Ficus hookeri tree leaves as herbal feed additives to enhance ruminal fermentation and reduced protozoal population in growing crossbred cattle
2024
A SANTRA | P JAMADAR | T TAKU | S TRIPURA | D K MANDAL | S K DAS
An experiment was conducted to evaluate the effect of dietary supplementation of Ficus hookeri leaf meal as herbal feed additive on rumen protozoal population, enzyme profile and fermentation characteristics in growing crossbred calves. Ten growing male crossbred (Jersey × Tharparker) calves with similar initial body weight of 91.8+1.37 kg, were randomly divided into two equal groups (T1 and T2) and fed individually under stall feeding for 140 days on a mixed ration containing rice straw and concentrate mixture in 50:50 ratio. Two types (C1 and C2) of iso-nitrogenous concentrate mixtures were prepared. Wheat bran in concentrate mixture (C2) of test group (T2) was partially replaced (4 parts w/w) with Ficus hookeri leaf meal. Daily dry matter intake between two experimental groups was similar. Rumen pH, NH3-N concentration and total rumen protozoal population decreased while ruminal TVFA and propionic acid production increased due to dietary supplementation of Ficus hookeri leaf meal as herbal feed additive. Activity of carboxymethyl cellulase, xylanase and b-glucosidase enzymes were significantly higher in the rumen liquor of calves fed Ficus hookeri leaf meal. It could be concluded that dietary supplementation of Ficus hookeri leaf meals as herbal feed additive have a potential for reducing rumen protozoal population and ammonia nitrogen concentration with improving ruminal TVFA and propionate production in growing crossbred calves.
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