Milk performance of dairy cows supplemented with a combination of slow-release nitrogen and exogenous fibrolytic enzyme

The purpose of this on-farm trial was to evaluate the impact supplementing slow-release nitrogen (SRN; min. 40% N) and exogenous fibrolytic enzyme (EFE; cellulase, xylanase, glucanase, mannanase xylanase-potentiating factor) products on milk yield composition in dairy cows. Twelve early-to-midlactating crossbred cows were divided into 2 groups with comparable production. Animals fed a total mixed ration comprising green maize, wheat straw concentrate mixture. Group T1 supplemented urea at 80 g/animal/d, whereas that T2 received novel combination cellulo-polymer-coated SRN g EFE 4 g/animal/d for period 20 days. Results showed no difference (13.8 vs. 15.1 kg/d; P=0.559) between groups; however, fat (3.49 3.87%) solid not (7.92 8.35%) levels higher (P<0.05) group than T1. Furthermore, applying 2-axis payment system, demonstrated return investment 8.3:1. It was, therefore, concluded carries practical worth enhance composition, thereby boosting economic gain farming under Indian context.