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- Title
The Metabolism of Volatile Fatty Acids by Portal-Drained Viscera and Liver of Goats Fed Diets with Different Forage to Concentrate Ratio.
- Authors
Zhuang Su; Zhang Teng; Chang Guang-Jun; Yan Rui; Naeem, Muhammad; Rajput, Nasir; Shen Xiang-Zhen
- Abstract
Six non-lactating Chinese goats (average weight 40±2 kg) fed low forage (LF) or high forage (HF) diets were used in a randomized crossover trial to determine the net flux of VFA across portal-drained viscera and liver for 8 h from initial feeding. Chronic catheters were established in mesenteric, portal, and hepatic veins, and femoral artery to measure the plasma flow by using p-aminogippurric acid. The concentrations of acetate, propionate, butyrate, isobutyrate, isovalerate and TVFA were higher (P<0.05) and a ratio of acetate to propionate lower (P<0.05) in the portal, hepatic vein and artery in the LF diet compared with HF diets, but not for butyrate in portal vein and artery. The plasma flux of acetate, propionate, butyrate and TVFA in the portal, acetate and TVFA in artery were not affected by diets. The hepatic VF As fluxes were higher (P<0.05) in LF than HF diet. Net acetate was produced and net propionate, butyrate, isobutyrate and isovalerate were absorbed by the liver in LF or HF diet. Net gut plus hepatic output of acetate, propionate and TVFA were greater (P<0.05) in LF than HF diet. VF As concentrations reached at peak after feeding and then decreased in the portal, hepatic vein and artery in both diets. Net portal appearance and net gut plus hepatic output of VFAs reached peak at 2 to 6 h post-feeding and the maximum hepatic absorption of propionate, butyrate and output of acetate were observed at 2 to 6 h post-feeding. The results suggested that the plasma concentration and net fluxes of VFAs were increased in LF diet.
- Subjects
GOAT feeding &; feeds; CROSSOVER trials; RANDOMIZED controlled trials; HEPATIC veins; FATTY acids; PLASMA flow
- Publication
Pakistan Journal of Zoology, 2014, Vol 46, Issue 2, p391
- ISSN
0030-9923
- Publication type
Article