Egg and serum cholesterol concentrations and zootechnical performances of layer hens fed with various levels of Niacin* F. KURTOGLU*, V. KURTOGLU and M. NIZAMLIOGLU
نویسندگان
چکیده
Cholesterol metabolism in the laying hen has been studied by determining the effect of dietary factors on the concentrations of blood and egg cholesterol. In most animals, cholesterol is eliminated by catabolism and excretion in the feces as biliary acids, but hens eliminate considerable amounts of cholesterol in the egg [4]. Also, ANDREWS et al., [4] showed that egg cholesterol originates from serum cholesterol. But, other reporters [29, 33, 34] indicated that the plasma cholesterol concentration is not closely associated with the concentration of yolk cholesterol.
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