bluuebunny/crossref_metadata_2025 huggingface dataset:
Perfil Clínico de Apego (PCA): Elaboración de un sistema de categorías para la evaluación del apego
Authors: Lucena Glòria , Cifre Ignacio , Castillo Garayoa José Antonio , Aragonés Elena
Published: March 2021

A partir de la teoría de Bowlby y de los estilos de apego propuestos por Bartholomew y Horowitz, se desarrolla el Perfil Clínico de Apego-narrativas (PCA-n), un sistema de observación para evaluar el apego a partir de las narrativas de los y las pacientes. En el Estudio 1, se construye una primera versión del instrumento (PCAv1). La consistencia interna resulta adecuada en la evaluación del apego seguro y evitativo, pero insuficiente en el caso del apego preocupado y temeroso. En el Estudio 2 se introducen cambios en el instrumento (PCA-n), que finalmente consta de cuatro categorías: disponibilidad-confianza, autonomía en la relación, regulación de las emociones y revelación de las emociones. Aplicado a las narrativas de dos pacientes, se obtiene un nivel de acuerdo entre evaluadores en la identificación de las narrativas significativas superior al 75%. También resulta adecuada la fiabilidad del PCA-n, ya que la correlación promedio en la identificación de las categorías fue .78 en el caso del paciente 1, y .88 en el paciente 2.Se discuten las aplicaciones posibles del PCA-n, sus ventajas y limitaciones, así como líneas de investigación futuras.
Nuevas tecnologías - ¿Nuevas patologías? El Smartphone y el fear of missing out
Authors: Gil Frederic , Oberst Ursula , Del Valle Georgina , Chamarro Andrés
Published: March 2021

En el contexto de las investigaciones sobre el uso intensivo y/o maladaptativo del teléfono móvil y de las redes sociales en línea se han ido describiendo nuevos fenómenos que pueden ser asociados a un malestar psicológico importante. El fear of missing out o FoMO (miedo a perderse algo) es un nuevo constructo psicológico que se ha descrito como la sensación de malestar al saber que otras personas están realizando actividades agradables y que uno no es parte de ello. El presente estudio investiga la relación entre el grado de FoMO experimentado, los indicadores de uso problemático del teléfono móvil y los indicadores de malestar psicológico. Mediante un análisis de regresión lineal jerárquico se encontró que tanto la conducta adictiva en torno al teléfono móvil como el FoMO son importantes predictores de síntomas psicopatológicos, especialmente, de ansiedad. El fear of missing out se perfila como un correlato importante del uso desadaptativo del smartphone y de las redes sociales en línea.
El compromís per a la renovació pedagògica
Authors: Esteve Ràfols M. del Mar
Published: March 2021

L’article planteja una reflexió crítica sobre el concepte i la pràctica de la innovació educativa. En primer lloc, s’analitzen els termes innovació i renovació i s’intenta explicar què signifiquen per aprofundir en el sentit i l’abast dels canvis en educació. En segon lloc, es proposen un conjunt d’actituds –a manera de marc– que haurien de ser presents en el discerniment entre la renovació i la innovació educativa. Per això, el text no entra en la qüestió de què cal transformar a l’escola i en l’educació i com cal fer-ho –tot i que aposta clarament per aquesta desitjada i necessària transformació–, sinó que aborda qüestions prèvies d’orientació i de finalitat del canvi.
High speed cameras in sport and exercise. Practical applications in sports training and performance analysis
Authors: Buscà Safont-Tria Bernat , Quintana Recasens Marc , Padullés Rius Josep Maria
Published: March 2021

Technological advances applied to the world of sport have improved the experience of participants, coaches and spectators. The high-speed cameras and the video in slow motion allowed studying and improve learning processes and performance in sports, analyzing the movement and evaluating several factors in these processes. Thus, these cameras have helped to improve feedback supply to the training and learning sessions. Moreover, it constitute a valuable tool for both researchers and coaches to assess performance and measure the duration of events, velocities, accelerations and forces that are generated in human movement. This article aims to improve the knowledge of the reader in this area. It analyzes the various tools on the market, as well as smart mobile phones and applications based on the use of the camera, high-speed in lots of cases. It also refers to software used for movement analysis. The article seeks to highlight recent research that used this technology and suggest affordable and valuable practical applications for improving training and teaching processes in the modern sport.
Xarxes, accelerometria i anticipació en l'esport dins l'entorn lliure Chronojump
Authors: De Blas Foix Xavier , Carreras Godall Jordi , Suárez Rodríguez Ferran , Padullés Chando Xavier , Hernández Carrère Francesc
Published: March 2021

Es presenten tres aportacions en tecnologia esportiva lliure vinculades al projecte Chronojump realitzades en col·laboració amb alumnes de Blanquerna CAFE. En primer lloc s'exposa un entorn centralitzat de dades de diferents estacions de treball a gimnasos/clubs. Un procés de revisió, entrevistes a experts i proves, porta al desenvolupament d'un servidor propi, l'ús de mini ordinadors Raspberry Pi, el protocol RDP i el lector NFC NC522. La segona part del treball implementa els quaternions per l'accelerometria triaxial. Després de la programació del dispositiu es realitza una prova ideal i una manual, obtenint resultats perfectes en el primer cas, però força erronis en el segon cas degut a la impuresa del moviment humà. Finalment es dissenya una placa i tres perifèrics per la mesura del temps de reacció electiu, l'anticipació i el flicker. Els dispositius, programari i firmware es finalitzen a l'espera d'una producció industrial. Es realitzen proves de la velocitat del moviment d'anticipació amb errades sistemàtiques al voltant del 0.03%, i també es fan proves amb mostra de 10 subjectes comparant estímuls visual, auditiu i electiu, trobant diferències significatives entre qualsevol dels grups. Les tres aportacions són públiques per facilitar la recerca en les ciències de l'esport.
Character strengths in Spanish music students: An exploratory study / Fortaleses de caràcter en els estudiants de música espanyols: un estudi exploratori
Authors: Calderón-Garrido Diego , Gustems-Carnicer Josep , Calderon Caterina , Martín-Piñol Carolina
Published: March 2021

Summary. The factors in the choice of musical instruments and how it influences and modifies the personality of the musicians are a common theme in research. However, less attention has been given to the formative effect of music on the character of music students, whose long-term commitment to acquiring professional competences as performers, teachers, conductors or composers can be examined using the research on Positive Psychology, which is mainly concerned with furthering people’s psychological wellbeing. This paper profiles the virtues and character strengths of a sample of eighty Spanish students completing bachelor’s degrees in music during the academic year 2016-2017, using the VIA Inventory of Strengths –free version (VIA-IS) (Peterson & Seligman, 2004) to analyse the respondents’ key strengths. The survey showed high scores in judgment and lower scores in self-regulation. The results were contrasted with samples of students in bachelor’s degrees in the social sciences.Resum. Els factors que contribueixen a l’elecció dels instruments musicals i la seva influència i modificació en la personalitat dels músics són un tema comú en la recerca. Tanmateix, s’ha posat menys atenció a en aspectes com l’efecte formatiu de la música en el caràcter dels estudiants de música; el compromís d’aquestes persones amb l’adquisició de competències professionals a llarg termina com a intèrprets, professors, directors o compositors pot ser examinat aplicant la Psicologia Positiva, que s’ocupa principalment del benestar psicològic de les persones. Aquest article estudia les virtuts i les fortaleses del caràcter d’una mostra de vuitanta estudiants espanyols cursant el grau en música durant el curs 2016-2017 amb el VIA Inventory of Strengths – versió lliure (VIA-IS; Peterson & Seligman, 2004) per analitzar les fortaleses clau dels enquestats. Els resultats van mostrar puntuacions altes en judici i menors en auto-regulació. Els resultats es contrasten amb mostres d’estudiants de grau en ciències socials.
The impact of the flipped classroom in higher education: a case study
Authors: Sosa Díaz María José , Narciso Dolores
Published: March 2021

Some of the new teaching models that have emerged, including the Flipped Classroom, can be key to reversing traditional educational practices. However, it is necessary to analyse in detail how these educational experiences are being implemented in the classroom, and how this is affecting students' learning. The present research uses a case study methodology. The objective is to analyse a higher education course taught using flipped classroom methodology and to assess the impact of the implementation of said pedagogical model on the students’ formative process. The study used a data collection instrument based on a structured interview and a data analysis strategy based on the Grounded Theory. In general, the results show that students tend to express positive opinions and a good degree of satisfaction with their experiences with this pedagogical method. Most students confirm that the method successfully stimulates cooperative learning and favours the practical acquisition of knowledge, stimulating in turn the development of a series of key competences in the educational process, along with capabilities such as organisation, autonomy and responsibility, among others.
Escaping from the English classroom. Who will get out first?
Authors: Santamaría Urbieta Alexandra , Alcalde Peñalver Elena
Published: March 2021

The aim of this study is to present an innovative teaching proposal implemented in the English classroom in a Translation Degree that can be replicated in other disciplines, and to analyse the potential for an activity like this one to have a very positive effect on the way students engage with and learn a second language. The study was based on the hypothesis that the use of an escape room, chosen here from a range of possible gamified activities, could enhance students’ motivation to learn a second language and serve as an enjoyable and cooperative way to help them develop oral and writing skills. This paper opens with a review of relevant research in the field of English language learning and analyses the potential benefits of introducing gamification techniques to the classroom. The next section details the method used in the study, including information about the instrument, the participants and the academic context. The activity implemented is also described. After that, the results of the study are presented and illustrated with examples from the data. Finally, some implications of the study are discussed.
Video game industry versus Internet Gaming Disorder: ‘The match of the century’
Authors: Cabonell-Sánchez Xavier
Published: March 2021

This article consists of a reflection on the clash between the interests of the video gaming industry and the health of consumers as defined by the World Health Organization and the American Psychiatric Association. The article discusses the history of the self-regulation of the tobacco, alcohol and gambling industries, then goes on to discuss the extent to which video games may gain establishment acceptance as sports, much as bridge and chess did before them. The article concludes that the category of sport can serve as a mediating force between the industry and the health of gamers.
What do pre-service teachers know about computational thinking?
Authors: Peracaula-Bosch Marta , Estebanell-Minguell Meritxell , Couso Digna , González-Martínez Juan
Published: March 2021

In recent years, interest in Computational Thinking (CT), which is seen as a transversal competence that is necessary in the Knowledge Society, has spread to educational systems around the world. In this context, it has become necessary for training programmes for pre-service teachers to address this topic. In this article, we explore the knowledge, attitudes and expectations regarding CT held by pre-service teachers, prior to receiving training on this field. We use a descriptive analysis of both qualitative and quantitative data obtained via an ad hoc questionnaire, whereby 193 pre-service teachers at the University of Girona were asked about different aspects related to CT. The study shows that the majority of pre-service teachers cannot correctly identify most indicators associated to CT, and that most of them are unaware of the implications of the promotion of CT in terms of developed skills or areas of application. However, their expectations regarding their learning process with regard to this topic are positive. Therefore, it is necessary to more thoroughly define theoretical foundations of the concept in order to take steps to effectively include it in teacher training programmes.
The relationship between subjective happiness and social media usage during the COVID-19 pandemic: the moderating role of resilience
Authors: Khodabakhsh Sonia , Ahmadi Somaye
Published: March 2021

The COVID-19 pandemic has had an impact on individuals’ mental health. Individuals have tended to obtain information about the pandemic from social media. With the aim of exploring the relationship between subjective happiness and social media usage during the COVID-19 pandemic and the possible moderating role of resilience in this relationship, we asked 277 young adults in Iran to complete a number of online questionnaires, including a demographic questionnaire, a survey on social media usage, a subjective happiness scale and a brief resilience scale. The results showed that there is a significant negative correlation between social media usage and subjective happiness. In terms of the different degrees to which resilience can act as a moderator, our findings showed that when resilience is average or high, the relationship between social media usage and subjective happiness is significant. This study has implications for mental health professionals seeking knowledge about happiness during periods of adversity.
La competencia digital docente del profesorado universitario de música: diseño y validación de un instrumento
Authors: Calderón-Garrido Diego , Carrera Xavier , Gustems-Carnicer Josep
Published: March 2021

La competencia digital docente reúne componentes de alfabetización y capacitación digital en consonancia con el nivel, el ámbito y la especialización del profesorado. En el caso del profesorado de Didáctica de la Música, en los grados de maestro en la universidad, dicha competencia presenta una serie de especificidades propias del área. Este artículo presenta el diseño, mediante el juicio de 16 expertos, y la posterior fiabilidad y validez de un cuestionario aplicado a una muestra de 93 docentes de 45 universidades españolas. Los resultados mostraron una buena fiabilidad y consistencia interna del instrumento, lo que garantiza su aplicabilidad y pertinencia para evaluar la competencia digital docente y el uso de la tecnología digital del profesorado universitario en el ámbito de la didáctica de la música.
El poder de la anticipación en la evaluación: simulacros de examen y rúbricas en la educación superior
Authors: Álvarez-Herrero Juan-Francisco
Published: March 2021

La manera de evaluar a los estudiantes sigue hoy en día cauces tradicionales y se fundamenta básicamente en realizar pruebas escritas al final del proceso de aprendizaje. El uso cada vez más presente de la formación en línea y de las metodologías activas en la educación superior hace necesario un replanteamiento de la evaluación. Entre los posibles instrumentos de evaluación, en esta investigación quisimos comprobar la eficacia de dos de ellos: el simulacro de examen y la rúbrica. En ambos, se aprovecha su anticipación a la evaluación final para reducir el estrés que esta origina, aprender del error y generar una mayor motivación e interés por el aprendizaje. Tras trabajar, utilizando y no dichos instrumentos, dos unidades temáticas con 53 estudiantes de segundo curso del grado de Magisterio en Educación Infantil, se comprobó que el uso de los simulacros de examen y las rúbricas generan una mejora del rendimiento académico y del desarrollo competencial del alumnado. Es importante destacar que estos instrumentos deben estar diseñados para evaluar el desarrollo competencial del alumnado y esto exige que el profesorado esté formado en ello. Basándonos en esto, abogamos por una necesaria formación del profesorado universitario en nuevas maneras de evaluar las competencias.
RubricApp: adaptación y Validación de una rúbrica para la Evaluación de Valor Pedagógico de las aplicaciones educativas móviles
Authors: Pinilla Morales Paola Andrea , Badilla Quintana María Graciela
Published: March 2021

En la actualidad, la educación remota ha sido una gran oportunidad para garantizar la continuidad de los aprendizajes de los estudiantes y las tecnologías de la información y comunicación (TIC) se sitúan como la mejor opción para asegurarlos. Desde esta perspectiva, el aprendizaje móvil y las aplicaciones educativas han facilitado la tarea de muchos profesores que preparan clases a distancia. El desafío radica en la selección de recursos que cuenten con valor pedagógico y promuevan el aprendizaje esperado. Este artículo se propone como objetivos: a) reportar la adaptación y validación de una rúbrica que permita apreciar el valor educativo de las aplicaciones móviles, la cual logra un alfa de Cronbach, α = .783;  b) informar los resultados del estudio piloto, los cuales permiten contar con un instrumento denominado RubricApp, que se estructura en 10 indicadores y 3 dimensiones: valor pedagógico, diseño, y participación y motivación.
THE EFFECT OF VARYING LEVELS OF RAW LIMA BEAN (Phasealus lunatus) ON THE RAT'S PANCREATIC AND INTESTINAL TRYPSIN (EC 3.4.21.4) AND CHYMOTRYPSIN (EC 3.4.21.1) ACTIVITIES
Authors: Aletor V. A. , Fetuga B. L.
Published: March 2021

Two series of assays involving a total of 120 growing rats were carried out to investigate the effect of varying levels of raw lima bean (RLB) on pancreatic and intestinal trypsin EC 3.4.21.4) and chymotrypsin (EC 3.4.21.1) activities. Experiment one indicates significant (P<0.01) inhibtion of both pancreatic trypsin and chymotrypsin due to RLB feeding. Enzyme activities in both the small and large intestine were also significantly (P<0.01) depressed while enzyme values in the caecum were not. Age x Diet interaction was non significant with respect to these enzymes. Pancreatic trypsin and chymotrypsin correlated significantly (P<0.01; P<0.05) with RLB with respective R2, coefficient of multiple determination, of 0.94 and 0.67. Trypsin activity in both the small and large intestine was also significantly (P<0.01) correlated with respective R2 of 0.78 and 0.96. The second study suggests a less than 10% replacement of cooked lima bean by the raw to avert significant pancreatic proteinase inhibition, and a less than 15% replacement of the cooked lima bean by the raw to aver t significantinhibition of the proteinases especially in the small intestine.
SHORT COMMUNICATION MEAT YIELD, QUALITY AND COMPOSITION OF THE BUSH FOWL (FRANCOLINUS BICALCAETUS BICALCARTUS L.)
Authors: Akande M. , Oluyemi J. A.
Published: March 2021

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SOME PATHOLOGICAL ASPECTS OF RAW LIMA BEAN (Phaseolus lunatus Linn. FEEDING TO GROWING
Authors: Aletor V. A. , Fetuga B. L.
Published: March 2021

Some pathological changes: accompanying raw lima bean (RLB) feeding to growing rats were investigated. Among the gross patholo­gical observations were severe pancreatic hypertrophy and spleen atrophy. The rela­tive weight of the liver was significantly (P< 0M5) decreased while the kidney weight was significantly (P< 0.05) increas­ed. The relative weight of the heart was unaffected. At necropsy, the small intestine of rats fed 40% RLB and aoove were dilated and filed with light-yellow gassy liquid. Histopathologically, livers of rats fed 40% RLB and above showed focuses of coagulative necrosis and marked congestion of hepatic sinusoids and centrolobular veins. The spleen showed marked depletion of lymphoid follicles and medullary' sinu­soids. There was evidence of marked conges­tion of renal blood vessels in the high RLB diets. No lesions were observed in the heart tissues. The morphology of the intestinal apicalmicrovilli were generally disrupted. They appeared stunted and fragmented especially in the rats fed 40% RLB and above. Mononuclei cell infilterate characterized the lamina propria of the small api Large inte­stinal rnicrovilli. No microvilli abnormalities were detected in rats fed 100% cooked lima bean (control) diet.
PERFORMANCE AND VISCERAL ORGAN WEIGHTS OF GUINEA FOWL (Numida meleagris) GIVEN DIFFERENT ANTIBIOTICS AS GROWTH PROMOTANTS
Authors: Oguntona T.
Published: March 2021

The effect of feeding recommended levels of three antibiotics on the visceral organs of growing guinea fowls has been examined. Day old broiler type guinea fowls were given Oxytetracycline, Rocaryone, and zinc bacitracin supplemented diet till 12 weeks of age. Dressed weight of medicated guineas were significantly higher than controls. No treatment effects were observed on the lungs, gizzards and reproductive organs. Fat pads were significantly (P.05) heavier in treated birds as compared with controls. Heart and liver weights were also significantly higher (P.05) in treated guinea fowls.
Effect Of Length Of Lay Of Nigeria Indigenous Chickens On Their Egg Composition And Shell Quality
Authors: Olori V. E. , Sonaiya E. B.
Published: March 2021

Three hundred and thirty eggs collected from the second to the seventh month of production, from a flock of the Nigeria indigenous (NI) chickens, were analysed to determine the effect of the length of lay on egg composition and shell quality. The weights of the whole egg and its components as well as shell thickness were measured monthly while the proportion of the various components; egg shape index, shell density and shell weight per surface area were calculated. The results showed that egg weight, albumen weight and % albumen increased (P<0.05) with length of lay by 2.6g, 3.5g, 3.5g and 5.6% respectively between 2nd and 7th months. The change in the weight of the yolk, shell and egg shape index was not significant (P>0.05) between the 2nd and 7th months while % yolk, % shell, shell thickness and the shell weight per surface area decreased (P<0.05) by 4.2%, 0.64%, 0.04mm and 0.003g respectively within the same period. Strong phenotypic correlations were observed between the weights of the whole egg and the albumen (r=0.81), shell (r=0.63) and yolk (r=0.46) and also between shell thickness and its weight per surface area (r=0.81). These results indicate that egg size increased as the NI hen advanced in lay. Eggs laid in the 6th and 7th months contained more albumen than those laid earlier and the shell thickness decreased as the hens advanced in lay thus making them more liable to breakage.
The Effects of Graded Levels of Cane Molasses on the Performance Characteristics, Nutrients Utilization and Economy of Production of Yorkshire Pigs Reared in the Tropics
Authors: Babatunde G. M. , Fetuga B. L. , Oyenuga V. A.
Published: March 2021

Sixty Yorkshire weaner pigs were used in this trial designed to study the effects of high cane molasses levels in the diets of pigs on their performance and carcass characteristics, organ weights, nutrient utilization and on the economy of production. There were five diets formulated to contain 23% protein (dry matter basis) and differed in the levels of mollasses that were included at 0, 10, 20, 30 and 40%. The Yorkshire barrows and gilts used were randomly divided into 5 equal treatment groups of 12 pigs, made up of 6 barrows and six gilts, and of equal average initial live weight of about 17kg. Half of the pigs on each treatment were group-fed ad libitum, and half were individually fed. They were all slaughtered at the average final liveweight of about 65 kg. Highly significant treatment differences were obtained in the average daily gains, average daily dry feed and dry matter consumed/kg body weight, dressing percentage, carcass length, back fat thickness, percentages of ham and loin, trimmed and dissected fat, dissected bone, gut weight, fresh liver, heart, and kidney weights. There were no differences in the digestibility coefficients of dietary nitrogen, NFE and ether extract, but the differences were significant for the crude fibre digestibility. The N retained was also significantly influenced by the level of molasses, while the percentages of ME and DE utilized were not significantly altered by the molasses. The inclusion of cane molasses considerably reduced the cost per ton of feed, and resulted in higher gross revenues gained per pig relative to the control.
ESTIMATES OF PHENOTYPIC AND GENETIC CORRELATIONS IN WEST AFRICAN DWARF GOATS
Authors: Odubute I. K. , Akinokun J. O.
Published: March 2021

Records on 848 West African dwarf goat kids and 220 kiddings over a period of eight year's (1982-1989) were analyzed. The records were used to provide estimates of phenotypic and venetic correlations among parity, kidding interval, litter size at birth and body weight at various ages. Plenotypic correlation coefficients of +0.33 (P<0.01) and -0,17 (P<0.01) were obtained when parity was correlated with litter size at birth and kidding interval respectively. Phenotypic correlations among body weights were generally positive and significant (P<0.01). Parity was positively correlated (P<0.01) with body weight at the various ages except at 1 year (P>0.05). Litter size was, however, negatively correlated (P<0.01) with body weight at the various ages except at 1 year (P<0.05). The genetic correlations among body weights at variuus ages were positive and significant (P<0.01). Selection for body weight at in earlier age especially at 3 months is likely to result in improvement of yearling body weight.
PRE - AND POST HATCH GROWTH OF NIGERIAN INDIGENOUS GUINEA FOWL AS INFLUENCED BY EGG SIZE AND HATCH WEIGHT.
Authors: Ayorinde K. L. , Atteh J. O. , Joseph K.
Published: March 2021

Two experiments were conducted to investigate the effects of egg size on embryonic growth during incubation and of egg size and hatch weight on growth to 12 weeks of age in the Nigerian indigenous Guinea fowl. Weight loss in eggs incubated was about 5.42% while weight gain was 1.02g with the fastest increase in the last trimester of incubation. At hatching, the keets were 72.42% of the weight of the eggs. Egg weight was positively significantly (P<0.05) correlated with embryonic weight and is reliable for estimating the small, medium and large size. Egg weight was embryonic weight. Body weight up to 12 weeks of age differed when eggs were classified into significantly (P<0.05) and positively correlated to body weight up to 4 weeks of age and egg weight was found to be reliable for estimating body weight up to 4 weeks only. Hatch weight was also significantly (P<0.05) and positively correlated with subsequent body weight to 8 weeks of age.
REPEATABILITY OF EGG NUMBER AND EGG QUALITY TRAITS IN COMMERCIAL PULLETS
Authors: Okonkwo J. C. , Ibe S. N.
Published: March 2021

Repeatability estimates of 0.09 for egg number to 30 weeks of age; 0.67, 0.53, 0.51 0.20 and 0.26 for egg weight (EW), shell thickness (ST), Haugh unit (HU), yolk index (YI) and shape index (SI), respectively, at 22 weeks of age; and 0.85, 0.78, 0.82, 0.49 and 0.62 for the same traits, respectively at 30 weeks of age were obtained in a flock of exotic commercial pullets reared in cages. The expected relative genetic gain per generation of selection for repeated records was inversely related to the magnitude of repeatability. Thus, as laying progressed, repeatability estimates became higher and expected genetic gain from using additional records decreased and fewer records were required to characterize the pullets for inherent transmitting ability. While 4 eggs per hen areconsidered adequate for 22 - week EW, ST and HU, 8 eggs are required for YI and ŞI. The considered numbers of eggs for corresponding traits at 30 weeks are 3 and 4, respectively. Measurements on 10 eggs per hen are required for egg number to 30 weeks.
ECONOMICS OF TRADITIONAL CATTLE PRODUCTION IN THE NORTHERN GUINEA SAVANNA OF NIGERIA
Authors: Ndubuisi A. H. , Otchere E. O. , Ogungbile A. O.
Published: March 2021

A survey to determine the economics of traditional cattle production among agropastoralists was carried out in Giwa Local Government Area of Kaduna State. The survey covered 75 agropastoral households grouped into three categories viz: CI, CII and CIII for  livestock activities and two groups GP1 and GP2 for cropping activities. The analytical framework used in the study include simple gross margin and multiple regression analysesResults of the study indicated that 66.67% of the respondents have lived in the study area for up to five years. Total variable cost (TVC) varied with the size of herd. TVC averaged N958.72/LU for CI, N818.48/LU for CII and N561.29/LU for CIII. The agropastoralits were making some profit in both livestock and cropping actiVities. Gross margin/LU averaged N967.28/LU N1,118.93/LU and N1,344.93/LU for farmers in CI, CII and CIII, respectively. The gross margins in cropping activities were N372.24/ha for GP1 and N480.18/ha for GP2. Inputs identified in cattle production were relevant in explaining variations in output. There was a decreasing return to scale in cattle production. There was also an inverse relationship between unit cost of production and size of herd. The above results indicated that a substantial increase in the income of the farmers was possible. This could be achieved through integrated crop/livestock productionproper herd management and adequate provision of supplementary feed for dry season cattle production.
SEMEN CHARACTERISTICS OF RHODE ISLAND RED AND WHITE BREEDER COCKS
Authors: NWAGU B. I. , REKWOT P. I. , ABUBAKAR B. Y. , ONI O. O. , ADEYINKA A. , EGBUEDO U. C.
Published: March 2021

One hundred and three adult cocks of two different strains (Rhode Island White, 59 semen quality with concomitant effect on and Rhode Island Red, 44) were subjected to  weekly semen collection for four weeks. The Rhode Island White cocks had gross sperm  motility of 80.76± 1.45% while the value for the significant effects of low relative humidity, high Red cocks is 79.43+1.68% but the difference was temperatures, low rainfall and peak amount of insignificant. The Rhode Island White cocks had a higher (P<0.001) sperm concentration (1.93 0.10x10'/ml) than the Red cocks (1.27±0.12x10 /ml) while semen volume  (0.58±0.04ml) and colour (1.96±0.14) for the  Rhode Island White cocks were lower and   (P<0.001) than the corresponding values of  0.80+0.05ml and 2.820.16 for Rhode Island Red cocks. Colour was found to be positively correlated (r= 0.89) with concentration and rate of genetic progress. Breeding soundness total sperm (r=0.61). The correlation between  sperm concentration and volume, and evaluation of the breeding cocks is concentration and total sperm, were 0.72 and of 0.67 respectively.
ON-FARM ESTABLISHMENT AND PRODUCTIVITY OF GMELINA AND GLIRICIDIA AS BROWSE FOR GOATS
Authors: ADU I. F. , AINA A. B. J. , OKELEYE K. A.
Published: March 2021

The on-farm establishment and productivity of Gmelina arborea and Gliricidia sepium were studied with seven farmers in two Local when planted as feed gardens. These studies Government Areas of Ogun State. Gmelina seedlings and Gliricidia stakes were planted in Gliricidia) plots located at distances of 15 to 50m to the farmer's homestead and protected from straying animals with local fencing materials like bamboo and palm branches. Core soil samples were taken randomly within each plot chemical analysis. The growth and yield of browse plants were determined at 3 and 12 months after planting. The palatability and the use of the browse as supplement to cassava peel were also determined. The organic matter soil was fairly high with organic carbon of 1.1 to 13%. Leaves of Gmelina and Gliricidia had high contents of nitrogen with crude protein values of 16 to 26%. The leaves were also high in mineral content. The dry matter yield of the primary growth ranged from browse for goat feeding. 3 to 5 t-ha while leaf dry matter yield ranged from 0.4 to 1.4 t-ha. Goats relished Gmeling more than Gliricidia with daily dry matter  intakes of 638 and 453g respectively when offered as sole feed. It is concluded that Gmelina and Gliricidia produce good quality protein feed for village goats when they are managed as shrubs in a feed garden.
THE EFFECTS OF ENSILAGE ON THE NUTRITIVE CHARACTERISTICS OF POULTRY WASTE - CARBOHYDRATE MIXTURE AS LIVESTOCK FEED
Authors: IBEAWUCHI J. A. , ECHUMBA J. O.
Published: March 2021

In a laboratory study, the results of ensiling caged layer poultry waste with carbohydrate source to enhance its usefulness as feed ingredient for livestock were reported. Poultry waste (20%) mixed with cassava or sorghum flour was ensiled in test-tube silos and sampled at intervals during a 14-day storage period. In both mixtures, the dry matter (DM), crude protein (CP) and pH values were significantly. in Nigeria, poultry waste was affected (P<0.05) with time after ensiling. The DM values were higher (P<0.05) on day 10 than on day 0,5 or 14. The poultry waste-sorghum mixture increased in CP level (P<0.05) from 8.0% on day O to 9.1% on day 14 while in the  cassava mixture CP increased from 7.0% on day  7.6% on day 10. There was a drop in pH from 6.4 to 4.6 in both mixtures at the end of the storage period. The results showed that ensiling cassava or sorghum flour with poultry waste enriched the nitrogen content of the mixture thereby enhancing its usefulness  as livestock feed.
INCIDENCE OF ECTOPARASITES OF DOMESTIC FOWL IN AN ARID ZONE OF NIGERIA
Authors: ZARIA L. T. , SINHA P. K. , NATITI L. S. , NAWATHE D. R.
Published: March 2021

A total of 763 domestic fowls in Maiduguri a domestic fowl towns in the Arid Zone of Nigeria were examined for the presence in them of ectoparasites. The study revealed that 92.20% of the birds were of Nigeria. infested with ectoparasites. Major types of ectoparasites found were lice, ticks and mites and  their incidence was high in this area. A total of seven hundred and sixty three Management systems however influenced the incidence of the parasites and they were more flocks were prominent in July and least in January.
EFFECT OF FLUOROGESTERONE ACETATE IMPREGNATED INTRAVAGINAL SPONGES ON VAGINAL BACTERIAL FLORA OF EWES.
Authors: AMIN J. D.
Published: March 2021

The bacterial flora of the vagina of ten ewes was determined at sponge removal and two days later before insertion of fluorogesterone acetate intravaginal sponge. Using E. coli as a marker to species, there was a significant increase (P<0.05) in bacterial population when samples taken before sponge insertion and at removal were compared, but there was a significant (P<0.01) decrease in bacterial population when samples taken at sponge removal were season in Hertfordshire, England were compared to samples taken two days later. There was no significant difference (P>0.05) when bacterial population before the sponge insertion was compared with the bacterial population two days after sponge removal. It is concluded that following use of fluorogesterone acetate intravaginal pessaries (and injection of PMSG at sponge removal), there is increased bacterial growth in the vagina which is largely the eliminated two days after sponge removal.
EVALUTION OF POULTRY VISCERAL OFFAL AS A SUBSTITUTE FOR FISH MEAL IN GROWER PULLETS’ DIETS
Authors: Salami R. I. , Oyewole S. O. O.
Published: March 2021

The effect of replacing fish meal (FM) with graded level of poultry visceral offal meal (PVOM) in five growers pullets’ diets were investigated in a 4 - weeks study using 200 Isa brown  pullets from 14 to 18 weeks of age. There were four replicate per test diet, with 10 birds per replicate. Diet A (control) contained 4% FM as the sole source of dietary animal protein. PVOM was included in diets B,C,D and E at the levels of 1.81,2.37,3.55 and 4.73% of the diets to supply 25, 50, 75 and 100% of animal protein supplied by 4% FM in the control diet A respectively. All the test diets were isocaloric (11.8MJ ME/kg) and isonitrogenous (16% CP). There was no significant effect (p>0.05) of replacing dietary FM with PVOM (on an equal protein basis) on the performance parameters measured. Birds fed on diets A,B,C,D and E had similar (p>0.05) mean daily weight gains of 14.16, 13.66, 14.65, 13.35 and 13.84g/b d respectively. The mean daily feed consumption values were 73.61, 73.27,73.88, 72.10 and 71.76g/b d for the birds on diets A,B,C,D and E respectively while similar mean feed conversion ratios of 5.21, 5.45,5.04, 5.42 and 5.21were also recorded for the birds on diet A,B,C,D and E respectively. It is concluded that PVOM could replace FM completely on an equal protein basics in grower pullets diets. Cost of feed per unit of weight gain was lower on the PVOM-based diet than on the FM-based diet.
CHEMICAL ELEMENTS IN EGG SHELL OF A COMMERCIAL STRAIN OF DOMESTIC FOWL MANAGED IN A TROPICAL ENVIRONMENT
Authors: Oguike M. A.
Published: March 2021

A study was conducted to determine the chemical elements of the egg shell of exotic commercial pullets (Lohmann) in their first laying year. A total of 160 eggs from eight pullet were randomly selected at three-monthly intervals during the production year for the determination of chemical elements of the eggshell. The average concentrations of calcium, magnesium, phosphorus, nitrogen, potassium, sodium, zinc and iron were 90.36%, 0.87%, 0.90%, 3.85%, 0.51%, 0.10%, 0.002%, and 0.005% respectively. Most of the paired variates of the mineral elements showed significant (P < 0.01) inter-relationship as depicted by measures of correlation coefficients. There were no significant relationships between Ca and most mineral elements and on the other hand mg was significantly correlated with phosphorus N, K, and Zn. Correlation coefficients between P and Fe, N and Na, Zn or Fe and between Na and Zn were not significant.
THE VALUE OF DRIED AFRICA LOCUST BEAN PULP FOR THE FOWL
Authors: Oluyemi J. A.
Published: March 2021

Locally obtained dried pulp of the fruit of African locust bean (Parka filicoidea) was included at the rates of 2.5, 5.0, 7.5, 10.0%, at the expense of maize , in the diets of chicks and of pullets whose basal diets contained 25.5% and 18.0% respectively. The chicks were White Rock X Cornish (WRXC)and the Nigeria indigenous (Ind.). The six week body weight of the chicks were reduced to 648.2g (WRXC) on 2.5% and 425.3g (Ind.) on 5.0% dietary pulp, pulp. Beyond thee respective dietary levels of pulps, the body weight of the strains were significantly (P < 0.05) depressed. The feed conversion ration (2.8 – 3.1) mortality (1.7 – 2.5%), nitrogen retention (59.7 – 69.5) of the chicks and the metabolizable energy of the diets, (12.1 -12.9 MJ/kg., ME) were not significantly (P > 0.05) affected by dietary treatments. However, the better values with these traits were associated with the basal diets and were in respect of the WRXC chicks. The hen day production, egg weight and liveweight gain of the layers were significantly (P < 0.05) depressed when dietary pulp attained 7.5% (50.8%), 10.0% (53.5g) and 10.0% (132.1g) respectively. The yolk colour score (9 - 14) was significantly (P < 0.05) improved at 7.5 – 15.0% dietary pulp while feed conversion ration (2.7 – 4.9) and Haugh Unit (76.1 – 78.1) were not significantly (P > 0.05) affected by dietary treatment. The price of the pulp in relation to that of maize suggested that it was economic to replace maize to at least 2.5%and 5.0% in the diets of chicks and of the layers respectively
OPTIMUM PROTEIN AND ENERGY LEVELS FOR LOCAL AND EXOTIC EGG-TYPE, CHICKENS IN THE HUMID TROPICS
Authors: Obioha F. C. , Asuquo B. O. , Agomoh F. N.
Published: March 2021

The development of indigenous stock in the tropics must be accompanied by an evaluation of their nutrient requirements alongside those of the adapted exotic stock. In two separate experiments, a total of 28 dietary combinations of protein (18% — 24%) and metabilisable energy (2.6-3.2 Mcal/kg) were assessed using four lines of exotic, local and ex­otic x local crosses of 0-8 week old starter pullets. A combination of 2.8 Mcal/kg with 24% (E2.8 P24) gave the best overall performance, while E3.0 P24 gave the best feed efficiency. However, diet ELA Pis gave the least feed cost per unit of body weight gain of all the 28 diets. It is therefore suggested as the op­timum diet. The four genetic lines manifested wide variations in their performance values but showed no separate requirements for protein or energy.
Analisa Kadar Kromium VI [Cr (VI)] Air di Kecamatan Tanggulangin, Sidoarjo
Authors: Andini Ary
Published: March 2021

Tanggulangin is one of the sub-districts in Sidoarjo district affected by Lapindo mudflow caused by oil drilling system error located in the area of Siring, Porong. Therefore it had impacted the water quality in around Lapindo mudflow area. The aim of this research was to analysis the levels of water Cr (VI) Tanggulangin district. Water sample was analyzed by spectrophotometer with wavelength of 540 nm and done using two (2) steps ,which were(1) establishment of standard curve and (2) determination of Cr (VI) in water. Ten (10) water samples were taken from various villages in the subdistrict Tanggulangin. Based on the results on level of water chromium VI [Cr (VI)] analyze showed 4 of 10 samples had levels of water Cr (VI)higher than standard 0,05 mg/L (PP No.82 tahun 2001), those sample were 1, 3,4 and 10.
PENGARUH ASAP ANTI NYAMUK KERTAS BAKAR TERHADAP JUMLAHERITROSIT PADA MENCIT (Mus musculus L.)
Authors: Niswah Choirun , Syarifah Syarifah , Sany Fitria
Published: March 2021

Indonesia is a tropical country encountered species of mosquitoes, such as Aedes aegypti and Culex quinquefasciatus. One of the efforts made to eradicate mosquitoes is to use mosquito repellent. Mosquito repellent is one type of insect killers household pesticide (insecticide) containing dangerous transfultrin. This study aims to determine the effect of anti-mosquito smoke burn paper against the number of erythrocytes in mice (Mus musculus L.). The study was conducted in September 2016 in the Laboratory of Mathematics of Tarbiyah and Teaching Faculty of UIN Raden Fatah Palembang. The research method using a completely randomized design (CRD) with treatment P0 (without exposure to insect repellent), P1 (anti mosquito burn paper, 2 hours / day), P2 (anti mosquito burn paper, 4 hours / day), P3 (anti mosquito burn paper, 6 hours / day) each with 6 replications, for 20 days. On the last day to do the stabbing in the tail to draw blood, were calculated against the number of red blood cells (erythrocytes) by using Haemocytometer. The results showed that exposure to fuel anti-mosquito burn paper affect the red blood cells of mice that P1 (anti mosquito burn paper, 2 hours / day) with an average of 8,72 x 106 / mL blood, P2 (anti mosquito burn paper, 4 hours / day) with an average of 8,87 x 106 / mL blood, P3 (anti mosquito burn paper, 6 hours / day) with an average of 7,89 x 106 / mL of blood. Effect of anti-mosquito smoke burn the most significant papers in a decrease in the number of erythrocytes of mice (Mus musculus L.) is 6 hours of exposure to an average of 7,89 x 106 / mL. The result of Anova test showed F count > Ftable namely 7,80 > 4,40 it means the treatment has significance.
Decoupling of urban CO2 and air pollutant emission reductions during the European SARS-CoV-2 lockdown
Authors: Lamprecht Christian , Graus Martin , Striednig Marcus , Stichaner Michael , Karl Thomas
Published: March 2021

Abstract. Lockdown and the associated massive reduction in people's mobility imposed by SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) mitigation measures across the globe provide a unique sensitivity experiment to investigate impacts on carbon and air pollution emissions. We present an integrated observational analysis based on long-term in situ multispecies eddy flux measurements, allowing for quantifying near-real-time changes of urban surface emissions for key air quality and climate tracers. During the first European SARS-CoV-2 wave we find that the emission reduction of classic air pollutants decoupled from CO2 and was significantly larger. These differences can only be rationalized by the different nature of urban combustion sources and point towards a systematic bias of extrapolated urban NOx emissions in state-of-the-art emission models. The analysis suggests that European policies, shifting residential, public, and commercial energy demand towards cleaner combustion, have helped to improve air quality more than expected and that the urban NOx flux remains to be dominated (e.g., >90 %) by traffic.
Hyperspectral-reflectance dataset of dry, wet and submerged marine litter
Authors: Knaeps Els , Sterckx Sindy , Strackx Gert , Mijnendonckx Johan , Moshtaghi Mehrdad , Garaba Shungudzemwoyo P. , Meire Dieter
Published: March 2021

Abstract. This paper describes a dataset consisting of 47 hyperspectral-reflectance measurements of plastic litter samples. The plastic litter samples include
virgin and real samples from the Port of Antwerp. They were measured in dry conditions in the Flemish Institute for Technological Research (VITO) calibration facility, and a selection of the
samples were also measured in wet conditions and submerged in a water tank at Flanders Hydraulics. The construction on top of the tank allowed us to submerge the plastics and keep sediments in suspension. The spectral measurements were performed using an Analytical Spectral Devices (ASD)
FieldSpec 4 and a Spectral Evolution (SEV) spectrometer. The datasets are available on the 4TU.ResearchData open-access repository (ASD dataset:
https://doi.org/10.4121/12896312.v2, Knaeps et al., 2020; SEV dataset: https://doi.org/10.4121/uuid:9ee3be54-9132-415a-aaf2-c7fbf32d2199; Garaba et al., 2020).
Inventory of dams in Germany
Authors: Speckhann Gustavo Andrei , Kreibich Heidi , Merz Bruno
Published: March 2021

Abstract. Dams are an important element of water resources management. Data about dams
are crucial for practitioners, scientists, and policymakers for various
purposes, such as seasonal forecasting of water availability or flood
mitigation. However, detailed information on dams on the national level for
Germany is so far not freely available. We present the most comprehensive
open-access dam inventory for Germany (DIG) to date. We have collected and
combined information on dams using books, state agency reports, engineering
reports, and internet pages. We have applied a priority rule that ensures
the highest level of reliability for the dam information. Our dam inventory
comprises 530 dams in Germany with information on name, location, river,
start year of construction and operation, crest length, dam height, lake
area, lake volume, purpose, dam structure, and building characteristics. We
have used a global, satellite-based water surface raster to evaluate the
location of the dams. A significant proportion (63 %) of dams were built
between 1950–2013. Our inventory shows that dams in Germany are mostly
single-purpose (52 %), 53 % can be used for flood control, and 25 %
are involved in energy production. The inventory is freely available through
GFZ (GeoForschungsZentrum) Data Services (https://doi.org/10.5880/GFZ.4.4.2020.005)
(Speckhann et al., 2020).