An experiment was carried out to study the effect of inclusion of different locally available tree barks in total mixed ration on performance and nutrient digestibility in Nellore ram lambs. A ninety day growth trail was conducted with twenty eight Nellore Jodipi ram lambs (13.72 ± 0.05 kg B.Wt) which were randomly (CRD) allotted to four treatment groups with seven animals per treatment and were fed total mixed ration T1 (control), T2 (10% Neem bark), T3 (10% tamarind bark), T4 (10% Acacia bark). All the four total mixed rations were iso-nitrogenous. Feed intake was recorded daily while, body weights were recorded at weekly intervals. At the end of the trial, four ram lambs per treatment were slaughtered to study effect of total mixed rations containing different tree barks on carcass traits. Rumen liquor was collected from the individual ram lamb and analysed for rumen ammonia N and TVFA (Total volatile fatty acids) which didn't show any significant difference among different treatment groups. There was no significant (P > 0.05) difference in carcass characteristics like Pre-slaughter weight, dressing percentage, wholesale cuts and weights of organs. The addition of tree barks at 10% inclusion level in total mixed rations did not show any negative impact on carcass characteristics and rumen fermentation pattern of Nellore Jodipi ram lambs.

An experiment was carried out to study the effect of inclusion of different locally available tree barks in total mixed ration on serum biochemical profile and parasitic load in Nellore ram lambs. A ninety day growth trail was conducted with twenty eight Nellore Jodipi ram lambs (13.72 ± 0.05 kg B.Wt) which were randomly (CRD) allotted to four treatment groups with seven animals per treatment and were fed total mixed ration T1 (control), T2 (10% Neem bark), T3 (10% tamarind bark), T4 (10% Acacia bark). All the four total mixed rations were iso-nitrogenous. Feed intake was recorded daily while, body weights were recorded at weekly intervals. Blood samples were collected early in the morning at day 0 and 90 of the study. Faecal samples were collected early in the morning at fort -nightly interval. Serum biochemical profile of ram lambs at the beginning of the experiment indicated non-significant (P > 0.05) difference for serum glucose, total protein, globulin, ALT, AST and ALT: AST, cholesterol, triglycerides except for albumin (P<0.05). Serum biochemical profile at the end of the experiment revealed non-significant (P > 0.05) difference for serum glucose, total protein, albumin, globulin, ALT, AST and ALT: AST, but the concentration of cholesterol and triglycerides significantly (P< 0.05) reduced in the treatment groups supplemented with different tree barks when compared to control group. There was no significant (P > 0.05) difference in the faecal egg count of ram lambs fed total mixed rations containing different tree barks at 10% level when compared with control group throughout the experimental period. The egg count is reduced towards at the end of the experiment in the treatment groups supplemented with different tree barks. While, the egg count is increased towards the end of the experiment in control group. Addition of different tree barks in the diet didn't have negative impact overall health status of the animal.