Isoacids supplementation improves growth performance and feed fiber digestibility associated with ruminal bacterial community in yaks.

ABSTRACT:

Introduction

This study was conducted to assess the effect of mixed isoacid (MI) supplementation on fermentation characteristics, nutrient apparent digestibility, growth performance, and rumen bacterial community in yaks.

Methods

A 72-h in vitro fermentation experiment was performed on an ANKOM RF gas production system. MI was added to five treatments at doses of 0, 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% on the dry matter (DM) basis of substrates using a total of 26 bottles (4 bottles per treatment and 2 bottles as the blank). Cumulative gas production was measured at 4, 8, 16, 24, 36, 48, and 72 h. Fermentation characteristics including pH, the concentration of volatile fatty acids (VFAs), ammonia nitrogen (NH₃-N), microbial proteins (MCP), and the disappearance

SUBMITTER: Jiang F 

PROVIDER: S-EPMC10311502 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature