| 日粮蛋白质和赖氨酸水平对AA肉鸡生长性能及肌肉品质的影响 |
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| 引用本文： | 陈春梅,宋遥,唐茂妍,刘金华,张荣春,计成.日粮蛋白质和赖氨酸水平对AA肉鸡生长性能及肌肉品质的影响[J].中国农业大学学报,2006,11(6):55-59. |
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| 作者姓名： | 陈春梅 宋遥 唐茂妍 刘金华 张荣春 计成 |
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| 作者单位： | 1. 中国农业大学,动物科学技术学院,北京,100094
2. 山东诸城外贸集团,山东,诸城,262200 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 研究日粮不同蛋白质和赖氨酸水平对肉仔鸡生长性能和肌肉品质的影响。结果表明:1)日粮蛋白质水平增加4%,平均体重显著上升6.84%、饲料转化率显著上升7.2%(P<0.05);日粮赖氨酸水平增加0.2%,体重呈二次曲线变化,饲料转化率显著提高4.9%(P<0.05)。2)随日粮蛋白质水平增加,胸肌和腿肌剪切力值上升,即嫩度极显著下降55%(P<0.01);低蛋白质水平下随赖氨酸水平增加0.2%,宰后45 min的胸、腿肌pH显著下降4.1%、3.8%(P<0.05)。这表明生长速度与肌肉品质呈负相关。
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| 关 键 词： | 蛋白质 赖氨酸 AA肉鸡 生长性能 肌肉品质 |
| 文章编号： | 1007-4333（2006）06-0055-05 |
| 收稿时间： | 2006-01-17 |
| 修稿时间： | 2006年1月17日 |
Effects of levels of dietary protein and lysine on growth and meat quality of AA broilers |
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| Chen Chunmei,Song Yao,Tang Maoyan,Liu Jinhu,Zhang Rongchun,Ji Cheng.Effects of levels of dietary protein and lysine on growth and meat quality of AA broilers[J].Journal of China Agricultural University,2006,11(6):55-59. |
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| Authors: | Chen Chunmei Song Yao Tang Maoyan Liu Jinhu Zhang Rongchun Ji Cheng |
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| Abstract: | A total of 2?970 1-day old broiler chicks were used to study the effects of various levels of dietary protein and lysine on growth and meat quality.Results showed that: 1) when the levels of dietary protein increased by 4%,the average daily gain and feed conversion ratio improved significantly((P<)0.05) by 6.84%;there was a significant((P<)0.05) quadratic effect of dietary lysine intake on body weight gain.2) The shearing force of breast and crura increased substantially(P<0.01) by 55% indicating that the tenderness of meat decreased with the 4% increase in dietary protein.With a 2% increase in the level of dietary lysine,the post-slaughter pH of breast and crura declined((P<)0.05) by 4.1 and 3.8% at the low dietary protein level. |
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| Keywords: | protein lysine AA broiler growth performance meat quality |
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