Ruminal volatile fatty acid production in relation to animal production from grass
نویسندگان
چکیده
منابع مشابه
Ruminal Volatile Fatty Acid Production in Relation to Animal Production from Grass.
T h e studies of Sir Joseph Barcroft and his colleagues (Phillipson & McAnalIy, 1942; Barcroft, McAnally & Phillipson, 1944) at Cambridge in the early 1940s established that the volatile fatty acids (VFAs) produced during the fermentation of foodstuffs within the rumen of sheep and cattle are absorbed through the rumen wall and metabolized by the tissues. I t has since been shown (see Annison &...
متن کاملRates of production of volatile fatty acids in the rumen of grazing sheep and their relation to ruminal concentrations.
I . The rates of production, or entry rates, of acetic, propionic and butyric acids in the rumen of grazing sheep have been measured by a radioisotope technique previously used on penned animals. 2. Regression equations were derived relating entry rates to ruminal concentrations. The equations from penned and grazing sheep did not differ significantly. 3. The standard errors of entry rates pred...
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 کاملIn vitro and in vivo ruminal fermentation of micronised wood powder for volatile fatty acid production in beef cattle
The aim of the present study was to evaluate in vitro and in vivo ruminal fermentation of micronised wood powder in beef cattle. Micronised wood powder was prepared by pulverizing sapwood of Japanese cedar to a mean particle size of 52 μm. Ruminal fluid from four beef cows was anaerobically incubated with different amounts of micronised wood powder (50, 100, 200, or 400 mg per 30 ml rumen fluid...
متن کاملIn vitro lactic acid inhibition and alterations in volatile fatty acid production by antimicrobial feed additives.
Batch culture fermentations were used to determine the effects of avoparcin, lasalocid, monensin, narasin, salinomycin, thiopeptin, tylosin, virginiamycin, monensin + tylosin combination, and two new ionophore compounds (RO22-6924/004 and RO21-6447/009) on lactic acid and volatile fatty acid (VFA) production. Ruminal fluid from cattle fed a high alfalfa hay diet was incubated with glucose for 1...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Nutrition Society
سال: 1964
ISSN: 0029-6651,1475-2719
DOI: 10.1079/pns19640013