摘要
本文探讨了日粮不同硒水平对2～3月龄新西兰肉兔生长性能、抗氧化指标和肉质的影响。选用2月龄体重无显著差异的生长肉兔100只,随机分成5组,每组20个重复,在基础日粮中添加不同水平的硒(0、0.15、0.30、0.45和0.60 mg/kg),预试期7 d,正试期23 d。结果表明:在初始体重无显著差异的情况下,日粮不同硒水平显著影响平均日增重(ADG)(P=0.019 4),0.15和0.30 mg/kg添加组显著高于对照组(0 mg/kg)(P<0.05),日粮不同硒水平对料重比(F/G)影响显著(P=0.040 1),0.15和0.30 mg/kg添加组显著低于对照组(P<0.05);日粮不同硒水平对肝脏、血清和肌肉谷胱甘肽过氧化物酶(GSH-Px)活性有显著或极显著影响(P<0.05或P<0.01);对肝脏和血清超氧化物歧化酶(SOD)活性有显著影响(P<0.05);对肝脏过氧化氢酶(CAT)活性影响显著(P=0.043 4);对肝脏和肌肉丙二醛(MDA)含量影响显著(P<0.05);对血清总抗氧化能力(T-AOC)影响显著(P=0.037 6)。日粮不同硒水平对肌肉失水率影响显著(P=0.032 5),0.15 mg/kg添加组显著低于对照组和0.60 mg/kg添加组(P<0.05)。日粮不同硒水平对肌肉滴水损失影响显著(P=0.004 2),肌肉剪切力受日粮不同硒水平影响显著(P=0.028 5),各添加组均显著低于对照组(P<0.05)。日粮添加硒可以提高肌肉硒含量。综合本试验结果,2～3月龄肉兔日粮中硒的适宜添加量为0.15 mg/kg。
The experiment was conducted to study the effects of different dietary selenium levels on growth performance, antioxidant indices and meat quality of 2-3 months old growing meat rabbits. One hundred 2-month-old New Zealand rabbits with not significantly different initial body weight were randomly assigned to 5 groups with 20 replicates per group and fed basal diet supplemented with 0 （control group）, 0.15, 0.30, 0.45 and 0.60 mg/kg selenium, respectively. The trial lasted for 7 d for adaptation, and 23 d for test. The results showed that different dietary selenium levels significantly affected average daily gain （ADG） （P = 0. 019 4） and the ADG in 0.15 and 0.30 mg/kg added groups were significantly higher than those in control group （P〈0.05） with not significantly different initial body weight. The feed/gain （F/G） was significantly affected by different dietary selenium levels （P = 0. 040 1） and the F/G in 0.15 and 0.30 mg/kg added groups were lower than that in contorl group. Different dietary selenium levels had significant influence on glutathione peroxidase （GSH-Px） activity of liver, serum and muscle （P〈0.05 or P〈0.01）, superoxide dismutase （SOD） activity of liver and serum （P〈0.05） and catalase （CAT） activity of liver （P = 0. 043 4）. The malonaldehyde （MDA） content of liver and muscle （P〈0.05） and the total antioxidant capacity （T-AOC） （P = 0. 037 6） were significantly affected by different dietary selenium levels. Different dietary selenium levels had significant influence on muscle water loss ratio （P = 0. 032 5） and drip loss （P = 0. 004 2） and the muscle water loss ratio in 0.15 mg/kg added group was lower than that in control and 0.60 mg/kg added groups （P〈0.05）. The shear value of muscle was significantly affected by different dietary selenium levels （P = 0. 028 5） and the value in selenium supplemented groups were lower than that in control group. With the increase of dietary selenium levels, the selenium concentration of the muscle increased. In conclusion, the appropriate supplementation levels of selenium in diet of 2 3 months old growing meat rabbits was 0.15 mg/kg.
出处
《动物营养学报》
CAS
CSCD
北大核心
2010年第1期82-87,共6页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家公益性行业(农业)科研专项(3-52)
现代农业产业技术体系建设专项(nycytx-44)
关键词
硒
肉兔
生长性能
抗氧化指标
肉质
Selenium
Meat rabbits
Growth performance
Antioxidant indices
Meat quality
