期刊文献

RUMINAL AND FECAL FATTY ACIDS AND APPARENT RATION DIGESTIBILITY IN LAMBS AS AFFECTED BY DIETARY FATTY ACIDS 收藏

膳食脂肪酸对LAMBS中的RUMINAL和FECAL脂肪酸和视在血液消化率的影响
原文求助 发布源
作者
R. A. Clarke and ; W. K. Roberts
页码
31-38
DOI
10.4141/cjas67-005
来源信息
Canadian Journal of Animal Science ISSN：0008-3984, 1967年, 47卷, 1期, 31-38页
摘要
Two metabolism experiments were conducted with rumen-fistulated sheep to study effects of increasing dietary levels of unsaturated fatty acids upon ration digestibility and rumen-fluid volatile fatty acids. Apparent digestibility of ration components was not significantly (P > 0.05) affected by diet. However, crude fat digestibility values, which include fecal soap excretion, were 11–19 digestion units lower than comparable ether extract values. When diets high in unsaturated fatty acids were fed, the rumen and fecal levels of these acids were lower than dietary levels, suggesting that hydrogenation of C-18 polyethnoid fatty acids was occurring. Fecal soap excretion was affected very little by dietary unsaturated fatty acids, but stearic acid proportion of fecal soaps increased as the level of dietary unsaturated fatty acids increased. The ratios of acetic to propionic acid gradually decreased as the unsaturated fatty acids of the ration increased in one experiment, but in the other experiment no consistent pattern was observed.
摘要译文
用瘤胃瘘管绵羊进行了两个代谢实验，以研究增加不饱和脂肪酸的日粮水平对日粮消化率和瘤胃液体挥发性脂肪酸的影响。日粮中日粮成分的表观消化率不显着（P> 0.05）。然而，包括粪便肥皂排泄在内的粗脂肪消化率值比同等的乙醚提取物值低11-19个消化单位。当饲喂高不饱和脂肪酸的日粮时，这些酸的瘤胃和粪便水平低于日粮水平，表明C-18多萜类脂肪酸的氢化正在发生。饮食中不饱和脂肪酸对粪肥排泄的影响很小，但粪便中硬脂酸的比例随着日粮中不饱和脂肪酸含量的增加而增加。在一个实验中，当配给的不饱和脂肪酸增加时，乙酸与丙酸的比例逐渐降低，但在另一个实验中没有观察到一致的模式。
R. A. Clarke and ; W. K. Roberts. RUMINAL AND FECAL FATTY ACIDS AND APPARENT RATION DIGESTIBILITY IN LAMBS AS AFFECTED BY DIETARY FATTY ACIDS[J]. Canadian Journal of Animal Science, 1967,47(1): 31-38