bluuebunny/crossref_metadata_2025_split huggingface dataset:
Economic efficiency of Japanese Black cattle selection schemes utilizing crossbreeding with the Holstein breed
Authors: KAHI Alexander K. , HIROOKA Hiroyuki 
Published: March 2006

ABSTRACTThe economic efficiency of Japanese Black (JB) cattle selection schemes utilizing crossbreeding with the Holstein (H) breed was evaluated in the context of maximizing profitability. Selection schemes were defined that differed in the records available for use as selection criteria. The selection schemes were assessed based on profitability per cow in the JB cattle population. Within each selection scheme, two terminal crossbreeding systems were considered: two‐way crossbreeding without backcrossing (F1 system) and two‐way crossbreeding with backcrossing (F1 cross system). The impact on profitability of varying number of sires selected per year and the proportion of H cows that were inseminated by JB semen and of F1 females that are retained for replacement was examined for all selection schemes. Utilizing crossbreeding with the H breed was less profitable than purebreeding of the JB. Profitability was higher in the F1 system than in the F1 cross system in all selection schemes. Profitability was influenced more by changes in the number of sires selected per year than by the proportion H cows that were inseminated by JB semen and of F1 females that were retained for replacement. Implications of these results for the JB breeding program are discussed.
Gene constitution of South‐East Asian native chickens, commercial chickens and jungle fowl using polymorphisms of four calpain genes
Authors: OKUMURA Fumihiko , SHIMOGIRI Takeshi , KAWABE Kotaro , OKAMOTO Shin , NISHIBORI Masahide , YAMAMOTO Yoshio , MAEDA Yoshizane 
Published: March 2006

ABSTRACTThe gene constitution of polymorphisms of the four calpain genes (µ‐calpain, m‐calpain, p94, and µ/m‐calpain) were analyzed in South‐East Asian native chickens, White Leghorn and Broiler commercial chickens, and Red and Green jungle fowl. Polymorphisms were detected at all loci in chickens and Red jungle fowl, but only for CAPN1 (µ‐calpain gene) in Green jungle fowl. CAPN2 and CAPN1.5 are linked on chicken chromosome 3, and the genotype for these loci were treated as haplotype. Some combinations of calpain loci were tested using principal component analysis, and the best combination (CAPN1, CAPN3, and CAPN1.5) was determined. The proportion of polymorphic loci (Ppoly) and heterozygosity (H̄) were 1.00 and 0.316–0.465 in domestic chickens and red jungle fowl, and 0.33 and 0.137 in Green jungle fowl, respectively. GST values suggested that the degree of subdivision among native chickens was relatively low except for Thailand, which was highest. Pair‐wise FST testing, dendrogram and principal component analysis from the results of calpain loci showed that the four South‐East Asian native and commercial chicken populations were close genetically.
Effects of intracerebroventricular injections of leptin on the release of luteinizing hormone and growth hormone in castrated calves
Authors: NONAKA Sumie , HASHIZUME Tsutomu , KASUYA Etsuko 
Published: March 2006

ABSTRACTThe purpose of the present study was to clarify the hypothalamic action of leptin on the secretion of luteinizing hormone (LH) and growth hormone (GH) in cattle. Intracerebroventricular (the third ventricle) injections of leptin were given to fully fed castrated Holstein calves. Blood samples were collected at 10‐min intervals for 60 min after injection and 20‐min intervals for 60 min before injection and for 60–180 min after injection through an indwelling catheter in the external jugular vein. Plasma LH and GH levels were examined by homologous radioimmunoassay. The administration of 10 µg of leptin stimulated a significant (P < 0.05) release of GH but not LH. Average GH levels began to rise after 30 min and were significantly increased at 40, 50 and 60 min after the injection, compared with the respective control values (P < 0.05). The present result suggests that leptin may act partly on the hypothalamus to stimulate the release of GH in castrated calves.
Effects of high ambient temperature and restricted feed intake on urinary and plasma 3‐methylhistidine in lactating Holstein cows
Authors: KAMIYA Mitsuru , KAMIYA Yuko , TANAKA Masahito , OKI Tomoyuki , NISHIBA Yoichi , SHIOYA Shigeru 
Published: March 2006

ABSTRACTThree experiments were performed to examine the effects of high ambient temperature and feed restrictions on urinary 3‐methylhistidine (3MH) excretion and plasma 3MH concentrations as a marker of myofibrillar proteolysis in lactating Holstein cows. In a crossover design, four cows were maintained during two 14‐day treatment periods with ad libitum feed intake under constant moderate (18°C) or high (28°C) ambient temperature (Experiment 1), with ad libitum or 70% ad libitum feed intake under constant moderate temperature (Experiment 2), and with 70% ad libitum feed intake under constant moderate or high ambient temperature (Experiment 3). The total digestible nutrients intake was decreased (P < 0.01) under high ambient temperature (Experiment 1) or feed restriction (Experiment 2). Across experiments, urinary 3MH excretion during days 10–14 of each treatment period was not different among treatments. However, the plasma 3MH concentrations at day 14 of treatment were increased significantly under high ambient temperature with subsequent reduced feeding (P < 0.01) or moderate temperature with feed restriction (P < 0.05), and were increased slightly (P = 0.11) under high ambient temperature alone. These results show that the plasma marker of myofibrillar proteolysis in lactating dairy cows was increased at day 14 of treatments of high ambient temperature with subsequent reduced feeding, moderate temperature with feed restriction, or high ambient temperature alone.
Expression and localization of estrogen receptors α and β mRNA in medullary bone of laying hens
Authors: IMAMURA Tomohiko , SUGIYAMA Toshie , KUSUHARA Seiji 
Published: March 2006

ABSTRACTThe aim of this study was to observe the expression and localization of estrogen receptor (ER) α and ER β mRNA in the medullary bone of laying hens. First, medullary bone, liver, kidney, and shell gland of the oviduct tissues were dissected from laying hens. Then, the total cellular RNA was isolated from each tissue specimen, and the ER α and ER β mRNA expression was observed using semiquantitative RT‐PCR. Second, the localization of ER α mRNA in the medullary bone was detected with in situ hybridization using digoxigenin‐11‐UTP‐labeled cRNA probes. As a result, the expression of ER α mRNA was higher than that of ER β mRNA in the medullary bone, liver, and shell gland of the oviduct from laying hens. In the kidney, ER α mRNA expression was lower than that of ER β mRNA. The expression pattern of ER α and ER β mRNA of the medullary bone was similar to that of the shell gland of the oviduct. Moreover, ER α mRNA was intensively expressed in osteoblasts on the medullary bone surface and bone marrow stromal cells but was not expressed in osteoclasts. These results suggest that in medullary bone, estrogen action may be regulated not by ER β but by ER α.
Meat characteristics of Qinghai yak and semi‐wild yak
Authors: LUO Xiao Lin , TONG Zi Bao , WEI Ya Ping , ZHAO Xin Quan 
Published: March 2006

ABSTRACTSix domestic yaks aged 6 years, comprising three culling male and three culling female yaks, from the Qinghai Lake area and three male semi‐wild yaks aged 6 months from Datong Yak Farm were used to detect the levels of amino acids, mineral elements, residual heavy metals and pesticides in yak meat. The results showed that there was little difference in amino acid levels for different types of yak by age and sex. The meat of the adult male yak was 7.35 mg/kg higher in calcium (P < 0.05) and 124 mg/kg higher in phosphorus (P < 0.01) than that of the adult female yak. There was an obvious difference in zinc content, and there was also a significant difference for copper and sulfur between adult male and female yaks (P < 0.01). Iron was 8.85 mg/kg higher in semi‐wild yaks than in domestic yaks, but there were no differences for other minerals. The levels of residual heavy metals and residual pesticides were well within those allowed by the National Standard of China. Furthermore, the data showed that introducing wild yak’s blood did not result in a quality change in the domestic yak meat. Yak meat from Qinghai Plateau has the characteristics of being non‐polluted and rich in amino acids in comparison with local yellow cattle meat.
Determination of nucleotide sequence of SRY gene in sika deer (Cervus nippon)
Authors: FUKUI Emiko , KOGANEZAWA Masaaki , YOSHIZAWA Midori 
Published: March 2006

ABSTRACTThe aim of the present study was to determine the whole nucleotide sequence of the open reading frame of the sex‐determining region Y (SRY‐ORF) in wild sika deer. The SRY gene of wild sika deer was obtained by polymerase chain reaction (PCR) with DNA from blood samples. The whole nucleotide sequence of the SRY‐ORF in wild sika deer consisted of 687 bp and encoded 229 deduced amino acids. In comparison with the bovine SRY gene, the percentage of nucleotide sequence homology was 91.0% in the overall ORF, and those of the N‐terminal, high mobility group (HMG) box, and C‐terminal regions within ORF were 88.9%, 96.2% and 87.9%, respectively. The nucleotide sequences of sika deer SRY‐ORF characterized in the present study can be used for phylogenetic analysis or sexing in wild sika deer.
Differential responses of Arabidopsis ecotypes to cold, chilling and freezing temperatures
Authors: Hasdai M. , Weiss B. , Levi A. , Samach A. , Porat R. 
Published: March 2006

Abstract Arabidopsis plants show an increase in freezing tolerance in response to exposure to low nonfreezing temperatures, a phenomenon known as cold acclimation. In the present study, we evaluated the physiological and morphological responses of various Arabidopsis ecotypes to continuous growth under chilling (14°C) and cold (6°C) temperatures and evaluated their basal freezing tolerance levels. Seedlings of Arabidopsis plants were extremely sensitive to low growth temperatures: the hypocotyls and petioles were much longer and the angles of the second pair of true leaves were much greater in plants grown at 14°C than in those grown at 22°C, whereas just intermediate responses were observed under the cold temperature of 6°C. Flowering time was also markedly delayed at low growth temperatures and, interestingly, lower growth temperatures were accompanied by longer inflorescences. Other marked responses to low temperatures were changes in pigmentation, which appeared to be both ecotype specific and temperature dependent and resulted in various visual phenotypes such as chlorosis, necrosis or enhanced accumulation of anthocyanins. The observed decreases in chlorophyll contents and accumulation of anthocyanins were much more prominent in plants grown at 6°C than in those grown at 14°C. Among the various ecotypes tested, Mt‐0 plants markedly accumulated the highest levels of anthocyanins upon growth at 6°C. Freezing tolerance examination revealed that among 10 ecotypes tested, only C24 plants were significantly more sensitive to subzero temperatures. In conclusion, Arabidopsis ecotypes responded differentially to cold (6°C), chilling (14°C) and freezing temperatures, with specific ecotypes being more sensitive in particular traits to each low temperature.
Operating strategies for variable‐flow sequencing batch reactors
Authors: Bungay S. , Humphries M. , Stephenson T. 
Published: March 2006

AbstractSequencing batch reactors (SBRs) are variable‐volume, non‐steady‐state, suspended‐growth biological wastewater treatment reactors. The treatment process is characterised by a repeated treatment cycle consisting of a series of sequential process phases: fill, react, settle, decant and idle. The design and operation of an SBR must take into account (1) the biological process requirement for treating influent wastewater and (2) the hydraulic requirement to enable throughput of the water through the reactor without compromising on the quality of biological treatment. During routine operation, the priority between the process and hydraulic consideration can change depending on the influent flow rate and its rate of change. The importance of the interaction between these considerations will vary depending on the fill strategy and the cycle time control strategy. Where flow‐proportional cycle times are utilised to optimise the treatment process, the operating strategy must be capable of accurately adjusting the intercycle phase times to prevent loss of biological treatment or volumetric capacity. This paper considers various operating strategies and describes the specific strategy used at the SBR at Avonmouth wastewater treatment works.
Oriental Despotism and European Orientalism: Botero to Montesquieu
Authors: Rubiés Joan-Pau 
Published: March 2006

AbstractThe issue of how European images of the East were formed, used, and contested is far from simple. The concept of oriental despotism allowed early-modern Europeans to distinguish themselves from the most powerful and impressive non-European civilizations of the Ottoman Middle East, Persia, India, and China on grounds which were neither fundamentally religious nor linked to sheer scientific and technological progress, but political and moral. However, it would be incorrect to treat this as a pure European fantasy based on the uncritical application of a category inherited from Aristotle, because both the concept and its range of application were often hotly contested. By assessing the way travel accounts helped transform the concept from the Renaissance to the Enlightenment, this article argues that oriental despotism was not a mental scheme that blinded Europeans to the perception of the true Orient, but rather a compelling tool for interpreting information gathered about the Orient, one which served a common intellectual purpose despite important differences of opinion in Europe about the nature of royal power.
Alexithymia: a relevant psychological variable in near-fatal asthma
Authors: Serrano J. , Plaza V. , Sureda B. , de Pablo J. , Picado C. , Bardagí S. , Lamela J. , Sanchis J. 
Published: March 2006

Alexithymia is a psychological trait characterised by difficulty in perceiving and expressing emotions and body sensations. Failure to perceive dyspnoea could lead alexithymic asthmatics to underestimate the severity of an asthma exacerbation, and thereby increase the risk of developing a fatal or near-fatal asthma (NFA) attack. The objective of the present study was to determine the prevalence of alexithymia in NFA patients and to analyse their clinical characteristics.Alexithymia was assessed using the Toronto Alexithymia Scale in this multicentric prospective observational study. From 33 Spanish hospitals, 179 NFA patients and 40 non-NFA patients, as a control group, were enrolled.There was a higher proportion of alexithymia in the NFA group than in the non-NFA group (36versus13%). Patients with NFA and alexithymia were older than the rest of the NFA group, and had a lower level of education, a higher level of psychiatric morbidity, a higher proportion of severe persistent asthma and a greater number of prior very severe asthma exacerbations (49versus27%). Alexithymia, severe persistent asthma and a low level of education were identified as independent variables related to repeated very severe asthma exacerbations.The results show that alexithymia is more frequent in near-fatal asthma patients compared to the rest of asthmatics and is associated with recurrent very severe asthma exacerbations.
Cost-optimisation of screening for latent tuberculosis in close contacts
Authors: Diel R. , Nienhaus A. , Lange C. , Schaberg T. 
Published: March 2006

The aim of the present study was to perform cost-minimisation analysis of contact investigation from a public health perspective using the tuberculin skin test (TST) and a new blood assay, QuantiFERON-TB Gold (QFT-G).A decision-analysis model simulated the costs of investigating a cohort of adult close tuberculosis contacts by the public health service following the current German guidelines over a period of 2 yrs. The economic outcomes were compared with alternative screening strategies. These were: 1) QFT-G instead of TST; 2) TST followed by QFT-G; and 3) TST followed by QFT-G in vaccinated (bacille Calmette–Guérin (BCG)) subjects.In a base-case analysis, the costs of TST-based screening were 91.06 Euros (EUR)·contact-1, assuming a 1% tuberculosis-case-finding incidence. The least expensive strategy was TST screening plus subsequent QFT-G testing (52.05 EUR), resulting in a 43% cost reduction. Using QFT-G alone in BCG-vaccinated subjects who tested positive in the TST led to a 39% cost reduction. The savings using QFT-G alone instead of TST amounted to 29.77 EUR·contact-1. The results depended on the acquisition costs assumed and the proportion of positive results in TST-based screening.Screening for tuberculosis by combining tuberculin skin testing and QuantiFERON-TB Gold markedly reduces public health costs compared with tuberculin skin test screening alone.
Estimation of the bronchodilatory effect of deep inhalation after a free run in children
Authors: Schweitzer C. , Vu L. T. T. , Nguyen Y. T. , Choné C. , Demoulin B. , Marchal F. 
Published: March 2006

The bronchomotor effects of a deep inhalation (DI) may provide relevant information about the mechanisms of exercise-induced airway obstruction in children and may be assessed by respiratory conductance (Grs) measured using the forced oscillation technique. The aims of the present study were to assess the effect of DI onGrsafter exercise in relationship to the lung function response to exercise.Grsat 12 Hz using a head generator and spirometric data were measured in 62 children suspected of asthma before and 5 min after a 6-min free run.After exercise,Grswas significantly increased by DI in 38 subjects, who also showed largerGrsand forced expiratory volume in one second (FEV1)/forced vital capacity (FVC) responses to exercise than the 24 nonresponders. Stepwise regression indicated significant correlation between the response ofGrsto DI and bothGrsand FEV1/FVC responses to exercise.The data are consistent with exercise-induced bronchoconstriction being reversed by deep inhalation.
Comparison of three auto-adjusting positive pressure devices in patients with sleep apnoea
Authors: Nolan G. M. , Ryan S. , O’Connor T. M. , McNicholas W. T. 
Published: March 2006

Auto-adjustable continuous positive airway pressure (APAP) devices are an emerging treatment alternative to fixed-pressure continuous positive airway pressure (CPAP) therapy for obstructive sleep apnoea syndrome. They have been engineered to automatically adjust the pressure to the optimal level on a continuous basis. However, not all APAP technologies use the same algorithm. Three different APAP devices (Autoset Spirit, Breas PV 10i and RemStar Auto) were compared in a randomised crossover trial in patients already established on fixed-pressure CPAP therapy. The outcome measures were compliance, quality of life and side-effects.Twenty-seven middle-aged patients (25 male) previously diagnosed with severe obstructive sleep apnoea syndrome (median (interquartile range) apnoea/hypopnoea index 48 (29–76)), established on CPAP therapy for >3 yrs, were randomised to each APAP device for 4 weeks.Mean pressure and patient compliance were significantly lower on the Breas PV 10i than on the other APAP devices. The devices were similar in terms of quality of life, daytime sleepiness and upper airway side-effects, but patients evaluated them significantly differently in terms of device features, sleep quality and pressure comfort, with the Breas PV 10i being the least popular.Auto-adjustable positive airway pressure devices differ in pressure delivery and patient compliance in obstructive sleep apnoea syndrome patients.
Dual inhibition of the dactyl opener muscle in lobster
Authors: Worden Mary Kate , Camacho Joseph A. 
Published: March 2006

SUMMARY
The dactyl opener neuromuscular system of crayfish and lobster has long been a popular model system for studies of synaptic physiology and its modulation. Previous studies of its neural innervation in both species have reported that whereas the opener excitor axon (OE) and the specific opener inhibitor (OI) innervate the entire muscle, the common inhibitor (CI) is restricted to a small number of the most proximal muscle fibers and is the physiologically weaker of the two inhibitors. Here, we show in the lobster that, contrary to previous reports, CI innervates fibers along the entire extent of the dactyl opener muscle and thus shares the innervation targets of OE and OI. To characterize the physiological function of CI in the lobster dactyl opener system, we independently stimulated both OI and CI and compared their effects. The physiological impact of each inhibitor was similar:inhibitors elicit inhibitory junction potentials of similar sizes, both trigger muscle relaxations and both inhibit excitatory junction potentials and muscle contractions to a comparable extent. Thus, in the periphery, CI and OI appear to be equally powerful inhibitors with similar physiological roles,both in suppressing contractions triggered by the excitor OE and in directly relaxing muscle tension. In light of these observations, our understanding of the physiological roles of specific and common inhibitors in crustacean motor control requires reevaluation.
Forage fibre digestion, rates of feed passage and gut fill in juvenile and adult red kangaroosMacropus rufusDesmarest: why body size matters
Authors: Munn Adam J. , Dawson Terence J. 
Published: March 2006

SUMMARYUsing red kangaroos Macropus rufus Desmarest, a large (&gt;20 kg)marsupial herbivore, we compared the digestive capabilities of juveniles with those of mature, non-lactating females on high-quality forage (chopped lucerne Medicago sativa hay) of 43±1% neutral-detergent fibre (NDF)and poorer quality, high-fibre forage (chopped oaten Avena sativahay) of 64±1% NDF. On chopped lucerne apparent dry matter (DM)digestibilities by young-at-foot (YAF) red kangaroos (an age that would normally be taking some milk from their mother), weaned juveniles and mature females were similar (55–59%). On chopped oaten hay apparent DM digestibility was lower in the YAF (35.9±2.3%) followed by weaned(43.4±2.8%) and mature females (44.6±1%). The digestion of NDF and its components (mainly cellulose and hemicellulose) was lowest among the YAF followed by weaned and then mature females. The YAF and weaned kangaroos could not sustain growth on the poor-quality diet, and appeared to be at or near maximal gut fill on both forages; the values being 114–122 g DM for YAF and 151–159 g DM for weaned kangaroos. Mean retention times (MRT) of particle and solute markers were significantly longer for the YAF and weaned kangaroos on oaten hay than on lucerne hay, and DM intake (g d–1) was ∼50% lower on the oaten hay. In contrast, solute and particle MRTs in the mature females were not significantly affected by diet; they maintained DM intakes by increasing DM gut fill from 264±24 g on chopped lucerne to 427±26 g DM on chopped oaten hay. Clearly, the mature female kangaroos did not maximise gut fill on the high-quality forage,presumably as a consequence of their proportionally lower energy requirements compared with still-growing juveniles. Overall, we have provided the first mechanistic link between the physiological constraints faced by juvenile red kangaroos in relation to their drought-related mortalities, rainfall and forage quality.