EFFECT OF SUPPLEMENTING PLANT METABOLITES THROUGH ACACIA NILOTICA PLANT EXTRACT ON METHANE MITIGATION AND RUMEN FERMENTATION CHARACTERISTICS FOR DAIRY CATTLE
2022
A.Bharathidhasan
An experiment was conducted to study the effect of supplementing plant metabolites like tannin and saponin through Acacia nilotica plant extract on methane mitigation and rumen fermentation characteristics for dairy cattle by in vitro gas production technique (IVGPT) in forage based diet. A highly significant (P<0.01) reduction of methane was observed in Acacia nilotica plant extract supplemented groups than their respective controls. The significant (P<0.05) reduction of methane (ml) per 100 mg of truly digested substrate was found in 0.75 ml of Acacia nilotica extract supplemented group than other treatment groups after eliminating the errorinduced by the extractant. The rumen fermentation characteristics viz. ammonia nitrogen, in vitro true dry matter digestibility (IVTDMD), bacterial and protozoal population was significantly decreased in 0.75 ml and 1.0 ml Acacia nilotica plant extract added groups. The total volatile fatty acids (TVFA) and propionic acid were significantly (P<0.05) increased and acetic acid and acetate to propionate (A/P) ratio were significantly (P<0.05) decreased in 0.75 ml and 1.0 ml Acacia nilotica plant extract added groups than their respective control groups. It was concluded that the methane (ml) per 100 mg of truly digested substrate was significantly decreased at the inclusion level of 3.09 % of tannin and 2.34 % saponin through Acacia nilotica plant extract supplemented group than control.
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