Effect of pawpaw leaf meal and multi-enzyme supplementation in the diet on performance, digestibility, and oxidative enzyme status of rabbits

Abstract Background This study aimed at determining the effect of pawpaw leaf meal (PLM 26.14% crude protein [CP] and 16.06% crude fiber [CF]) and multi-enzyme (m-E: amylase, beta-glucanase, phytase, cellulase, and xylanase, protease) supplementation in diets on performance, nutrient digestibility, and oxidative status of rabbits. Four experimental diets were formulated and designated as diet 1(0%PLM-m-E), diet 2(0%PLM + m-E), diet 3(10%PLM-m-E), and diet 4(10%PLM + m-E). One hundred and twenty (120), 5-week-old rabbits of cross breed rabbits (Chinchilla x New-Zealand white) of equal sexes; weighing 738.21 ± 33 g were randomly distributed to 4 dietary treatments (30 rabbits/treatment; 3 rabbits/replicate). Results Highest weight gain being recorded in rabbits fed diet 4 is similar to the weight gain recorded for rabbits fed diets 2 and 3 but higher (P < 0.05) than weight gain of rabbits fed diet 1. Best feed conversion ratio (FCR) recorded in rabbits fed diet 4 was comparable to the FCR of rabbits fed diets 2 and 3 but higher (P < 0.05) than FCR of rabbits fed diet 1. Higher CP digestibility recorded in rabbits fed diets 2 and 4 were similar to CP digestibility in rabbits fed diet 3 but higher (P = 0.01) than CP digestibility in rabbits fed with diet 1. The starch digestibility was higher (P < 0.05) in the rabbits fed m-E supplemented diets 2 and 4. Higher (P < 0.05) glutathione peroxidase and superoxide dismutase activities were recorded in rabbits fed with diets 3 and 4. Conclusion PLM inclusion and m-E supplementation improved performance, crude protein, and starch digestibility and antioxidant enzyme status of the rabbits.