BREEDING FOR FEED EFFICIENCY: SWINE AND DAIRY CATTLE
نویسندگان
چکیده
منابع مشابه
Considerations for Improving Feed Efficiency in Dairy Cattle
Intensive selection of sires is possible by using artificial insemination; coupled with accurate measurement of a potential sire’s genetic value, this has markedly improved genetics for easily measured traits like milk production and type traits. Increased milk production has in turn increased gross feed efficiency through dilution of maintenance. Additional genetic gains in feed efficiency wou...
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Advances in breeding and management resulted in a considerable increase of production traits in Austrian dairy cattle. Besides, low input systems were also established. Possible genotype by environment interactions (G x E) and genetic antagonisms dependent on production level might indicate the need for separate breeding programmes for dairy farms diff ering in management intensity. Th us, G x ...
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Humans obtain a number of products from animals. These include food, clothing, medical materials, companionship and research knowledge to name a few. A valued ethic contends that it is inappropriate for one to treat another as a means to an end. In short, it is wrong to treat another as simply a product. Historically, non-human beings have not been included as “others” and thus their treatment ...
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Protein-damaging stresses, including heat shock, cold, altered pH and oxygen deprivation induce the expression of a subgroup of molecular chaperones, called heat shock proteins (Hsp), which consist of several protein families designated by their molecular weight, such as the Hsp90, Hsp70, Hsp60, and the small Hsp (sHsp) families. Small heat shock proteins (sHsp) with a molecular mass of 15–30 k...
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last rib backfat thickness, broken vertebrae, or scores for stomach ulcers (P > 0.21). Also, deletions of VTM premixes did not affect these same measurements (P > 0.22). However, RAC decreased (P < 0.01) backfat thickness by 8% and tended to decrease scores for stomach ulcers (P < 0.06). In conclusion, there were no interactions to suggest that the effects of RAC on growth performance and carca...
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ژورنال
عنوان ژورنال: Canadian Journal of Animal Science
سال: 1984
ISSN: 0008-3984,1918-1825
DOI: 10.4141/cjas84-061