He Beibei, Zhang Xueyi, Wang Weiwei, Wang Li, Shi Jingjing, Liu Kuanbo, Cheng Junlin, Wang Yongwei, Li Aike
Academy of National Food and Strategic Reserves Administration, Beijing 100037, China.
School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430048, China.
Int J Mol Sci. 2025 Jul 21;26(14):7025. doi: 10.3390/ijms26147025.
Long-term storage may induce lipid oxidation in brown rice and impact its utilization in animal diets. One-day-old male Ross 308 broiler chickens (with an initial body weight of 20 g) were randomly divided into three groups: corn-based diet (Corn), fresh brown rice-based diet (BR1) and stored brown rice-based diet (BR6), with 8 replicates of 10 birds per pen, in a 42-day feeding trial. The results showed that lipid oxidation indexes increased and fatty acid composition changed significantly in BR6 ( < 0.05). The dietary replacement of corn with brown rice showed no effects on growth performance of broilers ( > 0.05). However, palmitic acid and oleic acid increased, and stearic acid, linoleic acid and docosadienoic acid decreased in the broiler breast muscle of the BR1 and BR6 groups ( < 0.05). Ileum antioxidant enzyme activities increased in the BR1 and BR6 groups compared to the Corn group ( < 0.05), and the activities of α-amylase, trypsin, chymotrypsin and lipase decreased in the BR6 group compared to the BR1 and Corn groups ( < 0.05). Also, compared to the BR1 group, the overall expression of metabolites involved in drug metabolism-cytochrome P450, GnRH secretion and the estrogen signaling pathway in broiler ileum were down-regulated in the BR6 group ( < 0.05). In conclusion, the lipid oxidation of stored brown rice decreased digestive enzyme activities and changed metabolic characteristics in the ileum of broilers. While replacing corn with brown rice did not affect broiler growth performance, it reduced the contents of unsaturated and essential fatty acids in breast muscle and enhanced the ileal antioxidant functions of broilers.
长期储存可能会导致糙米发生脂质氧化，并影响其在动物饲料中的利用。1日龄雄性罗斯308肉鸡（初始体重20克）被随机分为三组：玉米基础日粮组（玉米组）、新鲜糙米基础日粮组（BR1）和储存糙米基础日粮组（BR6），每组8个重复，每栏10只鸡，进行为期42天的饲养试验。结果表明，BR6组的脂质氧化指标升高，脂肪酸组成发生显著变化（P<0.05）。用糙米替代玉米日粮对肉鸡生长性能无影响（P>0.05）。然而，BR1组和BR6组肉鸡胸肌中的棕榈酸和油酸增加，硬脂酸、亚油酸和二十二碳二烯酸减少（P<0.05）。与玉米组相比，BR1组和BR6组回肠抗氧化酶活性增加（P<0.05），与BR1组和玉米组相比，BR6组的α-淀粉酶、胰蛋白酶、糜蛋白酶和脂肪酶活性降低（P<0.05）。此外，与BR1组相比，BR6组肉鸡回肠中参与药物代谢-细胞色素P450、促性腺激素释放激素分泌和雌激素信号通路的代谢物总体表达下调（P<0.05）。总之，储存糙米的脂质氧化降低了肉鸡回肠中的消化酶活性，并改变了其代谢特征。虽然用糙米替代玉米不影响肉鸡生长性能，但它降低了胸肌中不饱和脂肪酸和必需脂肪酸的含量，并增强了肉鸡回肠的抗氧化功能。
