In order to determine the reproductive performance following parameters were registered: the number of live kits and still- born in a litter, the number of dea th s during the rearing, litter weight and a rabbit weight at 1, 7, 21 and 35 days of age. Effect of age, breed and sex on longissimus dorsi muscle area and subcutaneous fat depth in horses Allison Schauer University of Connecticut, Department of Animal Science Dr. Kumar Venkitanarayanan Honors advisor Dr. Sarah Reed Thesis advisor 4/8/15. 30/10/2015 · Introduction and Purpose. The policy of school organisation for grouping students in the same academic year is based on date of birth. The differences in the experiences and maturation of older students involve a relatively better performance in academic settings, which is known as the relative age. Effects of Strain, Sex and Age on Growth Performance of Malaysian Kampong Chickens Engku Azahan1, E.A., Azlina Azma2, I.A. and Noraziah2, M. 1Department of Agriculture, Biotechnology and Food Sciences, Universiti Sultan Zainal Abidin UniSZA, Tembila Campus, 22200 Besut, Terengganu. 2Strategic Livestock Research Centre. This study reports the distribution of sperm morphology defects by breed, age, season and region of 11,387 bulls in 500 herds in Australia and near Pacific Islands during annual BBSE. Bull location was divided into 4 broad climatic regions based upon temperature, vegetation and climatic risk.
The model included effects due to breed of sire, and individual animal was the experimental unit. Results and Discussion. Birth weight 781 steers and 800 heifers, weaning weight 539 steers, slaughter weight 444 steers, and carcass information 284 steers for the various breed groups is summarized in Table 1. EFFECT OF BREED TYPE AND QUALITY GRADE ON PERFORMANCE, CARCASS, AND TENDERNESS TRAITS FOR OK FEEDOUT STEERS B. A. Gardner1, H. G. Dolezal2, C. W. Shearhart3, F. K. Ray4, G. A. Highfill5 and S. L. Northcutt6 Story in Brief Performance, quality grade, yield grade, and tenderness values were evaluated for 177 spring-born steer calves. 17/10/2019 · Host genetic effects upon the early gut microbiota in a bovine model with graduated spectrum of genetic variation. Differences in age, breed composition,. This study reports the strong sire breed effect on hindgut microbiota and growth performance of beef cattle during early stage of life. 19/08/2016 · Analysis for back fat thickness BFAT and daily body weight gains from birth to the end of a performance test were conducted to find an optimal method for estimation of weaning age effects and to ascertain impacts of weaning age on the growth performance of purebred Berkshire pigs from a closed population in Korea.
The results of the performance test of 1109 purebred Zebu bulls descendents of 109 sires in grazing conditions were studied, as well as the effect of the age and the initial weight to the test in the daily gain and final weight to estimate the main factors affecting the form of the growth curve of these animals. Different mixed linear. 28/02/2019 · For maternal traits, regression coefficient estimates were always in a favourable direction, while for production, meat and slaughter quality traits, they were both favourable and unfavourable. Traits with the largest estimated effects of heterozygosity were total number born, litter weight at 3 weeks, weight at 150 days, and age at 40 kg. Upon weaning at approximately seven months of age, bulls weighed 404 lbs, while steers weighed 400 lbs. In contrast, Micol et al. 2009 reported that bulls castrated at 10 months of age had greater live weight gains from birth to weaning than bulls castrated at 2 months of age.
Effects of age, weight, and fat slaughter end points on estimates of breed and retained heterosis effects for carcass traits1. mates of breed and retained heterosis effects for age-adjusted carcass traits of steers from the GPU project. The purpose of the current study was to examine steer. 01/03/2012 · Final production live bird mass after fasting per unit area was 14.46, 19.46, and 24.23 kg/m 2, respectively, at 42 d of age. Several immune parameters were evaluated, and the growth performance, carcass yield, and meat quality were determined. Body weight at 28 and 42 d of age was significantly reduced as the stocking density increased P < 0. In conclusion, declines in performance are inevitable, but the rate of decline may be much slower than once believed. The increasing amount of research and results from masters age athletes continues to support the theory that we can all make gains, reap great health benefits and maintain a high level of fitness over the age of 40. Effects of Breed Type, Creep Feeding and Growth Implants on Heifer Pre- and Postweaning Growth and Reproductive Performance W. E. Wyatt, D. L. Thompson, Jr., D. C. Blouin, and R. A. Harpel Iberia Research Station, Department of Animal Science, and Department of Experimental Statistics F indings! Pelvic area at 19 months of age and. body weight gain. Performance and physical features associated with age indicates that commercial dairy heifers are underfed. The effects of heat stress and high feed costs also play a role. This has economic impli-cations because these animals will likely require more time before they enter the milk herd. The Commercial.
effects of feed additives on the blood profile of calves at both pre- and post-weaning age. Serum albumin in post-weaning calves of all feed additive groups were similar but significantly lower p<0.05 than in the control group. Post-weaning, IgM was significantly lower. 28/11/2011 · ABSTRACT. Forty Najdi ram lambs weighing 26.6±0.3 kg were utilized in this experiment to determine the effects of feed restriction followed by realimentation and body weight at the onset of feed restriction 30 and 36 kg body weights on performance and carcass characteristics; feeding and restriction levels were ad libitum.
01/06/2002 · In conclusion, age, breed, sex and time period influenced various skin biophysical parameters of dogs in this study. For examination of dietary effects on skin biophysical parameters, it is recommended that studies be conducted with just one breed to minimize variability. If this work is altered, transformed, or built upon, the resulting work must. Study the effects of non-genetic factors on performance of sheep breeds in Ethiopia. 2 Community-based breeding programs. and final selection for admission to breeding at 12 months of age. Selection at the. Thus, the objective of these experiments was to evaluate the effects of alternative weaning strategies on lamb growth and health when placed on pastures known to be infected with parasites. 2. Materials and methods. The Ohio State University Institutional Animal Care and Use Committee approved the protocols for these experiments. 15/09/2017 · The effects of domestication and ontogeny on cognition in dogs and wolves. However, former cognitive studies testing larger samples found no sex, no age and either no or only a weak breed effect in pet dogs 33,34,35,36. to rule out the possibility that animals only acted upon. 09/03/2007 · Effects of age and breed of beef bulls on growth parameters, carcass and muscle characteristics - Volume 80 Issue 3 - C. Jurie, J.-F. Martin, A. Listrat, R. Jailler, J. Culioli, B. Picard.
Breeding from ewe lambs – factors affecting performance Dr. Tim Keady and Noel McNamara Teagasc, Mellows Campus, Athenry, Co. Galway. Breeding ewe lambs, provided that they are managed to meet their nutritional requirements, reduces. considerations, and relationships with economic traits John Russell Thompson. Thompson, John Russell, "Dystocia in dairy cattle. Age of dam, maternal considerations, and relationships with economic traits "1980.Retrospective Theses and Dissertations. 7139. https:. Effects of breed, parity and sex of calf 41 Heritability 50.
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