林下轮牧放养对优质肉鸡屠体性状及肉品质的影响  

Effects of Rotational Grazing on Carcass Traits and Meat Quality in Quality Chicken

作　　者：姜娜[1] 孟虹艳[2] 李志刚[2] 高宏巍[2] 安渊[2] 孟和[2] 罗玉柱[1] 

机构地区：[1]甘肃农业大学动物科技学院,甘肃兰州730070 [2]上海交通大学农业与生物学院,上海200240

出　　处：《中国家禽》2008年第8期34-36,40,共4页China Poultry

基　　金：上海市科委2006年度“登山行动计划”项目崇明生态岛建设科技专项资助(06DZ19131)

摘　　要：试验检测分析了林下轮牧放养模式下岭南黄羽肉鸡的屠体性状、肉品质及脂类代谢相关血液生化指标,结果显示,试验组半净膛率、全净膛率极显著高于对照组(P<0.01),屠宰率、腿比率、肌胃率均优于散养鸡(P>0.05),腹脂率降低12.2%(P>0.05);试验组胸肌肉色亮度值比对照组提高11.2%(P<0.01),红度值、黄度值无显著差异;胸肌蛋白含量比对照组提高2.3%(P<0.01),脂肪含量提高11.1%(P<0.05),水分含量无显著差异(P>0.05);试验组血清TC水平比对照组降低35.9%(P<0.01),TG、LDL-C、HDL-C无显著差异。试验结果表明,林下种植牧草环境下轮牧放养,可显著提高优质肉鸡屠宰性能,改善肌肉品质,调节脂类代谢,值得进一步研究和推广。Thirty-day-age Lingnan yellow broilers were used to study the effects of rotational grazing pattern with legume herbage （alfalfa and chicory） and free-range pattern without planting herbage on carcass traits and meat quality. The results showed that the semi-eviscerated percentage and eviscerated percentage in rotational grazing group were higher than free-range group （P〈0.01）,slaughter percentage,thigh percentage and gizzard percentage were better than those of free-range chickens （P〉0.05）,abdominal fat percentage decreased by 12.2%（P〉0.05）. The breast muscle of the lightness in rotational grazing group was raised 11.2%（P〈0.01）,there was no significant difference in redness and yellowness between two groups,the content of protein in breast muscle were raised 2.3%（P〈0.01）,lipid content were raised 11.1%（P〈0.05）,water content had no difference between two groups （P 〉0.05 ） ;the level of serum TC was significantly lower than that of free-range group（P〈0.01）,there was no significant difference in TG、LDL-C、HDL-C level. The results indeated rotational grazing in the woodland with planting forage could efficiently promote growth and development,improve carcass traits and meat quality in chickens.

关 键 词：林下种植牧草 轮牧放养 优质肉鸡 屠体性状 肌肉品质 

分 类 号：S964.3[农业科学—水产养殖] S828.2[农业科学—水产科学]