| 日粮添加过瘤胃赖氨酸对利木赞杂交肉牛胴体性状和肉质的影响 |
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| 引用本文： | 薛丰,郭晓旭,郭望山,任丽萍,孟庆翔. 日粮添加过瘤胃赖氨酸对利木赞杂交肉牛胴体性状和肉质的影响[J]. 中国农业大学学报, 2010, 15(4): 82-86 |
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| 作者姓名： | 薛丰 郭晓旭 郭望山 任丽萍 孟庆翔 |
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| 作者单位： | 动物营养学国家重点实验室,北京,100193;中国农业大学,动物科技学院/肉牛研究中心,北京,100193 |
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| 基金项目： | 国家科技支撑计划子课题资助项目 |
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| 摘 要： | 研究添加过瘤胃赖氨酸对肉牛胴体品质及肉质性状的影响.选用24头利木赞F1杂交公牛分别饲喂添加不同含量的过瘤胃赖氨酸(0、5、10和15 g/d)的日粮.饲喂14周后全部屠宰,测定胴体品质和肉质性状相关指标.结果显示:随着赖氨酸添加量的增加,背膘厚呈线性降低(Y=-0.016X+0.585),其中15 g/d赖氨酸纽显著低于对照组(P<0.05).日粮中过瘤胃赖氨酸的添加量对肌肉肉色b*(P=0.048)产生二次曲线规律的影响.15g/d赖氨酸组的滴水损失和肉样蛋白质的含量显著高于对照组(P<0.05).随着赖氨酸添加量的增加肉样中天冬氨酸(Y=0.015 2X+7.831)和异亮氨酸(y=0.008 4X+4.317)含量呈线性升高,但其他氨基酸含量、必需氨基酸、非必需氨基酸及总氨基酸的含量没有显著变化.结果表明,在低赖氨酸日粮中补充适量的赖氨酸,可以降低肉牛背膘厚,增强肉质中蛋白质的合成,同时也会降低牛肉的系水力,但对其他肉质形状没有影响.
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| 关 键 词： | 肉牛 过瘤胃赖氨酸 胴体品质 肉质性状 背膘厚 氨基酸 |
| 收稿时间： | 2009-12-03 |
Effect of dietary rumen-protected lysine supplementation levelon carcass characteristics and meat quality ofLimousin crossbred beef cattle |
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| XUE Feng,GUO Xiao-xu,GUO Wang-shan,REN Li-ping and MENG Qing-xiang. Effect of dietary rumen-protected lysine supplementation levelon carcass characteristics and meat quality ofLimousin crossbred beef cattle[J]. Journal of China Agricultural University, 2010, 15(4): 82-86 |
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| Authors: | XUE Feng GUO Xiao-xu GUO Wang-shan REN Li-ping MENG Qing-xiang |
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| Affiliation: | State Key Laboratory of Animal Nutrition,Beijing 100193,China;College of Animal Science and Technology/Beef Cattle Research Center,China Agricultural University,Beijing 100193,China;State Key Laboratory of Animal Nutrition,Beijing 100193,China;College of Animal Science and Technology/Beef Cattle Research Center,China Agricultural University,Beijing 100193,China;State Key Laboratory of Animal Nutrition,Beijing 100193,China;College of Animal Science and Technology/Beef Cattle Research Center,China Agricultural University,Beijing 100193,China;State Key Laboratory of Animal Nutrition,Beijing 100193,China;College of Animal Science and Technology/Beef Cattle Research Center,China Agricultural University,Beijing 100193,China;State Key Laboratory of Animal Nutrition,Beijing 100193,China;College of Animal Science and Technology/Beef Cattle Research Center,China Agricultural University,Beijing 100193,China |
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| Abstract: | |
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| Keywords: | beef cattle rumen-protected lysine carcass characteristics meat quality backfat depth amino acids |
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