Steam-volatile amines in rumen liquor from cattle and sheep
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چکیده
منابع مشابه
Volatile 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). ...
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In this study, milk and rumen liquor of stray cattle were found to contain measurable concentration of PolyChlorinatedBiphenyls (PCB). A notable finding in this study is that stray cattle have high level of PCBs where as the PCB in control group can not be detected. Since, reduction in space in the urban areas has pushed the cattle population to fend themselves in the streets, bovine milk act a...
متن کاملThe heat increments of mixtures of steam-volatile fatty acids in fasting sheep.
Kellner (1920)) in his calorimetric studies with cattle, showed that, as the fibre content of the ration increased, the net availability of its metabolizable energy fell. He attributed this fall to the additional physical work with consequent loss of heat in comminuting and digesting the more fibrous food. This cause may not be the sole contributor. Data in the literature, as summarized in Tabl...
متن کاملInterconversions and production of volatile fatty acids in the sheep rumen.
1. Sheep fed at a constant rate were infused intraruminally with [1-(14)C]-acetate, -propionate or -butyrate during 5hr. periods. 2. Volatile fatty acids were estimated in the rumen contents and steady-state conditions were obtained. 3. Of the butyric acid carbon 60% was in equilibrium with 20% of the acetic acid carbon, and 2-3g.atoms of carbon were interconverted/day. 4. Little interconversio...
متن کاملFermentation in the Rumen of the Sheep Iv. the Nature and Origin of the Volatile Fatty Acids in the Rumen of the Sheep
Early workers in the field of ruminant physiology were aware of the presence of formic, acetic, propionic and butyric acids (Tappeiner, 1884), and of smaller amounts of higher members of the saturated fatty acid series (Mangold, 1934), in the rumen fluid. Accurate data were not reported, however, until recently, when partition chromatography became available as an analytical procedure for the a...
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ژورنال
عنوان ژورنال: New Zealand Journal of Agricultural Research
سال: 1964
ISSN: 0028-8233,1175-8775
DOI: 10.1080/00288233.1964.10416399