نتایج جستجو برای: herd management
تعداد نتایج: 859571 فیلتر نتایج به سال:
Genomic selection (GS) as theoretically introduced by Meuwissen et al. (2001) has been successfully implemented worldwide in dairy cattle breeding programs reflecting large populations, i.e., Holsteins, Fleckvieh, Jersey, and Brown Swiss, and has revolutionized conventional breeding schemes. Revolution of dairy cattle breeding programs via GS was the logical consequence due to the obvious possi...
This study describes the management and products of the Gasconne cattle in two neighbouring countries (Spainand France), as a model study in trans-border breeds, analysing if they are significantly different depending on the place where they are located. Fifty-seven Gasconne breeders were interviewed (32 inSpainand 25 inFrance). The survey examined several aspects of the productive farming syst...
The goal of this review was to analyze published data on animal management practices that mitigate enteric methane (CH4) and nitrous oxide (N2O) emissions from animal operations. Increasing animal productivity can be a very effective strategy for reducing greenhouse gas (GHG) emissions per unit of livestock product. Improving the genetic potential of animals through planned cross-breeding or se...
The Jackson Hole, Wyoming, elk herd lacks an effective “commons institution” for its management. Conflict over management is particularly intense for the segment of the herd that winters in the National Elk Refuge. The fundamental problem is that too many elk are concentrated in too small an area on the refuge in winter, leading to a high incidence of the disease brucellosis, vulnerability to t...
Veterinary clinicians and students commonly use diagnostic approaches appropriate for individual cases when conducting herd problem-solving. However, these approaches can be problematic, in part because they make limited use of epidemiological principles and methods, which has clear application during the investigation of herd problems. In this paper, we provide an overview of diagnostic approa...
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