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Showing 1 to 11 of 11 for “"Angus cattle"”.
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The use of carcass traits as indicators of heifer pregnancy in Angus cattle
… profitability in the cow-calf sector of the beef cattle industry is the reproductive ability of females, as revenue generated through calf sales to offsets female input costs and contributes to net income. An important measure of reproductive performance is heifer pregnancy, or the ability of …
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Genetic Heterogeneity of Residual Variance for Production and Functional Traits in American Angus Cattle
Beef cattle are continuously selected for different traits and the success in improving these traits has been remarkable. However, for certain traits, it is essential not only to improve the average performance, but also to control the variation around the mean. There is evidence that residual …
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Heritability and repeatability estimates of first service conception and first cycle calving in Angus cattle
… remains one of the largest economic impacts on cattle producers. Infertility and(or) sub-fertility in the cow herd can result in financial losses due to a reduction in calf crop, lower quality calves, and increased breeding and replacement costs. Improving reproductive efficiency via altered …
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Determining the added value of coproducts based adaptation diets and the heritability of variation in feed intake in Red Angus cattle
… of the feedlot industry is to maximize growth in cattle while minimizing costs in all phases of the finishing period. Traditionally, this is done by feeding diets high in grain to maximize energy intake. However, cattle coming to the feedlot are typically consuming diets high in forage and need …
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Characterization of NHLRC2 gene-edited mice: a model for bovine developmental duplications
… is a genetic condition recently characterized in Angus cattle. It is a congenital abnormality where duplication of neural crest derived tissues occurs during embryonic development. A common phenotypic presentation of the condition includes calves born with polymelia most frequently involving …
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The Influence of Zeranol Implants in Bulls, Late Castrates and Steers Fed for Slaughter
… postweaning zeranol implantation and breed (Angus vs Limousin) on growth, behavior and carcass traits. Bulls outgained steers and did not require more days-on-feed to a fat endpoint of .76 cm. The implant did not influence gain in bulls but did increase gain in steers. Angus and Limousins …
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The wintering and calving of Angus beef cows on a sawdust pad : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Animal Science at Massey University
… of wintering and calving beef cows on a sawdust cattle pad was compared with the traditional method of wintering unsupplemented cows on hill country pasture. Comparisons were made over four years, beginning in 1970. Two herds of Angus beef cows were used in the experiment. One herd was originally …
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CRISPR/CAS9 mediated gene editing for the improvement of beef and dairy cattle
… or insertion of beneficial mutations. In Angus beef cattle (Bos taurus), a mutation in the NHL-repeat containing 2 gene causes a heritable abnormality referred to as Developmental Duplications (DD). Calves homozygous for this mutation are affected with a broad range of neural tube defects …
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Identification and characterization of genetic markers and metabolic pathways controlling net feed efficiency in beef cattle.
… very few studies have been undertaken on beef cattle to identify genetic markers for NFE and to understand the molecular genetics of feed intake regulation and energy balance. Therefore, in an attempt to identify genes and metabolic pathways controlling feed efficiency in beef cattle, three …