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Maternal Birth Weight Breeding Value As A Contributing Factor Of Calf Birth Weight In Beef Cattle
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Book Synopsis Maternal Birth Weight Breeding Value as a Contributing Factor of Calf Birth Weight in Beef Cattle by : Lawrence Edward Lykins
Download or read book Maternal Birth Weight Breeding Value as a Contributing Factor of Calf Birth Weight in Beef Cattle written by Lawrence Edward Lykins and published by . This book was released on 1998 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Parameter Estimates and Breed Effects for Calving Difficulty and Birth Weight in a Multi-breed Population by : Cashley Marie Ahlberg
Download or read book Genetic Parameter Estimates and Breed Effects for Calving Difficulty and Birth Weight in a Multi-breed Population written by Cashley Marie Ahlberg and published by . This book was released on 2014 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are multiple breeds of beef cattle available to utilize in breeding systems to maximize production and economics. Calving difficulty (dystocia) is a significant cost to beef production and is more prevalent in first-calf heifers. The objectives of this study were to estimate genetic parameters and breed differences for calving difficulty and birth weight as a first step towards the development of across-breed adjustment factors for calving difficulty. Two models were employed to analyze birth weight (BWT) and calving difficulty (CD) recorded on 4,579 first parity females from the Germplasm Evaluation program at the U.S. Meat Animal Research Center (USMARC). Both bivariate animal models fit CD and BWT either using CD scores based on USMARC scoring system (Model 1) or CD assigned as Z scores based on the midpoint incidence rate (Model 2). Heritability estimates (SE) for BWT direct, CD direct, BWT maternal and CD maternal for model 1 were 0.35 (0.10), 0.29 (0.10), 0.15 (0.08), and 0.14 (0.08), respectively. Heritability estimates for BWT direct, CD direct, and BWT maternal for model 2 were similar to model 1. The estimate of CD maternal from model 2 was 0.13 (0.08). Genetic correlation estimates were positive between BWT direct and CD direct (0.63 ±0.17; model 1) and (0.64±0.17; model 2). All other genetic correlations were not significant. Bos Indicus influenced breeds tended to have the largest estimates of BWT direct. Calving difficulty direct breed effects ranged from -1.01 to 7.50 for model 1 and from -1.06 to 7.36 for model 2. Calving difficulty maternal breed effects ranged from -1.55 to 5.27 for model 1 and from -1.55 to 5.25 for model 2. Diverse biological types of cattle have different effects on both birth weight and calving difficulty. These differences can be used to match breeds to complement needs of production systems. Across-breed adjustment factors are needed for producers to accurately make selection decisions between sires of different breeds to improve calving difficulty.
Book Synopsis Effect of Breeding and Management Factors on Birth Weight, Dystocia, and Subsequent Rebreeding in Beef Cattle by : William Richard Henning
Download or read book Effect of Breeding and Management Factors on Birth Weight, Dystocia, and Subsequent Rebreeding in Beef Cattle written by William Richard Henning and published by . This book was released on 1974 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on the Maternal Genital Environment as a Factor in the Reproduction of Cattle by : Wilford Darrell Foote
Download or read book Studies on the Maternal Genital Environment as a Factor in the Reproduction of Cattle written by Wilford Darrell Foote and published by . This book was released on 1959 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Maternal and Some Other Influences on Birth Weight, Growth and Hair Coat in Two Dutch Cattle Breeds by : Saad Abou El-Naga Kassab
Download or read book On Maternal and Some Other Influences on Birth Weight, Growth and Hair Coat in Two Dutch Cattle Breeds written by Saad Abou El-Naga Kassab and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birthweight was very important for growth until 12 months of age, particularly in bull calves which were heavier fed than heifer calves. Correlation between birthweight and bodyweight in bull calves was ± 0.5.
Download or read book Research Bulletin written by and published by . This book was released on 1963 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Weights and Grades of Beef Cattle and Their Relation to Performance by : Thomas Johnson Marlowe
Download or read book Weights and Grades of Beef Cattle and Their Relation to Performance written by Thomas Johnson Marlowe and published by . This book was released on 1962 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting Birth Weight in Beef Cattle and the Relationship Between Birth Weight and Subsequent Performance by : James Elmer Hendry
Download or read book Factors Affecting Birth Weight in Beef Cattle and the Relationship Between Birth Weight and Subsequent Performance written by James Elmer Hendry and published by . This book was released on 1963 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Newborn Calf Body Measurements and Relationship of Calf Shape to Sire Breeding Values for Birth Weight and Calving Ease by : Russell Arthur Nugent
Download or read book Analysis of Newborn Calf Body Measurements and Relationship of Calf Shape to Sire Breeding Values for Birth Weight and Calving Ease written by Russell Arthur Nugent and published by . This book was released on 1990 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Maternal and Some Other Influences on Birth Weight, Growth and Hair Coat in Two Dutch Cattle Breeds by : Saad Abou El-Naga Kassab
Download or read book On Maternal and Some Other Influences on Birth Weight, Growth and Hair Coat in Two Dutch Cattle Breeds written by Saad Abou El-Naga Kassab and published by . This book was released on 1964 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting Calf Crop by : Michael J. Fields
Download or read book Factors Affecting Calf Crop written by Michael J. Fields and published by CRC Press. This book was released on 2021-11-18 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Factors Affecting Calf Crop summarizes the latest information available from leading cattle physiologists and geneticists regarding factors known to influence the production of live calves at weaning. You get practical information on management techniques for improving reproduction efficiency in the herd. You'll also learn about the functioning of the reproductive system and how this may affect reproductive processes in the cow herd. Managers will benefit from a clearer understanding of the factors known to limit efficient reproduction, while veterinarians and other professionals who advise cattlemen will appreciate the substantial reference material and color photographs for defining cow condition scores. Color photographs are also used to illustrate the discussions of testicular thermographies and their applications. Other chapters in the book cover developments in improving reproductive performance of the replacement heifer, the brood cow, and the bull. Topics on reproduction include physiology/endocrinology, the use of growth promotants, genetics and physiological and economic considerations in selecting the age to breed heifers, heritability of fertility, length of the breeding season, prepartum and postpartum nutrition, nursing by the calf, cloning of embryos, and much more.
Book Synopsis Effect of Environmental Factors and Fetal and Maternal Genotype on Gestation Length and Birth Weight of Holstein Calves by : L. J. Fisher
Download or read book Effect of Environmental Factors and Fetal and Maternal Genotype on Gestation Length and Birth Weight of Holstein Calves written by L. J. Fisher and published by . This book was released on 1978 with total page 1462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Uniform Beef Improvement Programs by : Dixon D. Hubbard
Download or read book Guidelines for Uniform Beef Improvement Programs written by Dixon D. Hubbard and published by . This book was released on 1981 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Milk Yield in Cows and Maternal Influences on Growth of Twin and Single Offspring Following Embryo Transfer by : Stephen Patrick Smith
Download or read book Milk Yield in Cows and Maternal Influences on Growth of Twin and Single Offspring Following Embryo Transfer written by Stephen Patrick Smith and published by . This book was released on 1979 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimation of Direct and Maternal Genetic Effects on Weaning Weight of Beef Calves by : David George St. Louis
Download or read book Estimation of Direct and Maternal Genetic Effects on Weaning Weight of Beef Calves written by David George St. Louis and published by . This book was released on 1974 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Factors Affecting Birth Weight of Beef Calves by : Huguette M. Tsatskin
Download or read book Some Factors Affecting Birth Weight of Beef Calves written by Huguette M. Tsatskin and published by . This book was released on 1953 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Factors Affecting Birth Weight of Beef Cattle by : Victor H. Galvez Moreno
Download or read book Some Factors Affecting Birth Weight of Beef Cattle written by Victor H. Galvez Moreno and published by . This book was released on 1966 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
