Effect of Supplementation Purple Rice Bran in Diet on Performance and Oxidative Stress of Black Bone Chicken

Abstract

This research investigated the effects of purple rice bran diet supplementation on the production efficiency and oxidative stress of black bone chicken. Two hundred 1-week-old black bone chickens were randomly assigned to 5 groups of 40 birds each. For each treatment, the chickens were fed a basal corn-soybean diet supplemented with 0% (control), 3%, 6%, 9% and 12% of purple rice bran (PRB). The diets were formulated separately for 2 phases (week 1 to 3 and week 4 to 16). The findings indicated that the oxygen radical absorbance capacity (ORAC) levels in PRB supplemented groups were higher than those of the control group, and moreover the ORAC levels increased with increasing dose of PRB supplement. The production performance of black bone chickens fed with supplemented PRB diets was not significantly different to those of the control group. However, body weight gain (WG) of the study chickens fed with the PRB tended to be higher than that of those in the control group. However, the feed cost per gain (FCG) of the experimental chickens fed with the PRB supplemented diet was higher than that of those in the control group. With regards to malondialdehyde (MDA) in blood at weeks 4, 8, 12, and 16 weeks,
the studied black bone chickens supplemented with PRB bran had significantly lower levels than did the control group (P<0.05). Levels of MDA in breast meat after storage at 4°C on days 1, 3, 6, and 9 was not significantly different in black bone chickens supplemented with PRB and the control group. This study indicated that PRB supplementation in diet for black bone chicken had no effect on performance but improved the oxidative status of the chicken. The treatment had no effect on lipid oxidation in breast meat under storage.