作 者：
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(栾素军）;
机构地区：
中国农业科学院北京畜牧兽医研究所动物营养学国家重点实验室
出 处：
《中国农业科学》
2015年第21期4347-4357,共11页
摘 要：
[目的]探讨鸡舍内不同氨气浓度对肉鸡抗氧化性能和肉质性状的影响。[方法]采用单因素完全随机设计,将400只21日龄健康艾拔益加(AA)肉公鸡,随机分在4个呼吸代谢舱中,每个舱为1个处理,每个处理设4个重复,每个重复25只鸡。4个处理组分别为:对照组氨气浓度控制在<3 mg·kg-1,试验组氨气浓度分别控制在(25±3)、(50±3)和(75±3)mg·kg-1。呼吸代谢舱采用全自动化控制养殖环境条件。试验期为21 d,21—31 d为试验前期,32—42 d为试验后期。肉鸡采用网上平养,自由采食和饮水。分别在32 d和42 d屠宰取样,测定肉鸡血液、肌肉、肝脏的抗氧化性能以及肉质性状。[结果](1)抗氧化性能:在21—31日龄阶段,随着鸡舍氨气浓度的升高,肉鸡血清超氧化物歧化酶(superoxide dismutase,SOD)活性呈二次曲线增加(P<0.05),总抗氧化能力(total antioxidation capacity,T-AOC)活性和丙二醛(malondialdehyde,MDA)含量呈线性增加(P<0.05);胸肌过氧化氢酶(catalase,CAT)活性和MDA含量具有呈线性增加的趋势(0.05
[Objective]The aim of this experiment is to study the effects of different concentration of ammonia on the antioxidant capacity and the meat quality of broiler chickens.[Method] The study has adopted a single factor completely randomized design.A total of 400 21-day-old Arbor Acres（AA） male broilers were randomly divided into 4 respiratory chambers,and each chamber was a treatment with 4 replicates,and 25 broilers in each replicate.The following concentrations of ammonia were set in different groups：〈3 mg·kg^-1（control group）,（25±3）,（50±3）,（75±3） mg·kg^-1 respectively.The respiratory chambers controlled the environment with full-automation.The entire experimental period was 21 days：the starter phase was 21-31 d,and the later phase was 32-42 d.Broilers were provided ad libitum access to feed and water in nets.The antioxidant capacity of blood and muscle,and meat quality were determined at 32 d and 42 d of age.[Result]（1） Antioxidant capacity：At 21-31 d of age,with ammonia concentration increasing,the activity of SOD showed a quadratic increase（P〈0.05）,and the activity of T-AOC（total antioxidation capacity） and the content of MDA（malondialdehyde） showed a linear increase（P〈0.05） in serum.The activity of CAT（catalase） and the content of MDA in the breast muscle showed a linear increase trend（0.05〈P〈0.10）,and the activity of T-AOC showed a linear decrease（P〈0.05） in breast muscle.The activity of T-AOC showed a linear increase trend（0.05〈P〈0.10） in thigh muscle of broilers,and the activity of SOD（superoxide dismutase） of broilers in 75 mg·kg^-1 group was higher than in others（P〈0.05）.The activity of CAT in liver showed a linear decrease trend（0.05〈P〈0.10）,the content of MDA showed a linear increase（P〈0.05）.At 32-42 d of age,with ammonia concentration increasing,the activity of GSH-Px（glutathione peroxidase） showed a quadratic decrease（P〈0.05）,and the activity of CAT showed a linear decrease in serum of
关 键 词：
氨气
抗氧化
肉品质
肉鸡
领 域：
[农业科学]
[农业科学]
