| Summary: | An experiment on the use of Complete Rumen Modifier (CRM) to improve dairy cow productivity and to mitigate enteric methane production has been conducted. Sixteen lactating dairy cows were distributed into 4 groups by using compelete randomized design (CRD). Group I (Control) fed by basal diet consisted of elephant grass and concentrate 7.5 kg/hd/dy (CP 16% and TDN 70%), Group II (Pro. Woodii) fed by basal diet + probiotic Woodii, Group III (Pro.Noterae) fed by basal diet + probiotic Noterae; Group IV (CRM-Noterae) fed by basal diet + CRM + Pro.Noterae. Measurements were conducted on body weight gain, average daily gain, feed conversion ratio, milk and methane production. Results showed that CRM-Noterae increased ADG by 72% (1.29 vs 0.75 kg) and improved FCR (9.2 vs 15.6). Probiotic noterae as single treatment or combined with CRM increased fat and total solid content of milk from 3.18% and 10.58% in control group to become 3.91%; 11.31% and 3.55%; 11.02%, respectively. The lowest methane production was recorded in Group IV. The combination of CRM and Noterae reduced percentage of methane production by 14%. It is concluded that combination of CRM and Noterae can improve dairy cow performance and decrease methane production. Probiotic Noterae improved milk quality.
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