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Effect of feeding protected cholesterol on ruminant milk fat secretion
Author(s) -
Gulati S. K.,
Cook L. J.,
Ashes J. R.,
Scott T. W.
Publication year - 1978
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02533482
Subject(s) - ruminant , cholesterol , milk fat , clinical chemistry , lipidology , rumen , food science , biology , chemistry , secretion , zoology , endocrinology , agronomy , pasture , fermentation , linseed oil
Feeding 1–2 g/day of cholesterol protected against ruminal hydrogenation caused a 20–30% drop in the secretion of milk fat by goats and cows. The effect was observed with goats fed conventional rations or with goats and cows fed rations supplemented with protected lipids, but was not observed with cows fed conventional rations, or when unprotected cholesterol and protected β‐sitosterol was fed to these animals. The results suggest that this depression in milk fat is due to a decreased uptake of plasma triacylglycerol fatty acids by the mammary gland, induced by dietary cholesterol.