Document Type : Research Paper
Former Graduate Student, Tarbiat Modares University, Tehran, Iran
Professor, Animal Research Center, Karaj, Ira
Ph. D. Student, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
Professor, Animal Research Center, Karaj, Iran
This experiment was performed in a completely randomized design with four treatments and nine replicates per treatments, using of 36 Moghani male lambs. Four diets containing 0, 7, 14 and 21 percent (dry matter basis) of processed broiler litter (PBL) were used. Results showed that voluntary feed intake, average daily gain and total body weight gain were not influenced (P>0.05) by the experimental diets. Digestibility of DM and NDF decreased linearly (P<0.05) while no differences (P>0.05) were detected in OM and CP digestibility by inclusion of PBL in the diets. The Ruminal acetate concentration decreased but ammonia increased linearly (P<0.05) as the rate of PBL enhanced in the diet, however no differences (P>0.05) were obtained for the other metabolites between the animals received different diets. Blood urea-nitrogen increased linearly (P<0.05) by increasing of PBL in the diet, but other blood metabolites were not influenced (P>0.05) by the experimental rations. Results of current study indicated that feeding PBL in the diet of Moghani lambs up to 21percent, did not affect the nutrients intake and growth performance but decreased digestibility of DM and NDF and ruminal acetate concentration. In Addition, feed cost per unit of live weight gain was decreased (P<0.05) by inclusion of PBL in the ration. It is concluded that processed broiler litter could be used up to 21 percent of the diet for fattening lambs.
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