Effect of herbal biostimulators on rumen liquor, blood and milk constituents of lactating cows

摘要

To overcome the problem of low digestibility and reduced milk yield in ruminants, various drugs, hormones, chemical stimulants, minerals, vitamins and feed additives have been used. However, many of these preparations are not economically efficient and also have side effects and are thus harmful to animal and human health. The present study was designed to evaluate the effect of herbal feed additives on rumen fermentation, blood biochemical and milk constituents in lactating dairy cows.