Effects of Feeding Dried Concentrated Rice-Washing Water on Growth Performance and Skeletal Muscle Lipid Peroxidation in Broiler Chickens

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This study was conducted to examine the effect of feeding concentrated rice-washing water (CRWW) on growth performance and lipid peroxidation levels in broiler chickens. CRWW (89.8% moisture) was dried at either a high (130°C) or low temperature (60°C). Three experimental diets were formulated as follows: 1) control diet; 2) diet containing 20% high-temperature dried CRWW (HT-CRWW); and 3) diet containing 20% low-temperature dried CRWW (LT-CRWW). Twenty-one chicks were divided into a control group and two treatment groups (seven chicks per group) at 15 days of age. The control group was fed the control diet, and the treatment groups were fed either an HT-CRWW or LT-CRWW-containing diet for 12 days. The growth performance (body weight, weight gain, feed intake, and feed efficiency) and the weight of the pectoral muscles were not different between treatment groups. Both HT-CRWW and LT-CRWW had a higher total polyphenol content and free radical scavenging activity than corn meal. Malondialdehyde (MDA) content, a marker of lipid peroxidation, was significantly lower in the skeletal muscle of chicks fed the HT-CRWW-containing diet compared with chicks fed the control diet; however, MDA content in chicks fed the LT-CRWW-containing diet did not differ from that of controls. CRWW has promise as a high-energy feed resource, and CRWW dried at high temperatures might affect lipid peroxidation in broiler chickens through higher antioxidant activity.

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