低温下蛋氨酸及其羟基类似物对蛋鸡生产性能及蛋品质的影响

Influence of methionine and its hydroxy anologus on laying performance and protein of layer in low temperature

在低温(5℃)的条件下,通过向饲料中添加DL-蛋氨酸(DLM)和蛋氨酸羟基类似物(LMA),考察不同蛋氨酸对产蛋高峰期海兰褐蛋鸡生产性能及蛋品质的影响。结果表明:低温(5℃)条件下,饲料中添加蛋氨酸可以缓解低温对蛋鸡造成的不利影响,蛋鸡体重降低缓慢,与对照组相比,产蛋率、平均蛋重和日蛋重显著提高,采食量和料蛋比显著降低。对蛋鸡的输卵管长度指数、重量指数没有显著影响。添加0.15%的DL-蛋氨酸和0.225%的蛋氨酸羟基类似物对蛋鸡的生产性能和蛋壳厚度的影响效果最好。

The experiment was conducted to study the influence of different kinds of methionine on performance and egg quality of 34 weeks old highland brown laying hens, through adding DL-methionine （DLM） and DL-2-hydroxy-4-methyhhio butanoic acid （LMA） in feed, under the condition of low temperature （5℃） in Chicken house. The results showed that under the condition of low temperature （5℃）, adding methionine in feed can alleviate the low temperature the adverse laying hens effect and also contribute to the growth of the chicken body weight slowly, significant increasing of laying rate, average egg weight and daily average egg weight, and obvious reduce of feed/egg ratio. It had no apparent effect on fallopian tube length parameter and weight parameter of laying hens. Adding 0.15% DL-methionine and 0.225% DL-2-hydroxy-4-methyhhio butanoic acid in feed made the best effect on the laying performance and egg shell thickness of laying hens.