FEED ADDITIVE FOR RUMEN FERMENTATION ADJUSTMENT AND FEED FOR CATTLE RAISING CONTAINING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a feed additive for rumen fermentation adjustment, with which generation of gas consisting essentially of methane in a rumen of cattle is controlled by saving a medicine such as antibiotic, etc., or not using the medicine as much as possible and using a raw material/a component substitutable for a medicine, safer to human and other animals and which is effective for controlling tympanites in case of large supply of concentrated feed and increases a feed efficiency, and a feed for cattle raising containing the additive. SOLUTION: In order to adjust a rumen fermentation of cattle, a feed containing ground material, extract, extract lees or seed lees of Uncaria gambir, Camellia sinensis, Prune or Stevia rebaudiana is given to cattle. Generation of gas consisting essentially of methane in a rumen of cattle is controlled, a feed efficiency is improved and tympanites in case of large supply of concentrated feed is effectively controlled. The feed additive for rumen fermentation adjustment of cattle substitutable for an antibiotic and safe to human and other animals is provided.