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Asian Journal of Animal and Veterinary Advances
  Year: 2014 | Volume: 9 | Issue: 11 | Page No.: 732-742
DOI: 10.3923/ajava.2014.732.742
Effect of Supplementation of Yucca schidigera Extract to Growing Rabbit Diets on Growth Performance, Carcass Characteristics, Serum Biochemistry and Liver Oxidative Status
E.A. Ashour, M. Alagawany, F.M. Reda and M.E. Abd El-Hack

Abstract:
This study was performed to investigate the effect of dietary supplementation with Yucca schidigera Extract (YE) as growth promoter and natural antioxidant on performance, carcass characteristics, serum metabolites and liver oxidative status in growing rabbits. A total of 80, New Zealand White (NZW) rabbits at 5 weeks of age were randomly assigned to four treatments with four replicates. The dietary treatments consisted of the basal diet as control, YE groups receiving 200, 400 and 600 g kg-1 YE added to the basal diet. Body weights of rabbits were measured at 5, 7, 9 and 13 weeks, feed intake was measured at the same periods and feed conversion was calculated, accordingly. At weeks13, carcass characteristics, blood profile and antioxidant status in liver were determined. Live Body Weight (LBW) and Body Weight Gain (BWG) were not significantly influenced by the dietary treatments. Giblets percentage and relative weights (organ weight, g/100 g of body weight) of the heart, liver, spleen and lungs of rabbits at 13 weeks were not affected by dietary treatments. However, carcass yield percentage and relative organs of kidneys, skin and legs were statistically (p<0.05) influenced by dietary treatments. There were no differences (p<0.05) in total protein, globulin, AST, ALT and LDL-cholesterol due to treatments. While, the other blood parameters were statistically affected by YE supplementation. Dietary supplementation of YE to basal diet exhibited a significantly positive effect on immune related parameters (albumin, ALB immunoglobulin, IgG and IgM) and serum ammonia. The lowest value of ammonia achieved by animals fed diet contained YE 200 mg kg-1 diet. Rabbits fed YE 400 and 600 mg kg-1 of diet produced the best results of total-cholesterol in blood versus other diets, also HDL-cholesterol was gradually decreased with increasing YE supplementation. Hepatic Superoxide Dismutase (SOD) activity and reduced Glutathione (GSH), Malondialdehyde (MDA) concentrations were not significantly affected by the different levels of YE. But lipid peroxidation was slightly decreased with increasing YE supplementation. Dietary supplementation of YE to control diet exhibited a significantly positive effect on Glutathione Peroxidase (GSH-Px) and Catalase (CAT) activities. It could be conducted that, rabbits fed diet supplemented with YE did not affect growth performance in general but improved the immunity responses, in addition, animals fed diet supplemented with phytogenic additive had lower ammonia in blood, MDA in liver and increased hepatic antioxidant activities.
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How to cite this article:

E.A. Ashour, M. Alagawany, F.M. Reda and M.E. Abd El-Hack, 2014. Effect of Supplementation of Yucca schidigera Extract to Growing Rabbit Diets on Growth Performance, Carcass Characteristics, Serum Biochemistry and Liver Oxidative Status. Asian Journal of Animal and Veterinary Advances, 9: 732-742.

DOI: 10.3923/ajava.2014.732.742

URL: https://scialert.net/abstract/?doi=ajava.2014.732.742

 
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