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Chae et al., 2002. Asian-Aust. J. Anim. Sci., 15 (2): 266-273

Document reference 
Chae, B. J. ; Lee, K. H. ; Lee, S. K., 2002. Effects of feeding rancid rice bran on growth performance and chicken meat quality in broiler chicks. Asian-Aust. J. Anim. Sci., 15 (2): 266-273
A total of 225 one-day-old broiler chicks (43.08 g initial body weight) were allotted to 3 dietary treatments for a 6-week feeding trial. The treatments were: (1) Control (defatted rice bran; DFRB), (2) fresh rice bran (FRB) and (3) rancid rice bran (RRB). Rice brans were intentionally spoiled by 2 degrees of rancidity by the values of free fatty acids (FFA): 7.6% (FRB) and 16.3% (RRB). Diets were prepared on an isonutrient basis, and defatted or rancid rice brans were included 5 and 10% for starter (0-3 week) and finisher (3-6 week), respectively. At the end of the feeding trial, 6 chicks per treatment were sacrificed, and thigh meats were ground and stored at 1C for thiobarbituric acid reactive substances (TBARS) and peroxide value (POV) analyses. For a digestibility trial, 48 growing chicks (4 weeks old) were employed in cages (3 replicates/treatment, 2 birds/cage) according to the experimental design: FRB, RRB, pelleted and extruded rice bran. Some of the FRB were pelleted (70C) or extruded (110C). There was no significant difference in growth performance during the starter period, but chicks fed a diet containing DFRB grew faster (p<0.05) with increased feed intake (p<0.05) than those fed diets containing rice brans, FRB or RRB, during the finisher period. Feed conversion ratio in the RRB was inferior (p<0.05) to the DFRB. Between rice bran groups, weight gain was higher in FRB than in RRB during finishing period. There was a similar trend in growth performance of chicks for the overall period (0-6 week) as the finishing period. Dry matter and energy digestibilities were higher (p<0.05) in extruded than in RRB group. Protein digestibility was improved (p<0.05) when rice bran was extruded, but not pelleted. The chicken meats from RRB showed higher (p<0.05) TBARS than those from FRB during storage for 4 weeks at 1C. In conclusion, it would appear that feeding rancid rice bran gave negative effects on growth performance and lipid stability of meat in broiler chicks.
Citation key 
Chae et al., 2002