Rumen un-degraded dietary protein and TCA soluble protein with gambier leave residue supplementation as a source of tannins in cattle feed supplement

Ramaiyulis, Ramaiyulis (2021) Rumen un-degraded dietary protein and TCA soluble protein with gambier leave residue supplementation as a source of tannins in cattle feed supplement. In: UNSPECIFIED, Jember.

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Abstract

This study aims to obtain high rumen undegraded dietary protein and TCA soluble protein in a rations combination of forage, concentrates, and supplements. Gambier leaf residue (GLR) supplementation in cattle feed supplement contains 29.53% crude protein and 75.01% TDN energy. There were 4 treatment rations, forage (F), F + concentrate (FC), F + supplement (FS), and FCS, where the tannin concentration of 0.117% was found in the FS and FCS rations. Rumen microbial degradation and microbial protein synthesis were evaluated in vitro method using cattle rumen fluid. The results showed that GLR supplementation as a source of condensed tannins significantly reduced the rate of protein degradation in the rumen from 1.17 to 0.99% per hour. This effect has implications for the increase in rumen undegraded dietary protein (RUDP) and Peptide-N as rumen fermentation products. Rations containing supplements (FS and FCS significantly produced higher microbial biomass and microbial protein. TCA soluble N was superior in the FCS combination ration which produced the highest amount of protein for intestine sourced from RUDP and microbial protein.

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