Effect of exogenous fibrolytic enzymes supplementation to improve voluntary intake, availability of nutrients and growth performance in weaned crossbred calves

The present study was carried out to evaluate the effect of supplementation exogenous fibrolytic enzymes (EFE) on voluntary feed intake, availability different nutrients and growth performance in weaned crossbred calves. Fifteen healthy female Jersey calves (weight 79.73±3.46 kg; age 234.5±11.33 days) were divided equally into three groups viz., Control (T0), Treatment-1 (T1) Treatment-2 (T2). Growth trial conducted these for 90 days. Animals each treatment group fed ad lib. total mixed ration (TMR) (CP 12%, TDN 65%) individually Calves under control (T0) TMR (without EFE). T1 T2 supplemented with EFE cellulase xylanase @ 8000 16000 IU/kg DM 12000 24000 TMR, respectively. Significantly greater DMI per unit body weight (kg/100 kg BW g/kg W0.75) recorded enzyme compared group; however, difference between non-significant. Addition diet increased DCP intake (g/kg than T0 . Supplementation also enhanced (%), DNDF DE (Mcal/kg feed) ME value diets T0. Average daily gain (g/d/calf) estimated conversion efficiency similar among treatments. Whereas, plasma protein albumin concentration significantly due Therefore, it may be concluded that (cellulase DM) boost potential finisher nutrients.