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Effect of Diet on Enzyme Profile, Biochemical Changes and In sacco Degradability of Feeds in the Rumen of Buffalo
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Effect of Diet on Enzyme Profile, Biochemical Changes and In sacco Degradability of Feeds in the Rumen of Buffalo
Kamra, D.N.; Saha, Sudipto; Bhatt, Neeru; Chaudhary, L. C.; Agarwal, Neeta;
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Four rumen fistulated Murrah buffaloes were used to study the effect of four diets differing in roughage to concentrate ratio on rumen biochemical changes, microbial enzyme profile and in sacco degradability of feed in a Latin Square design. The animals were fed four diets consisting of 80:20, 70:30, 60:40 and 50:50 ratios of wheat straw and concentrate mixtures, respectively. Wheat straw and concentrate mixture were mixed with water (0.6 l/kg feed) and complete feed mixture was offered to the animals at 8:00 h and 16:00 h in two equal parts. The variation in pH of rumen liquor (difference of maximum and minimum during 0-8 h post feeding) increased with increasing level of concentrate mixture in the diet. There was no effect of diet composition on volatile fatty acids, total nitrogen and trichloro-acetic acid precipitable nitrogen in the rumen liquor, but ammonia nitrogen increased with increasing level of concentrate mixture in the ration. Major portions of all fibre degrading enzymes were present in the particulate material (PM) of the rumen contents, but protease was absent in PM fraction. The activities of micro-crystalline cellulase, acetyl esterase and protease increased with increase in the level of concentrate mixture, but the activities of other enzymes (carboxymethylcellulase, filter paper degrading activity, xylanase, -glucosidase and -xylosidase) were not affected. The in sacco degradability and effective degradability of feeds increased with increasing level of concentrate mixture in the ration.
Rumen Enzymes;Buffalo;Enzyme Profile;ISDMD;Diet Effect;Rumen Fermentation;Roughage Effect;Cellulase;Xylanase;Acetyl Esterase;
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