Effect of enzyme supplementation on nutrient utilization and production performance in lactating murrah buffaloes

Enzyme stimulates metabolic and digestive processes leading to increased feed intake and improved nutrient availability in animals. This study was conducted to investigate the effect of enzyme supplementation on nutrient utilization and production performance in lactating Murrah Buffaloes during winter season.

Twenty four lactating Murrah buffaloes were selected for the study from Livestock Research Centre, Sardar Vallabhbhai Patel University of Agriculture and Technology, Modipuram, Meerut (UP). All the selected animals were randomly allocated into four treatment groups having six animals in each group on the basis of body weight, lactation length and milk yield. The daily nutrient requirements of lactating Murrah buffaloes in term of DM, DCP and TDN were provided as per the feeding standards of Indian Council of Agricultural Research, New Delhi (2013). Total Mixed Ration for buffaloes was prepared by mixing of roughage and concentrates in the ratio of 60:40 after grinding/chaffing. Roughage part was consisting of available winter season green fodder e.g. oat and wheat straw available at research centre. Feeding trial was planned into four treatment groups viz. T₁ (Basal diet without enzyme supplementation), T₂ (Basal diet with supplementation of Xylanase @ 800000 IU), T₃ (Basal diet with supplementation of Cellulase @ 240000 IU) and T₄ (Basal diet with supplementation of Xylanase @ 800000 IU and Cellulase @ 240000 IU).

From the present study, it was observed that the average milk yield (5.34 litre/day) was higher in T₄ as compared to other treatment groups, but the difference was non-significant. The average milk fat percent was recorded as 7.52, 7.58. 7.60 and 7.65 in T₁, T₂, T₃ and T₄ treatment groups, respectively. Although the results of T₄ group animals were comparatively higher in all major milk constituents the differences were found to be statistically non-significant. The average DM intake (kg/d, kg/100 kg BW and g/kg W^0.75) and CP intake (g/d, g/100 kg BW) were almost similar in all treatment groups. The TDN intake (kg/d, kg/100 kg BW and g/kg W^0.75) was significantly (P<0.05) higher in enzyme supplemented groups. The digestibility coefficient of CP, CF, NDF and ADF were higher (P<0.05) in buffaloes of T₄ over control (T₁) group. So, it was concluded from the above study that the milk production and milk composition could be improved with the combine use of Xylanase and Cellulase enzyme in murrah buffaloes due to improved CP and fibre digestibility.