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首页> 外文期刊>The Indian Journal of Animal Sciences >Effect of dietary mulberry leaves on performance parameters and nutrient digestibility of laying hens.
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Effect of dietary mulberry leaves on performance parameters and nutrient digestibility of laying hens.

机译：日粮桑叶对蛋鸡生产性能及养分消化率的影响。

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摘要

The purpose of this study was to investigate the effect of the dietary mulberry leaves on nutrient digestibility and layer performances. The experiment was conducted for 30 days on 105 Lohman Brown layers assigned to 3 groups (C, E1 and E2) with 35 layers/group. The experimental diets included 3% (E1) and 6% (E2) mulberry leaves. The layers had free access to the food. The feed intake, egg production, feed conversion ratio, egg mass production and egg weight were recorded; no significant difference was noticed between the 3 groups. Digestibility studies were performed on weeks 2 and 3 (5 days/week). Organic matter digestibility was significantly higher in the control group compared to the experimental groups: E1 and E2. Nitrogen free extractives significantly differed in groups too. The physical parameters of the eggs (egg weight, egg white weight, egg shell thickness, Haugh unit, egg yolk weight and egg shell weight) did not differ significantly between the groups. Yolk colour intensity was significantly higher in the experimental groups E1 and E2 compared to the control group. Use of mulberry leaves in laying hens nutrition by including into ratio up to 6% had no negative effects on breeding performances and egg quality.
机译：本研究的目的是研究日粮桑叶对养分消化率和产蛋性能的影响。在分配给35个层/组的3组（C，E1和E2）的105个Lohman Brown层上进行了30天的实验。实验饮食包括3％（E1）和6％（E2）桑叶。各层可以自由获取食物。记录采食量，产蛋量，饲料转化率，产蛋量和蛋重。 3组之间没有发现显着差异。在第2周和第3周（5天/周）进行了消化率研究。对照组中的有机物消化率明显高于实验组：E1和E2。无氮提取物在各组中也存在显着差异。鸡蛋的物理参数（蛋重，蛋清重量，蛋壳厚度，霍夫单位，蛋黄重量和蛋壳重量）在两组之间没有显着差异。与对照组相比，实验组E1和E2的蛋黄色强度显着更高。桑叶中添加比例高达6％的蛋用于母鸡营养中，对繁殖性能和蛋品质没有负面影响。

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