Gideon Glori Doss, R.Chandrapal Singh, K.Reddy, B.S.V.Prabhu, T.M.Narasimha Murathy, H.N.Ramu, K.C.2016-11-162016-11-162011-02-15http://krishikosh.egranth.ac.in/handle/1/85889PG, ThesisThe objective of this study was to improve the nutrient digestibility of two per cent urea treated Rhodes hay and growth performance of lambs by supplementation of surfactant and cellulolytic enzymes. In the growth trial, sixteen growing lambs were distributed into four groups of four each in a completely randomized design. The trial consisted of twelve weeks duration. The experimented groups were fed diet as T-1: Free choice feeding of 2% urea treated Rhodes hay, T-2: Free choice feeding of 2% urea and 0.1% Tween-80 Rhodes hay, T-3: Free choice feeding of 2% urea, cellulolytic enzymes ( 80 IU/g DM) treated Rhodes hay and T-4: Free choice feeding of 2% urea, 0.1% Tween-80 and cellulolytic enzymes ( 80 IU/g DM) treated Rhodes hay. The concentrate mixture containing 97 % Maize was uniformly offered to all animals at 1.5% of body weight. The average daily gain as g/day (ADG) was significantly different (P<0.05) between different dietary treatment groups viz., T -1 and T-2 (69.94 and 73.30 g/h/d), T-2 and T-3 (73.30 and 70.12 g/h/d), T-1 and T-4 (69.94 and 74.08 g/h/d), T-3 and T-4 (70.12 and 74.08 g/h/d). Even though there was no significant difference obtained pertaining to nutrient digestibility among all the four dietary treatment groups, numerically higher mean per cent digestibilities of CP and DM were observed in T-2 and T-4 treatment groups when compared to T-1 and T-3 treatment groups [CPD: T-1(72.24), T-2(73.94), T-3(70.43), and T-4(73.89), DMD: T-1(65.91), T-2(70.40), T-3(68.73), and T-4(69.74)]. This might be the reason for getting higher ADG in the treatment groups T-2 and T-4. So it is concluded that the two percent urea along with 0.1 per cent Tween 80 treated Rhodes hay and 2 per cent urea along with 0.1 per cent T-80 and cellulase enzyme (80 IU per gram of DM ) treated Rhodes hay are beneficial in obtaining better ADG of growing lambs.enEffect of Supplementation of Surfactant and Cellulolytic Enzymes on the Performance of Growing Lambs Fed Urea Treated Rhodes (Chloris Gayana) HayThesis