato:propionato nos animais alimentados com a dieta com monensina foi menor que naqueles que receberam o complexo de leveduras e ácidos graxos poliinsaturados e aminoácidos, diminuindo a perda de energia na forma de metano. O pH e a concentração de nitrogênio amoniacal foram adequados para o crescimento bacteriano. A concentração de metano não é alterada pelo uso dos aditivos testados.
Effect of breed type and ionophore supplementation on growth and carcass characteristic in feedlot hair lambs
Authors: Salinas-Chavira Jaime , Lara-Juarez Alfredo , Gil-González Abraham , Jimenez-Castro Jorge , Garcia-Castillo Ramón , Ramírez-Bribiesca Efrén
Published: May 2010

The effects of supplementing feedlot diets with ionophores and breed type were assessed on growth rate and carcass characteristics in hair lambs. Twenty four intact males, 12 Pelibuey × Dorper (PDo) and 12 Pelibuey × Damara (PDa) lambs, 17.9 ± 3.7 kg initial weight, were housed in individual pens for a 60-d feeding trial. The lambs were assigned randomly into four diets: control without additives (C); 25 µg/g monensin (M); 28 µg/g salinomycin (S); 28 µg/g S for 20 d, and 25 µg/g M for the next 40 d (SM). Each diet was supplied to six lambs. Data were analyzed as a randomized complete block design in a 4 × 2 factorial arrangement, with four diets and two breed types of hair lambs (PDo and PDa). All diets were formulated to contain 14% CP and 2.6 Mcal ME/kg dry matter. At the end of the feeding trial carcass images were recorded in the last intercostal space (12th and 13th ribs) using ultrasound equipment to measure the Longissimus dorsi muscle area and subcutaneous fat (SF). The average daily gain (ADG), daily dry matter intake, feed:gain ratio, subcutaneous fat and Longissimus dorsi area were not affected by ionophore supplementation.. The Pelibuey × Dorper group tended to show better average daily gain than Pelibuey × Damara (262 g/d and 235 g/d, respectively). Daily dry matter intake, feed:gain ratio and subcutaneous fat were not affected by breed type. The Pelibuey × Dorper lambs had greater Longissimus dorsi area (16.74 cm²) than the Pelibuey × Damara (14.29 cm²) lambs. The growth rate was not influenced by the inclusion of ionophores. Pelibuey × Dorper lambs showed better average daily gain and carcass characteristics than Pelibuey × Damara lambs.
Typology and characterization of goat milk production systems in the Cariris Paraibanos
Authors: Costa Roberto Germano , Dal Monte Hélio Luiz Beretta , Pimenta Filho Edgard Cavalcanti , Holanda Júnior Evandro Vasconcelos , Cruz George Rodrigo Beltrão da , Menezes Marcos Paulo Carrera
Published: May 2010

This work was aimed to identify the typology and the characteristics of the goat milk production systems. Seventy rural properties were researched. Multivariate data analysis with cluster formation techinique was used, and also the identification of five different groups of production systems. The production systems were classified through technical and economical efficiency, ranking groups 1 and 2 as high technological level, groups 3 and 4 as medium level, and the group 5 as low level. The high technological level systems used practices of more rational handling with larger technological employment becoming better specialized. These systems present the largest revenues of milk and unitary net profit. Medium technological production systems adopt technological recommendations and look for alternatives of handling practices. Production system 1 adopts intensive sanitary practices for the farmyard facilities and stables, but this does not happen in the production system 2. Vermifuge is applied three times a year in system 1 while in the system 2 it is applied twice a year. The producers of the systems 1 and 2 obtain more financial resources through official credit lines, and the producers of the group 2 are more punctual on the pay off deadlines.
Behavior of beef cattle in silvipastoral systems with eucalyptus
Authors: Souza Wander de , Barbosa Orlando Rus , Marques Jair de Araújo , Gasparino Eliane , Cecato Ulysses , Barbero Leandro Martins
Published: May 2010

It was aimed to verify the effect of the presence of trees and their heights in silvipastoral system on the intake behavior of Nellore heifers in the summer. Ten heifers for the following systems were used: system without shade, silvipastoral system with 8-meter and 18-meter trees. The data were collected in three days during 12 hours, subdivided in morning (7:15 a.m. to 1. p.m.) and afternoon (1:15 p.m. to 7 p.m.). It was evaluated the times and frequency of grazing, rumination, idle and the percentage of time that the animals remained in the shade; black globe-humidity index, whose average and minimum values (86 and 82) were equal for 8-meter tree system and 18-meter tree system; however they were lower when compared to the without shade system (89 and 86). There was an interaction between the systems and the periods for all the analyzed variables, except for the rumination frequency. For system without shade, the grazing time did not differ between morning (202 min) and afternoon (187 min); however the grazing frequency was lower for the afternoon (3.17). For 8-meter trees systems and 18 meter trees system, the grazing time in the afternoon, respectively, with 195.50 and 219.00 min was higher than in the morning, respectively, with 128.00 and 158.50 minutes. The rumination time was higher in the morning for all systems. The grazing frequency for 8-meter trees was 3.58, for the without shade system it was 3.05 and for 18-meter tree system it was 2.22. A higher idle time and the idle frequency was found in system without shade (97.50 min and 3.80 respectively) in the afternoon. For 8-meter tree system (98.50 min and 4.47 respectively) and 18-meter tree system (127.00 min and 4.27 respectively), they were higher in the morning. The animals remained under shade for an average of 43.49% (with trees with 8 m) and 49.81% (with trees with 18 m) of the time. It was concluded that the presence of trees modify the time and the frequency in grazing and idle; however, it does not influence the time and frequency in rumination.
Brazilian offshore wave climate based on NWW3 reanalysis
Authors: Pianca Cássia , Mazzini Piero Luigi F. , Siegle Eduardo
Published: May 2010

This paper provides a description of the wave climate off the Brazilian coast based on an eleven-year time series (Jan/1997-Dec/2007) obtained from the NWW3 operational model hindcast reanalysis. Information about wave climate in Brazilian waters is very scarce and mainly based on occasional short-term observations, the present analysis being the first covering such temporal and spatial scales. To define the wave climate, six sectors were defined and analyzed along the Brazilian shelf-break: South (W1), Southeast (W2), Central (W3), East (W4), Northeast (W5) and North (W6). W1, W2 and W3 wave regimes are determined by the South Atlantic High (SAH) and the passage of synoptic cold fronts; W4, W5 and W6 are controlled by the Intertropical Convergence Zone (ITCZ) and its meridional oscillation. The most energetic waves are from the S, generated by the strong winds associated to the passage of cold fronts, which mainly affect the southern region. Wave power presents a decrease in energy levels from south to north, with its annual variation showing that the winter months are the most energetic in W1 to W4, while in W5 and W6 the most energetic conditions occur during the austral summer. The information presented here provides boundary conditions for studies related to coastal processes, fundamental for a better understanding of the Brazilian coastal zone.
Tycho Brahe e Kepler na escola: uma contribuição à inserção de dois artigos em sala de aula
Authors: Praxedes Gilmar , Peduzzi Luiz O.Q.
Published: May 2010

Sob o pressuposto de que a história e a filosofia da ciência podem ser úteis à educação científica, desenvolve-se uma reflexão epistemológica acerca do potencial educativo de dois artigos: "Entrevista com Tycho Brahe" e "Entrevista com Kepler - do seu nascimento à descoberta das duas primeiras leis". O trabalho tem como objetivo subsidiar, epistemológica e metodologicamente, o professor interessado em utilizar esses artigos em sala de aula, mas que, por diversos motivos, não tem familiaridade com a literatura crítica relativa às potencialidades e aos cuidados no uso da história da ciência no ensino de física. Nessa perspectiva, procura-se auxiliar o professor a identificar nos textos algumas questões e posicionamentos que compõem o campo de reflexões dos filósofos e historiadores da ciência contemporâneos. As discussões realizadas são seguidas pela sugestão de uma estratégia geral para o uso dos artigos em sala de aula, de forma a otimizar o aproveitamento do conteúdo científico e epistemológico de ambos.
Nanofiltration performance of lead solutions: effects of solution pH and ionic strength
Authors: Saikaew Wuthikorn , Mattaraj Supatpong , Jiraratananon Ratana
Published: May 2010

Nanofiltration performance (i.e. rejection and flux decline) of lead solutions was investigated using a dead-end test cell at room temperature. An aromatic polyamide NF-90 membrane was chosen to determine the impacts of solution chemistry. The experimental results revealed that solution flux decline was dependent on solution pH, ionic strength, and type of lead solutions. Solution flux conducted with different types of lead solutions (i.e. PbCl2 and Pb(NO3)2) decreased with increased solution pH. Solutions having high pH exhibited greater flux decline than those having low solution pH, while lead ion rejections were relatively high. Increased ionic strengths resulted in a greater flux decline, while lead ion rejections decreased with decreasing solution pH and increasing ionic strengths. Such results were related to low solution pH, suggesting an increase in fixed charge of proton (H+), decreasing electrical double layer thickness within membrane, thus allowing increased lead concentration passing through the membrane surface. Solution flux and rejection decreased further at higher ionic strengths, which caused a reduced negatively charged membrane, and thus decreased rejections. It was also found that lead ion for PbCl2 solution exhibited higher rejections than that of Pb(NO3)2 solution.
Decision support for the planning of integrated wastewater reuse projects in South Africa
Authors: Adewumi J. R. , Ilemobade A. A. , van Zyl J. E.
Published: May 2010

Wastewater reuse is an attractive option for supplementing available water supplies. Benefits of reuse include pollution abatement due to the reduction of effluent discharge to surface water bodies, the decrease in the use of freshwaters from sensitive ecosystems, replenishment of soil nutrients in agriculture, enhancement of groundwater recharge and delay in the future expansion of water supply infrastructure. This paper presents ongoing research in developing and testing of a decision support system (DSS) for assessing the feasibility of implementing wastewater reuse projects in South Africa. The DSS employs multi-criteria qualitative assessment across technical, environmental, social, institution and water resources. The database of the DSS contains 33 wastewater treatment unit processes with known information on performance, costs and qualitative criteria obtained from literature. The knowledge base on the other hand, consists of a set of rules for combining the treatment units to form treatment trains and contains information on maximum allowable values for different water quality parameters for five end users. The weighted average method was used to aggregate scores obtained from the assessment of the different criteria to generate an indicative value that could form the basis for decision making. Testing of the DSS was applied to the Parow wastewater treatment plant in Cape Town. Results of the analysis shows that only the water resources evaluation score (1.0) is considered excellent for reuse implementation while the institutional evaluation score is weak (0.35) in guaranteeing success. Social evaluation and treatment train technical/environmental have qualitative evaluation scores of 0.76. The desirable score for all the criteria is 1.0 in order to facilitate the successful implementation of any reuse project. The quality of treated effluent from the proposed treatment trains meets the quality requirement in most of the pollutant determined except total phosphorus (2.88). The value is acceptable if the use of the effluent is limited to irrigation. If decision makers give adequate attention to the criteria highlighted in this model, success of a reuse project in South Africa can be better enhanced.
Control-design methodology for drinking-water treatment processes
Authors: van Schagen Kim , Rietveld Luuk , Veersma Alex , Babuška Robert
Published: May 2010

The performance of a drinking-water treatment plant is determined by the control of the plant. To design the appropriate control system, a control-design methodology of five design steps is proposed, which takes the treatment process characteristics into account. For each design step, the necessary actions are defined. Using the methodology for the pellet-softening treatment step, a new control scheme for the pellet-softening treatment step has been designed and implemented in the full-scale plant. The implementation resulted in a chemical usage reduction of 15% and reduction in the maintenance effort for this treatment step. Corrective actions of operators are no longer necessary.
Neonatal outcome following exposure to organophosphorous pesticides
Authors: Djordjevic M. , Vujic Ana , Jovanovic B. , Djordjevic Gordana , Sazdanovic Maja , Sazdanovic P.
Published: May 2010

The aim of our study was to determine the neonatal outcome in mothers and children exposed to organophosphorous pesticides (OP). We found that 22.4% pregnant women were exposed to organophosphorous pesticides. OP pesticide concentration was higher in breast milk, newborn sera than maternal sera. Newborn parameters such as birth weight, birth length, head circumference, Apgar score and presence of meconium, as well as gestational age of delivery, showed no significant difference between the two groups. However, postpartum weight loss, hospitalization duration, levels of newborn bilirubin and glycaemia differed significantly between the two groups. Morbidity and presence of CNS disorders were six times and more than twelve times higher, respectively, in the OP-exposed than in the OP pesticide non-exposed group.
Spectral changes of brain activity in rat offspring exposed to aluminium during gestation and lactation
Authors: Martac L. , Grbic G. , Kekovic G. , Podgorac J. , Culic M. , Sekulic S. , Lalosevic D. , Capo I.
Published: May 2010

Exposure to aluminium during gestation causes changes in mammalian brain development and behavior. Our aim was to perform spectral analysis on electrocortical activity of Sprague Dawley male pups (30?3 days of age) whose mothers were treated with aluminium during gestation and lactation. There was a higher presence of power spectra in the delta range of parietal electrocortical activity, a lower presence in the theta range and increased values of the parameter DT as the ratio of delta to theta range in pups indirectly exposed to aluminium (whose mothers were drinking a 0.5% water solution of aluminium chloride during the gestation and lactation periods), compared to controls.
Experimental Trichinellosis in rats: Peritoneal macrophage activity
Authors: Gruden-Movsesijan Alisa , Sofronic-Milosavljevic Ljiljana
Published: May 2010

The influence of Trichinella spiralis infection on macrophage activity in rats during the first 28 days of infection was examined by measuring the production of NO and IL-6, as well as the expression of mannose receptor on the surface of peritoneal macrophages. During the course of a dynamic shift in the 3 life-cycle stages of the parasite, intermittent variations in NO production were observed but ended with increased values that coincided with the highest values for IL-6 release in the final, muscle phase of infection. No change in mannose receptor expression was observed during the course of infection. These results confirm that the Trichinella spiralis infection provokes changes in macrophage activity that could influence not only the course of the parasitic disease but also the overall immune status of the host.
The influence of increased rearing density on medial protocerebral neurosecretory neurons of Lymantria dispar L. caterpillars
Authors: Ilijin Larisa , Peric-Mataruga Vesna , Radojicic R. , Vlahovic Milena , Mrdakovic Marija , Mircic D. , Lazarevic Jelica
Published: May 2010

Morphometric changes of A1, A1' and A2 protocerebral dorsomedial neurosecretory neurons, total brain protein content and brain protein profiles were analyzed in 4th instar Lymantria dispar larvae under elevated rearing density, i.e. under intense stress when 5 larvae were kept in a petri dish (V = 80 ml), less intense stress when 5 larvae were kept in a plastic cup (V = 300 ml). In the control samples the larvae were reared in isolated conditions. Protein pattern changes in the brain were observed. Proteins with the following molecular masses: 30, 14, 10 and 3.4-2.5 kD were detected in the experimental groups. The size and cytological characteristics of protocerebral dorsomedial neurosecretory neurons were changed under elevated rearing density.
Mitotic activity of smooth muscle cells of the myoma: Does hormonal stimulation have an effect on the number of mitoses?
Authors: Kastratovic Tatjana , Tanaskovic Irena , Lackovic Vesna , Sorak Marija , Stankovic Vesna , Ljujic Biljana , Sedlar S. , Zivanovic A.
Published: May 2010

Myomas develop as a result of increased mitotic (proliferating) activity of smooth muscle cells. In this study we examined the pathohistological samples of 176 myomas and their endometria that were obtained after hysterectomy from patients in the proliferative (follicular) and secretory (luteal) phase of the menstrual cycle. We examined the mitotic activity of the myoma cells in both phases and established that the average number of mitoses in the proliferative phase was significantly larger compared to the secretory phase, and that in the proliferative phase of the cycle there exists a statistically significant convergent association of the number of mitoses in the endometrium and in myomas. The number of endometrial mitoses is significantly larger than in myomas in both phases of the cycle.
Transient expression in tobacco Bright Yellow 2 cells and pollen grains: A fast, efficient and reliable system for functional promoter analysis of plant genes
Authors: Bratic Ana , Majic Dragana , Samardzic Jelena , Kragl M.W. , Maksimovic Vesna
Published: May 2010

Gene expression is mediated by DNA sequences directly upstream from the coding sequences, recruited transcription factors and RNA polymerase in a spatially-defined manner. Understanding promoter strength and regulation would enhance our understanding of gene expression. The goal of this study was to develop a fast, efficient and reliable method for testing basal promoter activity and identifying core sequences within its pollen specific elements. In this paper we examined the functionality of buckwheat metallothionein promoter by a histochemical GUS assay in two transient expression systems: BY2 cells and pollen grains. Strong promoter activity was observed in both systems.
The effect of paclitaxel alone and in combination with cycloheximide on the frequency of premature centromere division in vitro
Authors: Bajic V. , Stanimirovic Z. , Stevanovic Jevrosima , Milicevic Zorka , Zivkovic Lada , Spremo-Potparevic Biljana
Published: May 2010

Premature centromere division (PCD) can be viewed as a manifestation of chromosome instability. In order to evaluate the ability of Paclitaxel (Ptx) and Cycloheximide (Cy) to induce PCD we used a cytokinesis block micronucleus assay (CBMN), fluorescent in situ hybridization (FISH), and the chromosome aberration (CA) assay in human peripheral blood lymphocytes. Results showed that Ptx can induce PCD alone or in combination with Cy. These findings call us to pay more attention to PCD as a parameter of genotoxicity in the pre-clinical research of mono and/or combinational therapies for cancer treatment.
Superoxide dismutase and catalase activities in the liver and muscle of barbel (Barbus barbus) and its intestinal parasite (Pomphoryinchus laevis) from the Danube river, Serbia
Authors: Radovanovic Tijana , Borkovic-Mitic Slavica , Perendija Branka , Despotovic Svetlana , Pavlovic S.Z. , Cakic P.D. , Saicic Zorica
Published: May 2010

The activities of total superoxide dismutase (Tot-SOD), manganese-containing superoxide dismutase (Mn-SOD), copper zinc containing superoxide dismutase (Cu/Zn-SOD) and catalase (CAT) protein concentration, as well as protein and SOD electrophoretic profiles in the liver and muscle of barbel (Barbus barbus) and its intestinal parasite Pomphoryinchus laevis from the river Danube, within the suburban area of Belgrade, Serbia (the stretch between Visnjica and Grocka) in spring and summer were investigated. Specific activities of Tot-SOD, Mn-SOD, Cu/Zn-SOD were higher in spring, while specific CAT activity was higher in summer in all investigated samples. Temperature influence on the antioxidant defense enzymes in barbel tissue and in its intestinal parasite Pomphoryinchus laevis, as well as seasonal patterns, are evident. Our work represents the first study of SOD and CAT activities in the barbel and its intestinal parasites and shows that barbel and acanthocephalans are very useful for biomonitoring studies in aquatic ecosystems.
Mullet fry (Mugilidae) in coastal waters of Montenegro, their spatial distribution and migration phenology
Authors: Mickovic B. , Nikcevic M. , Hegedis A. , Regner S. , Gacic Z. , Krpo-Cetkovic Jasmina
Published: May 2010

Three localities, representing three distinct coastal areas, were investigated: 1. the mouth of the Sutorina River; 2. the mouth of the Jaska River; 3. the mouth of the Bojana River (right branch). Regarding the composition of young mullet assemblages, Lisa saliens, Lisa ramada and Lisa aurata were dominant at the first locality; L. aurata and Chelon labrosus at the second; and at the third L. ramada was clearly dominant, Mugil cephalus occupied the subdominant position, while L. aurata was absent. The seasons of the first appearance of migratory fry were October, April, November, October and July, for M. cephalus, C. labrosus, L. ramada, L. aurata and L. saliens, respectively. Migratory periods varied from 2 (C. labrosus) to 7 (L. ramada) months.
Nitrogen transformation in acid soils subjected to pH value changes
Authors: Kresovic Mirjana , Jakovljevic M. , Blagojevic S. , Zarkovic Branka
Published: May 2010

The aim of this investigation was to determine which application of fertilizer and lime material does not form toxic quantities of nitrite nitrogen and when the losses by denitrification are the lowest in the examined acid soils. Investigations were performed on pseudogley soils of different acidity. Changes of available nitrogen forms were examined by the method of short-term incubation experiments. Experimental treatments were without the use of mineral fertilizers and with application of (NH4)2SO4 (100 ppm of NO3-N) and KNO3 (100 ppm of NO3-N); with and without addition of Ca(OH)2 (50% of full neutralization and full neutralization). When (NH4)2SO4 was used, nitrites occurred in both examined soils as a result of decelerated nitrification and when KNO3 was added as a result of chemical denitrification. Application of Ca(OH)2 caused the intensification of mineralization, nitrification and biological denitrification processes. When a higher dose of lime material was used (full neutralization), nitrites occurred in larger quantities as a result of the strengthening of nitrification and denitrification processes. Application of a lower lime dose caused nitrite occurrence in smaller quantities. Therefore, in these soils as well as in soils of similar chemical properties, application of lower doses of lime material can be recommended (<50% of full neutralization) as well as the application of ammonium fertilizer, bearing in mind that in such conditions losses of added fertilizer in the denitrification process are reduced and the occurrence of nitrites as an intermediate product of this process is prevented.
Seed-specific aspartic proteinase FeAP12 from buckwheat (Fagopyrum esculentum Moench)
Authors: Timotijevic Gordana , Milisavljevic Mira , Radovic Svetlana , Konstantinovic M.M. , Maksimovic Vesna
Published: May 2010

Aspartic proteinase gene (FeAP12) has been isolated from the cDNA library of developing buckwheat seeds. Analysis of its deduced amino acid sequence showed that it resembled the structure and shared high homology with typical plant aspartic proteinases (AP) characterized by the presence of a plant-specific insert (PSI), unique among APs. It was shown that FeAP12 mRNA was not present in the leaves, roots, steam and flowers, but was seed-specifically expressed. Moreover, the highest levels of FeAP12 expression were observed in the early stages of seed development, therefore suggesting its potential role in nucellar degradation.
Life tables and reproductive parameters of Phlebotomus neglectus tonnoir, 1921 (Diptera, Psychodidae) under laboratory conditions
Authors: Ivovic V. , Chaniotis V. , Vujanic Marija , Bobic B. , Nikolic Aleksandra , Klun Ivana , Zivkovic Tijana , Djurkovic-Djakovic Olgica
Published: May 2010

Laboratory investigations of the biology of the sand fly, Phlebotomus neglectus, including bionomic factors collected on the life history, behavior and feeding preferences of this species and the characteristics of its developmental biology are presented. In addition, we quantified the parameters of the population dynamics and life history of this species under laboratory conditions which are crucial for a better understanding of its role as a vector of Leishmania parasites in the eastern Mediterranean area.
In vitro synergistic antibacterial activity of Salvia officinalis L. and some preservatives
Authors: Stanojevic Dragana , Comic Ljiljana , Stefanovic Olgica , Solujic-Sukdolak Slavica
Published: May 2010

The aim of this work was to investigate the antibacterial activity of aqueous extracts of the species Salvia officinalis L. and its synergistic action with the preservatives sodium nitrite, sodium benzoate and potassium sorbate in vitro against selected food spoiling bacteria. Synergism was assessed by the checkerboard assay method and quantitatively represented by the FIC index. Synergistic action was established for aqueous extract/sodium benzoate, aqueous extract/potassium sorbate, aqueous extract/sodium nitrite combinations. Synergism was detected in relation to: Agrobacterium tumefaciens, Bacillus subtilis and Proteus sp. Synergism was established at plant extract and preservative concentrations corresponding up to 1/8 MIC values.

Detected autoplagiarism. Link to the Editorial Decision 10.2298/ABS1004251U
Evaluation of the INTERCOM model for predicting growth of forest herbs
Authors: Popovic Zorica , Lindquist J.L.
Published: May 2010

The ecophysiological model INTERCOM was evaluated for its suitability in predicting the growth of perennial forest herbs. A field experiment was conducted to obtain data on photosynthesis and growth parameters of two spring flowering understorey geophytes. Results were used to parameterize the model and its performance was evaluated using the average normalized difference (AE) between predicted and observed biomass and the leaf area index. The model was assumed to provide accurate simulations if the AE was smaller than 0.4. Adjusting the photosynthetic intensity parameters in the model to reflect observed changes in photosynthesis throughout the growing period resulted in the accurate prediction of Scilla bifolia and Arum maculatum biomass (AE=0.13 and AE=0.021, respectively) and LAI (AE=-0.16 and AE=-0.08, respectively). Ecophysiological models may be useful tools for predicting the biomass accumulation of forest understorey species in response to varying environmental conditions, which could be useful for monitoring forest ecosystem health.
Neobisium deltshevi (Neobisiidae, Pseudoscorpiones), a new endemic cave-dwelling pseudoscorpion from East Serbia
Authors: Curcic B.P.M. , Dimitrijevic R.N. , Curcic Nina
Published: May 2010

A new endemic cave-dwelling pseudoscorpion species from the Seselacka Pecina Cave, village Seselac, nr. Soko Banja, East Serbia is presented, described and illustrated. Its main morphometric characteristics and important diagnostic features are analyzed and compared to those of its closest congener Neobisium carpaticum (Beier, 1930) from Serbia.
Vladimir C. Trifunovic: Whole life time dedicated to maize
Authors: Konstantinov Kosana
Published: May 2010

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Gene discovery for improvement of kernel quality-related traits in maize
Authors: Motto M. , Balconi C. , Hartings H. , Rossi V.
Published: May 2010

Developing maize plants with improved kernel quality traits involves the ability to use existing genetic variation and to identify and manipulate commercially important genes. This will open avenues for designing novel variation in grain composition and will provide the basis for the development of the next generation of specialty maize. This paper provides an overview of current knowledge on the identification and exploitation of genes affecting the composition, development, and structure of the maize kernel with particular emphasis on pathways relevant to endosperm growth and development, differentiation of starch-filled cells, and biosynthesis of starches, storage proteins, lipids, and carotenoids. The potential that the new technologies of cell and molecular biology will provide for the creation of new variation in the future are also indicated and discussed.
Genetic variability as background for the achievements and prospects of the maize utilisation development
Authors: Radosavljevic Milica , Bekric Vitomir , Milasinovic Marija , Pajic Zorica , Filipovic Milomir , Todorovic Goran
Published: May 2010

Maize is one of the most important crops, and as such, one of the most significant naturally renewable carbohydrate raw materials of energy and numerous very different products. The dominance and superiority of maize are primarily caused by the extremely wide, very diversified and enormous possibilities of its utilisation. Previous accomplishments are presented and prospective developments of the maize chemistry and technology, i.e. maize utilisation in our country and worldwide were discussed in the present study. The objective of this study was to advert to this section of science that is full of real and great challenges. Changes in the maize production and utilisation are described. Some very important questions were asked, such as: what is it that makes maize such a valuable, naturally renewable raw material, how and why do we sow maize and harvest energy and products?.
Stability parameters for grain yield of maize hybrids (Zea mays L.)
Authors: Madic Milomirka , Djurovic Dragan , Stevovic Vladeta , Bokan Nikola
Published: May 2010

Stability parameters for grain yield were evaluated in 11 maize hybrids of FAO 300-700 maturity groups (ZPSC 330M, ZPTC 404, ZPSC 42A, ZPSC 480, ZPSC 539, ZPSC 599, ZPSC 580, ZPSC 677, ZPSC 633, ZPSC 704 and ZPSC 753) at three different locations in Central Serbia over a two-year period. The hybrids were tested in two separate trials including 50,000 and 65,000 plants/ha, respectively. The stability parameters were estimated using the EBERHART and RUSSELL regression model (1966). There were no significant differences (except in the ZPTC 404 hybrid) between the values of the regression coefficient (bi) for grain yield and the mean value. The ZPSC 599 hybrid of the group of hybrids with a medium growing season gave high yields and less favorable values of stability parameters at most locations and over most years as compared to the long- season hybrids. The late maturity hybrids (FAO 600 and 700) as compared to the early maturity ones generally exhibited unfavorable values of stability parameters, i.e. a specific response and better adaptation to more favorable environmental conditions, and produced higher average yields. The yield of these hybrids could not have been jeopardized by the yield of the early maturity hybrids.
Studies on maize inbred lines susceptibility to herbicides
Authors: Stefanovic Lidija , Simic Milena , Dragicevic Vesna
Published: May 2010

This paper presents the analysis of results obtained during long- term studies on the response of maize inbred lines to herbicides. Under the agroecological conditions of Zemun Polje the response (reaction of maize inbred lines to herbicides of different classes was investigated. Biological tests were performed and some agronomic, morphological, physiological and biochemical parameters were determined when the response of maize inbred lines to herbicides was estimated. The use of active ingredients of herbicides from triazine, acetanilide, thiocarbamate to new chemical groups (sulfonylurea etc.), have been resulted in changes in weed suppression and susceptibility of inbred lines. Obtained results show that effects of herbicides on susceptible maize genotypes can be different: they can slowdown the growth and development and affect the plant height; they can also affect the stages of the tassel and ear development and at the end they can reduced grain yield of the tested inbreds. Numerous studies confirmed the existence of differences in susceptibility level of maize genotypes in relation to herbicides. According to gained results the recommendations for growers are made on the possibility of the application of new herbicides in the hybrid seed production.
Mode of inheritance and combining abilities for kernel row number, kernel number per row and grain yield in maize (Zea mays L.)
Authors: Bocanski Jan , Sreckov Zorana , Nastasic Aleksandra , Ivanovic Mile , Djalovic Ivica , Vukosavljev Mirjana
Published: May 2010

Utilization of heterosis requires the study of combining abilities of potential parents. In view of this, the objective of this paper was to study combining abilities and determine the mode of inheritance and gene effects for the main agronomic character, grain yield, and its components, kernel row number and kernel number per row. Six inbred lines were used in the study, three of which originated in the U.S., while the other three were developed at the Institute of Field and Vegetable Crops in Novi Sad. Kernel row number was inherited by superdominance, partial dominance, complete dominance and intermediacy. The mode of inheritance of kernel number per row and grain yield was superdominance. Additive gene action had the greatest influence on the expression of kernel row number, while the other two traits were influenced the most by nonadditive gene.
From genetics to genomics in plants and animals
Authors: Todorovska Elena , Atanassov Atanas , Vassilev Dimitar
Published: May 2010

The classical concepts in plant and livestock selection for economically important quantitative traits traditionally are based on phenotypic records, aiming at improvement of the traits by obtaining better genetic gain. The increase in genetic variation together with shortening of the generation interval is the major target of long term improvement of methods and tools for selection activities. The discoveries and implementations of biotechnology and molecular biology for selection purposes provide a stable background for generating of new knowledge and practical use in agricultural research and practice as well as to meet the growing demand for more and with better quality food and feed. The innovations in molecular knowledge related to practical selection aside with the quick quantification in breeding schemes allowed to reconsider the opportunities for sustainable development of selection methods for improvement of the traits of interest in agriculture, the quick invention and practical application of new high-throughput technologies for studying of the genomic variation, evolution, translation of proteins and metabolite determination altogether put in an open and communicative environment of information technologies provide a new holistic platform for better research and more knowledge for practical application of selection decisions.
New elements of the painted program in the narthex at Nerezi
Authors: Bardzieva-Trajkovska Donka
Published: May 2010

The fresco paintings in the narthex of the St. Panteleimon church in Nerezi are only partly preserved, and by their thematic character, they can be divided into 3 groups: the first group consists of fragments of the Life cycle of St. Panteleimon, the second group consists of remnants of the Deesis composition painted over the entrance to the naos. The third group consists of fragments of the scenes in the first zone on the north end of the east wall, as well as the fragment of the imperial scene, which can be linked with the donor composition which was painted in the second zone on the north end of the east wall.
Representation of the Five Martyrs of Sebaste in the Church of Saint Stephen at Konce
Authors: Gabelic Smiljka
Published: May 2010

The identification was carried out in this article o the significantly damaged figures of the saints, depicted in the second zone of the eastern pillars in the Church of Saint Stephen at Konce (before 1366), using a large number o analogous examples. The meaning of this group of martyrs was interpreted as funerary, on the basis of the corresponding notion about the representation of the Holy Martyrs and the location of their figures in certain monuments...
Newly discovered fragments of frescoes in the Church of Saint Ana above Perast, the Boka Kotorska bay
Authors: Djordjevic Ivan
Published: May 2010

Several years ago, during the reconstruction and refurbishment of the Church of Saint Ana above Perast, the original layer of frescoes was discovered in this church, which is otherwise known for the wall paintings by Tripo Kokolja (beginning of the XVIII century). Since this church is also known as indicated in the paper, by the name of Saint Veneranda, or Saint Paraskevi, the point that was discussed first of all, was the change in the dedication of the church. On the basis of an analysis of the architecture it was argued that this was one of the oldest shrines in Perast, dating from the mid-XV century. Fragments of frescoes were then analysed, which made it possible to conclude beyond a doubt that Saint Paraskevi was painted on the triumphal arch, on the southern side, and above her, the Crucifixion. The placement of this scene in the main place in the temple resulted from the fact that the Church of Saint Ana was located at the end of the Way of the Cross (Via Crucis), in Perast. All this indicates that the educated population of Perast knew exactly how to create the sacral topography of a town. Finally, it seems that the paper proves, persuasively enough, that the wall paintings in Saint Ana are the work of Lovro Marinov Dobricevic, a painter of Kotor and Dubrovnik from the middle and the latter half of the XV century.
The expression of the imperial idea of a Romanian ruler in the katholikon of the Great Lavra monastery
Authors: Dionysopoulos Nikos
Published: May 2010

The subject of this paper is a recently cleaned fresco displaying a donor portrait in the katholikon of the Great Lavra monastery on Mount Athos known as the portrait of the Byzantine Emperor John Tzimiskes. The author taking into consideration several iconographic elements as well as the new data that came to light in the course of restoration, rejects the possibility of the representation of the Byzantine emperor and identifies the painted image with Wallachian Prince Vlad Vintil? (1532-1535). This is the most representative example of a Romanian ruler portrayed in fresco that excellently reflects the imperial idea.
When Job falls ill: Literary and iconographical study of a biblical scene from the Septuagint
Authors: Devoge Jeanne
Published: May 2010

The particular scene from the Book of Job where Job falls ill, struck down by Satan (Job, II, 1-8), is studied from the link between the Septuagint text and the images that illustrate it. The text, transcribed and translated reveals the vocabulary of the body and the disease of Job, supported by the comments of the Greek Fathers that surround it. Compared with the description of some images issued from the iconographical cycles created especially for the Byzantine Books of Job, the text appears clear and concise. Thus, the text offered large scope for interpretation to the manuscript's painters: the numerous variants of the scene where Job falls ill indicate this.
From the painted programme of Saint John (Ayvali Kilise), Cssappadocia
Authors: Gabelic Smiljka
Published: May 2010

In the Church of St. John in Cappadocia, also known as Ayvali Kilise or Gulu dere 4, on the frescoes which were painted between 913 and 920, particular devotion was shown for the cult of the archangels. The two archangels Michael and Gabriel, were painted in very large dimensions, with inscriptions describing them as 'great', besides giving their names. In addition to that a unique group of two figures was presented. It depicted the monk Archippos turned toward a colossal figure of the archangel Michael, painted strictly frontally. The iconographical relationship of these two figures, unrecorded in scholarly literature, indicates that this was definitely Archippos, the custodian of the important shrine of the Archangel Michael at Chonai, which still existed in those times. This would not only be a very early, but the only preserved presentation of Archippos, other than his appearance in the well-known composition of the Miracle of the Archangel Michael at Chonai.