Rumen and milk odd- and branched-chain fatty acid proportions are minimally influenced by ruminal volatile fatty acid infusions
نویسندگان
چکیده
منابع مشابه
The relationship between odd- and branched-chain fatty acids and microbial nucleic acid bases in rumen
OBJECTIVE This study aims to identify the relationship between odd- and branched-chain fatty acids (OBCFAs) and microbial nucleic acid bases in the rumen, and to establish a model to accurately predict microbial protein flow by using OBCFA. METHODS To develop the regression equations, data on the rumen contents of individual cows were obtained from 2 feeding experiments. In the first experime...
متن کاملFatty acid composition of ruminal bacteria and protozoa, with emphasis on conjugated linoleic acid, vaccenic acid, and odd-chain and branched-chain fatty acids.
Knowledge of the fatty acid profile of microbial lipids is of great nutritional importance to the animals and, subsequently, their products. This study was conducted to examine the fatty acid profiles of mixed rumen bacteria and protozoa. Bacterial and protozoal cells were isolated by differential centrifugation of rumen contents. The main fatty acids were palmitic (16:0) and stearic (18:0) in ...
متن کاملAbsorption of volatile fatty acids from the rumen of lactating dairy cows as influenced by volatile fatty acid concentration, pH and rumen liquid volume.
The effect of rumen liquid volume, pH and concentration of volatile fatty acids (VFA) on the rates of absorption of acetic, propionic and butyric acids from the rumen was examined in lactating dairy cows. Experimental solutions introduced into the emptied, washed rumen comprised two different volumes (10 or 30 l), four levels of pH (4.5, 5.4, 6.3, 7.2) and three levels of individual VFA concent...
متن کاملVolatile Fatty Acid Production in the Rumen of Sheep
It is not known whether the concentrations of volatile fatty acids (VFA) in the rumen are simply related to their rates of production. A technique which uses a continuous intraruminal infusion of carbon-14 labelled organic acid [14C] has been developed and permits the measurement of the rate of production of a single acid (acetic, propionic or butyric acid) at one time (Leng and Leonard 1965). ...
متن کاملFatty acid synthesis in adipose tissue. II. Enzymatic synthesis of branched chain and odd-numbered fatty acids.
Recent studies have done much to clarify the biosynthetic mechanism of normal long chain fatty acid synthesis (l-$)., However, very little is known about the biogenesis of odd-m bered and branched long chain fatty acids. Odd-numbered fat@ acids have been identified as minor components of ruminant milk (5), human milk (6), human blood (7), human sebum (8), rat phospolipids (9), and the lipids of...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2012
ISSN: 0022-0302
DOI: 10.3168/jds.2011-4827