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Evaluation Of Direct And Maternal Effects On Weaning Traits In Brahman Cattle
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Book Synopsis Evaluation of direct and maternal effects on weaning traits in brahman cattle by : J.J. Beltran Bru
Download or read book Evaluation of direct and maternal effects on weaning traits in brahman cattle written by J.J. Beltran Bru and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data from 1953 to 1976 on weaning wigths and scores of 3,765 Brahman calves were obtained from a private ranch in Central Florida.
Book Synopsis Evaluation of Direct and Maternal Effects on Weaning Traits in Brahman Cattle by : Jorge J. Beltran
Download or read book Evaluation of Direct and Maternal Effects on Weaning Traits in Brahman Cattle written by Jorge J. Beltran and published by . This book was released on 1978 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct and Maternal Effects on Preweaning Characters of Brahman, Hereford and Brahman-Hereford Crossbred Cattle by : Rodney Lee Roberson
Download or read book Direct and Maternal Effects on Preweaning Characters of Brahman, Hereford and Brahman-Hereford Crossbred Cattle written by Rodney Lee Roberson and published by . This book was released on 1984 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Direct and Maternal Additive and Heterotic Effects for Preweaning Growth Traits in Cattle Breeds Represented in the Southern Region by : Wayne Edward Wyatt
Download or read book Estimation of Direct and Maternal Additive and Heterotic Effects for Preweaning Growth Traits in Cattle Breeds Represented in the Southern Region written by Wayne Edward Wyatt and published by . This book was released on 1986 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct and Maternal Effects on Beef Cattle by :
Download or read book Direct and Maternal Effects on Beef Cattle written by and published by . This book was released on 1991 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: In cattle, pre-weaning (WG) and calving ease (CE) are referred to as maternal traits which have both a genetic and a behavioral basis. This study separates the direct and maternal effects of both WG and CE and estimates the heritability of each.
Book Synopsis Direct and Maternal Genetic Effects on Preweaning Characteristics of Brahman, Hereford and Brahman-Hereford Crossbred Cattle by :
Download or read book Direct and Maternal Genetic Effects on Preweaning Characteristics of Brahman, Hereford and Brahman-Hereford Crossbred Cattle written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct-maternal Genetic Correlations for Preweaning Growth in Hereford Cattle by : Assefaw Tewolde
Download or read book Direct-maternal Genetic Correlations for Preweaning Growth in Hereford Cattle written by Assefaw Tewolde and published by . This book was released on 1981 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maternal effects are an important source of variation in pre-weaning traits in beef cattle.
Book Synopsis Evaluation of Some Environmental Effects on Birth Weight, Weaning Weight and Preweaning Daily Gain, and Heritability Estimates for Those Preweaning Traits, in a Brahman Herd in Comayagua, Central Honduras by : Pelayo S. Bonilla M.
Download or read book Evaluation of Some Environmental Effects on Birth Weight, Weaning Weight and Preweaning Daily Gain, and Heritability Estimates for Those Preweaning Traits, in a Brahman Herd in Comayagua, Central Honduras written by Pelayo S. Bonilla M. and published by . This book was released on 1987 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Performance Traits in Brahman Cattle by : Kara J. Matheney
Download or read book Evaluation of Performance Traits in Brahman Cattle written by Kara J. Matheney and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of these studies were (1) evaluate the relationship between temperament, blood parameters, and performance in Brahman calves (n = 300); (2) evaluate the relationship between residual feed intake (RFI) and reproductive development in Brahman bulls (n = 41). Serum was collected at 24 h and d 21 to 24, and analyzed for total protein (TP) immunoglobulin G (IgG), and cortisol (CS). Calves were weighed at 24 h, weighed and evaluated for temperament using exit velocity (EV) at d 21 to 24, and at 28 d intervals thereafter. Beginning 28 d prior to weaning, and at 28 d intervals through 56 d post-weaning calves were evaluated for pen score (PS) used to calculate temperament score (TS = (EV+PS)/2). The average TS from 28 d prior to weaning and weaning was used to generate temperament groups; calves 1 SD below the mean being calm, those 1 SD above the mean being temperamental and all remaining classified as intermediate. Calf TS influenced WW (P = 0.04) and ADG from birth to weaning (P = 0.03). Serum TP at 24 h affected (P 0.05) WW and ADG from birth to weaning. Serum IgG at 24 h affected (P = 0.03) WW. Brahman bulls (n = 41) were evaluated for RFI, insulin-like growth factor I (IGF-I), temperament, reproductive development, and ultrasound carcass traits. Serum was collected at d 0 and d 70 of the feeding trial and analyzed for IGF-I. Bulls were classified as efficient, intermediate, or inefficient (RFI classification method I) and as efficient or inefficient (RFI classification method II). Bulls were evaluated for temperament at weaning using TS. Temperament influenced (P 0.05) IGF-I concentrations at d 0. Reproductive development was not affected (P 0.05) by TS. Residual feed intake classification did not influence (P 0.05) age at reproductive milestones. Ultrasound carcass traits were not affected by TS or RFI. Serum TP at 24 h was a viable indicator of future growth performance. Temperamental animals had lower growth rates in both studies. Reproductive development was not affected by RFI. BW at reproductive milestones was lower in temperamental bulls.
Book Synopsis Genetic Improvement of Cattle and Sheep by : Geoff Simm
Download or read book Genetic Improvement of Cattle and Sheep written by Geoff Simm and published by Oxford University Press, USA. This book was released on 2002-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Outlines the link between genes and performance in farm animals * Shows tools for more effective genetic selection * Highlights the role and ethical implications of new reproductive and molecular genetic technologies The application of scientific methods to animal breeding has led to major improvements in the output, cost and quality of animal products over the last few decades. This book describes the principles of genetic improvement of farm livestock and the practical application of these principles to dairy cattle, beef cattle and sheep breeding. This title has been taken over by CABI Publishing from Farming Press and was originally published in 1998
Download or read book Brazilian Journal of Genetics written by and published by . This book was released on 1994 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Report written by and published by . This book was released on 1995 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1983 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Genetics of Cattle, 2nd Edition by : Dorian Garrick
Download or read book The Genetics of Cattle, 2nd Edition written by Dorian Garrick and published by CABI. This book was released on 2014-11-28 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the time of domestication more than 10,000 years ago, cattle have played an increasingly crucial role in the development of human civilizations. Progress has been quite remarkable since the turn of the century; the sequencing of the bovine genome in 2009 launched new avenues for furthering our understanding of theoretical and practical aspects of cattle genetics. Covering a vast array of questions, this book reviews major topics from molecular and developmental genetics, disease resistance and immunogenetics to genetic improvement of dairy and beef breeds, addressing all current problems in the field. This second edition includes a new team of authors and completely new chapters on the genetics of fat production, nutrition, feed intake and efficiency, growth and body composition. Fully updated throughout, it provides a valuable resource on cattle genetics for researchers, breeders, veterinarians and postgraduate students.
Book Synopsis Adaptation and Fitness in Animal Populations by : Julius van der Werf
Download or read book Adaptation and Fitness in Animal Populations written by Julius van der Werf and published by Springer Science & Business Media. This book was released on 2008-10-17 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fitness and adaptation are fundamental characteristics of plant and animal species, enabling them to survive in their environment and to adapt to the inevitable changes in this environment. This is true for both the genetic resources of natural ecosystems as well as those used in agricultural production. Extensive genetic variation exists between varieties/breeds in a species and amongst individuals within breeds. This variation has developed over very long periods of time. A major ongoing challenge is how to best utilize this variation to meet short-term demands whilst also conserving it for longer-term possible use. Many animal breeding programs have led to increased performance for production traits but this has often been accompanied by reduced fitness. In addition, the global use of genetic resources prompts the question whether introduced genotypes are adapted to local production systems. Understanding the genetic nature of fitness and adaptation will enable us to better manage genetic resources allowing us to make efficient and sustainable decisions for the improvement or breeding of these resources. This book had an ambitious goal in bringing together a sample of the world’s leading scientists in animal breeding and evolutionary genetics to exchange knowledge to advance our understanding of these vital issues.
Download or read book Journal of Animal Science written by and published by . This book was released on 1991 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2000 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
