Response of growing lambs fed on different vegetable protein sources with or without probiotics
2011
Khalid, M.F. (University of Agriculture, Faisalabad (Pakistan). Inst. of Animal Nutrition and Feed Technology) | Sarwar, M. (University of Agriculture, Faisalabad (Pakistan). Inst. of Animal Nutrition and Feed Technology) | Mahr-un-Nisa (University of Agriculture, Faisalabad (Pakistan). Dept. of Physiology and Pharmacology) | Zia-ur-Rehman (University of Agriculture, Faisalabad (Pakistan). Dept. of Physiology and Pharmacology)
The study was planned to examine the effects of different protein sources with or without probiotics on the nutrients intake and their digestibility, nitrogen (N) balance, blood metabolites and growth performance. For this purpose, thirty two six month old lambs were randomly divided into eight groups, four animals in each, in a 4×2 factorial arrangement. Four iso-caloric and iso-nitrogenous diets were formulated using different protein sources [corn gluten meal 30% (CGM), canola meal (CM), cotton seed meal (CSM) and sunflower meal (SFM)] with (50 g/ton) or without probiotics. Dry matter (DM) and crude protein (CP) intake were higher (5.54%) in lambs fed CM diet, whereas neutral detergent fiber (NDF) and Acid detergent fiber (ADF) intake were higher in animals fed SFM diet. Dry matter, CP, NDF and ADF digestibility was not affected (P greater than 0.05) in lambs fed diets containing different protein sources. Addition of probiotics increased (P less than 0.05) NDF and ADF digestibility (9.0 & 9.56%, respectively). Blood glucose was significantly (P less than 0.05) higher (18.67%) in lambs fed CM diets. The N-intake and N-balance were different (P less than 0.05) in lambs fed diets containing different protein sources. Highest weight gain was observed in lambs fed CM diet, and lowest in lambs fed SFM diet. Feed conversion ratio was similar (P greater than 0.05) across all the treatments. It is concluded that CM is better protein source for growing lambs than CGM, CSM and SFM. Moreover, diets containing probiotics significantly influenced the growth performance of growing experimental lambs.
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