منابع مشابه
Nutrition : Vitamins and Minerals
In spite of all efforts to prevent formation of mycotoxins significant contaminations still occur. Contaminated grain or feed ingredients may encounter livestock health problems or poor animal performance because they can have chronic and acute effects on animals. By now, the worldwide most applied method to protect animals against mycotoxin-related diseases and to avoid carryover of mycotoxins...
متن کاملNonruminant Nutrition: Vitamins and Management
The deposition of dietary supplemented folic acid (FA) into the chicken egg is likely regulated by its absorption in the intestine. Therefore, factors affecting the intestinal transport of FA in the laying hen may influence the level of egg folate concentrations. To this end, a series of experiments using intestinal everted sacs were conducted to characterize the different aspects of the intest...
متن کاملRuminant Nutrition: Beef - Minerals & Vitamins
The effect of vitamin D source and time of feeding 25-OH vitamin D3 (HyD r ) on broiler production efficiency and carcass composition was studied. The first hydroxylation of vitamin D in the liver results in 25-OH vitamin D3 (25-OHD3); providing dietary 25-OHD3 to the bird reduces the need for this hydroxylation, potentially allowing for a more efficient use of vitamin D. The dietary treatments...
متن کاملRuminant Nutrition: Minerals and Vitamins
Iron (Fe) and copper (Cu) metabolism are closely intertwined, and a deficiency of Cu may lead to a secondary Fe deficiency. The impact of a severe Cu deficiency on proteins involved in Fe metabolism in the bovine has not been studied. Therefore, a 493 day study was conducted to determine the effect of a severe long-term Cu deficiency on Fe metabolism in beef cattle. Twenty-one Angus calves were...
متن کاملThe fat-soluble vitamins in poultry nutrition.
30. James, E. M., Norris, F. W. & Wokes, F. (1947). Analyst, 72, 327. 31. Jones, C. R. & M o m , T. (1946). Cereal Chem. m, @. 32. Jukes, T. H. (2941). J. Nutn’t. 21, 193. 33. Kemmerer, A. R. & Fraps, G. S. (1945). Bull. Tex. ag& Exp. Stu. no. 671. 34. Krehl, W. A., Huerga, J. de la, Elvehjem, C. A. & Hart, E. B. (1946). J . biol. C h . 166, 53. 35. Lillie, R. J. & Briggs, G. M. (1947). Poult. ...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1937
ISSN: 0306-3283
DOI: 10.1042/bj0310799