منابع مشابه
Dairy 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 کاملInvited review: Genomic selection in dairy cattle: progress and challenges.
A new technology called genomic selection is revolutionizing dairy cattle breeding. Genomic selection refers to selection decisions based on genomic breeding values (GEBV). The GEBV are calculated as the sum of the effects of dense genetic markers, or haplotypes of these markers, across the entire genome, thereby potentially capturing all the quantitative trait loci (QTL) that contribute to var...
متن کاملGenomic Selection and Reproductive Efficiency in Dairy Cattle
Thomas E. Spencer1, Peter J. Hansen2, John B. Cole3, Joseph Dalton4, and Holly Neibergs1 1Department of Animal Sciences, Washington State University, Pullman, WA 99164 2Department of Animal Sciences, University of Florida, Gainesville, FL 32611 3USDA‐ARS, Animal Genomics and Improvement Laboratory, Beltsville, MD 20705 4Department of Animal and Veterinary Science, University of Idaho, Caldwell,...
متن کاملGenetic 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 کاملGenotyping strategies for genomic selection in small dairy cattle populations.
This study evaluated different female-selective genotyping strategies to increase the predictive accuracy of genomic breeding values (GBVs) in populations that have a limited number of sires with a large number of progeny. A simulated dairy population was utilized to address the aims of the study. The following selection strategies were used: random selection, two-tailed selection by yield devi...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1959
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(59)90675-7