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首页> 美国卫生研究院文献>Asian-Australasian Journal of Animal Sciences >A Comparison of Natural (D-α-tocopherol) and Synthetic (DL-α-tocopherol Acetate) Vitamin E Supplementation on the Growth Performance Meat Quality and Oxidative Status of Broilers
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A Comparison of Natural (D-α-tocopherol) and Synthetic (DL-α-tocopherol Acetate) Vitamin E Supplementation on the Growth Performance Meat Quality and Oxidative Status of Broilers

机译：天然（D-α-生育酚）和合成（DL-α-生育酚乙酸酯）补充维生素E对肉鸡生长性能肉品质和氧化状态的比较

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The present study was conducted to compare the supplementation of natural (D-α-tocopherol) and synthetic (DL-α-tocopherol acetate) vitamin E on the growth performance, meat quality, muscular antioxidant capacity and genes expression related to oxidative status of broilers. A total of 144 1 day-old Arbor Acres broiler chicks were randomly allocated into 3 groups with 6 replicates of 8 birds each. Birds were given a basal diet (control group), and basal diet supplemented with either 20 IU D-α-tocopherol or DL-α-tocopherol acetate for 42 days, respectively. The results indicated that treatments did not alter growth performance of broilers (p>0.05). Compared with the control group, concentration of α-tocopherol in the breast muscle was increased by the supplementation of vitamin E (p<0.05). In the thigh, α-tocopherol content was also enhanced by vitamin E inclusion, and this effect was more pronounced in the natural vitamin E group (p<0.05). Vitamin E supplementation increased the redness of breast (p<0.05). In the contrast, the inclusion of synthetic vitamin E decreased lightness of thigh (p<0.05). Dietary vitamin E inclusion reduced drip loss at 24 h of thigh muscle (p<0.05), and this effect was maintained for drip loss at 48 h in the natural vitamin E group (p<0.05). Broilers given diet supplemented with vitamin E showed decreased malondialdehyde (MDA) content in the breast (p<0.05). Additionally, natural rather than synthetic vitamin E reduced MDA accumulation in the thigh (p<0.05). Neither natural nor synthetic vitamin E supplementation altered muscular mRNA abundance of genes related to oxidative stress (p>0.05). It was concluded that vitamin E supplementation, especially the natural vitamin E, can enhance the retention of muscular α-tocopherol, improve meat quality and muscular antioxidant capacity of broilers.
机译：本研究旨在比较天然（D-α-生育酚）和合成（DL-α-生育酚乙酸酯）维生素E对肉仔鸡生长性能，肉品质，肌肉抗氧化能力和基因表达的补充。总共144只1日龄的Arbor Acres肉鸡被随机分为3组，每组有8只鸡的6个重复。给予鸟类基础饮食（对照组），基础饮食分别补充20 IUD-α-生育酚或DL-α-生育酚乙酸酯42天。结果表明，处理没有改变肉鸡的生长性能（p> 0.05）。与对照组相比，补充维生素E可提高乳腺肌肉中α-生育酚的浓度（p <0.05）。大腿中的维生素E含量也可提高α-生育酚的含量，而在天然维生素E组中这种作用更为明显（p <0.05）。补充维生素E可增加乳房发红（p <0.05）。相反，合成维生素E的加入降低了大腿的亮度（p <0.05）。饮食中维生素E的加入减少了大腿肌肉24小时的滴水损失（p <0.05），而在天然维生素E组中48小时的滴水损失保持了这种效果（p <0.05）。饮食中添加了维生素E的肉鸡的乳房中丙二醛（MDA）含量降低（p <0.05）。此外，天然维生素E而非合成维生素E减少了大腿中MDA的积累（p <0.05）。天然或合成维生素E补充均未改变与氧化应激相关的基因的肌肉mRNA丰度（p> 0.05）。结论是补充维生素E，尤其是天然维生素E，可以增强肌肉α-生育酚的保留能力，改善肉品质和肉鸡的肌肉抗氧化能力。

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