Selection indices for dairy cattle including fitness traits
نویسندگان
چکیده
منابع مشابه
Genetic selection for temperament traits in dairy and beef cattle
Animal temperament can be defined as a response to environmental or social stimuli. There are a number of temperament traits in cattle that contribute to their welfare, including their response to handling or milking, response to challenge such as human approach or intervention at calving, and response to conspecifics. In a number of these areas, the genetic basis of the trait has been studied....
متن کاملImprovement of Prediction Ability for Genomic Selection of Dairy Cattle by Including Dominance Effects
Dominance may be an important source of non-additive genetic variance for many traits of dairy cattle. However, nearly all prediction models for dairy cattle have included only additive effects because of the limited number of cows with both genotypes and phenotypes. The role of dominance in the Holstein and Jersey breeds was investigated for eight traits: milk, fat, and protein yields; product...
متن کاملInternational Genetic Evaluations for Udder Health Traits in Dairy Cattle
Mark, T. 2005. International Genetic Evaluations for Udder Health Traits in Dairy Cattle. Doctoral dissertation. ISSN 1652-6880, ISBN 91-576-6992-9 The aim of this thesis was to investigate different approaches for international genetic evaluations of dairy sires for udder health traits. For this purpose, deregressed national genetic evaluations were used of Holstein milk somatic cell (SC) from...
متن کاملDairy Cattle-selection, Feeding and Management
ORGANIC ANALYTICAL REAGENTS By JOHN H. YOE, Professor of Chemistry, University of Virginia, and LANDON A. BARVER, Director of Research, American Viscose Corporation. A comprehensive treatise on organic analytical reagents. It represents probably the first attempt to collect in one volume the data hitherto scattered throughout the literature. A glossary of reagents is included, and a bibliograph...
متن کاملEconomically Relevant Traits and Selection Indices
IMPLICATIONS Sire selection should focus on that which is economical. This requires a true accounting of the traits that generate revenue or incur a cost within a specific beef cattle enterprise. Once the drivers of profit have been identified, sire selection should focus on the suite of traits that impact profitability. The use of bio-economic selection indices can dramatically reduce the comp...
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ژورنال
عنوان ژورنال: Archives Animal Breeding
سال: 1999
ISSN: 2363-9822
DOI: 10.5194/aab-42-5-1999