ASSESSMENT OF CASSAVA PEEL MEAL, METHIONINE AND ENZYME ON SERUM METABOLITES OF GROWING RABBITS

Résumé

This study evaluated the effect of cassava peel meal (CPM) inclusion, methionine (MET) supplementation and enzyme (ENZ) supplementation on serum chemical indices of growing rabbits. Two hundred and forty 5-weeks old rabbits were randomly distributed into 8 experimental diets/groups (1,2,3,4,5,6,7 and 8) with factorial arrangement (2x2x2) including 2 levels of CPM (0 and 350 g/kg), 2 levels of MET (5.6 and 8.3 g/kg) and 2 levels of ENZ (0 and 0.5 g/kg). Total protein (TPR) and albumin (ALB) concentration in rabbits fed diet 5 (350 g/kg CPM; 5.6 g/kg ENZ) were lower than the rest diets. TPR and ALB concentration were low at 350 g/kg CPM but improved by 8.3g/kg methionine and 0.5 g/kg enzyme supplementations. CPM inclusion tends (P=0.09) to increase the creatinine level, while 8.3g/kg methionine and 0.5 g/kg enzyme supplementations (P<0.05) reduced the creatinine level. Bilirubin level increased (P<0.05) with 350 g/kg CPM inclusion but was reduced by 8.3 g/kg methionine. The alanine amino transferase (ALT) and aspertate amino transferase (AST) levels increased (P<0.05) with 350 g/kg CPM inclusion. However, AST level tends (P-0.09) to reduce with 8.3g/kg methionine. Production of healthy rabbits with 350 g/kg CPM based diet required raising methionine supplementation to 8.6 g/kg and/or 5.0 g/kg enzyme supplementation.