纳米硒对AA肉鸡生长性能和肉品质的影响  

Effects of nano-selenium on growth performance and meat quality of AA broilers

作　　者：姜毅峰 王密 JIANG Yi-feng;WANG Mi

机构地区：[1]锦州医科大学畜牧兽医学院,辽宁锦州121000

出　　处：《饲料研究》2024年第15期40-44,共5页Feed Research

基　　金：锦州医科大学横向课题(项目编号:H2023006)。

摘　　要：试验旨在研究纳米硒对AA肉鸡生长性能和肉品质的影响。选取1日龄AA肉鸡480只,随机分为3组,每组8个重复,每个重复20只鸡。对照组在基础饲粮中添加0.4 mg/kg亚硒酸钠,试验1组在基础饲粮中添加0.3 mg/kg纳米硒,试验2组在基础饲粮中添加0.5 mg/kg纳米硒。试验期42 d。结果显示:与对照组相比,22~42日龄,试验1组和试验2组肉鸡平均日采食量显著降低(P<0.05),试验2组肉鸡料重比显著降低(P<0.05);试验2组肉色红度(a*值)显著提高(P<0.05),试验1组和试验2组胸肌剪切力显著降低(P<0.05);试验2组肉鸡胸肌谷胱甘肽过氧化物酶(GSH-Px)活性显著提高(P<0.05),试验1组和试验2组肉鸡胸肌总超氧化物歧化酶(T-SOD)活性显著提高(P<0.05);试验2组肉鸡胸肌重组与合成蛋白(Nrf2)表达量显著降低(P<0.05),醌氧化还原酶1(NQO1)表达量显著增加(P<0.05);试验1和试验2组肉鸡胸肌谷胱甘肽过氧化物酶1(GPX1)、血红素氧化酶-1(HO1)表达量显著增加(P<0.05)。研究表明,饲粮中添加纳米硒可以提高AA肉鸡肌肉的抗氧化能力,改善肉品质,其中添加0.5 mg/kg纳米硒的效果较好。The experiment was conducted to study the effects of nano-selenium on the growth performance and meat quality of AA broilers.A total of 480 one-day-old AA broilers were randomly divided into three groups,with each group having eight replicates and each replicate consisting of 20 broilers.The control group was supplemented with 0.4 mg/kg sodium selenite in the basal diet,while the experimental group 1 was supplemented with 0.3 mg/kg nano-selenium,and the experimental group 2 was supplemented with 0.5 mg/kg nano-selenium.The trial lasted for 42 days.The results showed that at 22 to 42 days of age,compared with the control group,the average daily feed intake of broilers in the group 1 and group 2 significantly decreased(P<0.05),and the feed-to-gain ratio of the group 2 significantly decreased(P<0.05).The meat redness(a*value)of the group 2 significantly increased(P<0.05),and the shear force of the pectoral muscle in the group 1 and group 2 significantly decreased(P<0.05).Compared with the control group,the activity of glutathione peroxidase(GSH-Px)in the pectoral muscle of the group 2 broilers significantly increased(P<0.05),and the activity of total superoxide dismutase(T-SOD)in the pectoral muscle of broilers in the group 1 and group 2 significantly increased(P<0.05).Compared with the control group,the expression of nuclear factor erythroid 2-related factor 2(Nrf2)in the pectoral muscle of broilers in the group 2 significantly decreased(P<0.05),the expression of quinone oxidoreductase 1(NQO1)in the pectoral muscle was significantly increased(P<0.05),the expression of glutathione peroxidase 1(GPX1)and heme oxygenase-1(HO1)in the pectoral muscle of broilers in the group 1 and group 2 significantly increased(P<0.05).The study indicates that the addition of nano-selenium in the diet can improve the antioxidant capacity of the muscle and the meat quality of AA broilers,with the 0.5 mg/kg supplementation showing superior effects.

关 键 词：纳米硒 肉鸡 生长性能 肉品质 抗氧化性能 

分 类 号：S831[农业科学—畜牧学]