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首页> 外文期刊>Indian Journal of Poultry Science >Studies on production performance of layers supplemented with dietary melatonin
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Studies on production performance of layers supplemented with dietary melatonin

机译：日粮补充褪黑激素的蛋鸡生产性能研究

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Twenty four layer birds of 24 weeks were randomly assigned to three groups of eight birds in each. Melatonin was added to feed @ 2mg./Kg (M-I) and 8mg./Kg.(M-II) for the period of 3 weeks . Third group was left unsupplemented as control. The birds were raised on continuous lighting, feed and water was available ad lib. Heperinized blood was collected from all the groups at the end of third week for hematological and biochemical profiles. Similarly eggs were also collected to analyze the parameters viz. egg weight, egg volume, albumin and yolk volume, egg shell weight and thickness. Melatonin supplementation in layer birds resulted in increase in egg parameters except egg production, which was decreased significantly in both the supplemented groups.Only slight variations were observed in hematological parameters with an increase in hemoglobin percentage, number of heterophils, basophils, monocytes and decrease in packed cell volume, total erythrocyte count and eosinophils count. The level of bloodglucose and total protein increased significantly in the group M-I as compared to M-II and control groups. In contrary, declining trend was observed in the levels of calcium and phosphorus in both the supplemented groups. It may be concluded that melatonin supplementation at 2.0 mg/kg feed improves the egg weight, egg volume, albumen and yolk volume, egg shell weight and thickness. The level of blood glucose and total protein increased significantly in treated groups.
机译：将24周的二十四层鸡随机分为三组，每组八只鸡。将褪黑激素以2mg / Kg（M-I）和8mg./Kg.(M-II）的饲料添加3周。第三组不补充作为对照。鸟类在连续照明下饲养，可随意喂食和饮水。在第三周结束时从所有组中收集肝素化血液以进行血液学和生化分析。类似地，还收集了鸡蛋以分析参数。蛋重，蛋量，白蛋白和蛋黄量，蛋壳重量和厚度。在蛋鸡中补充褪黑激素会导致除产蛋量以外的所有产蛋参数增加，这两个补充组均明显下降。血液学参数仅观察到轻微变化，其中血红蛋白百分比增加，嗜异性粒细胞，嗜碱性粒细胞，单核细胞数量增加，而填充细胞体积，总红细胞数和嗜酸性粒细胞数。与M-II和对照组相比，M-I组的血糖和总蛋白水平显着增加。相反，在两个补充组中观察到钙和磷水平下降的趋势。可以得出结论，以2.0 mg / kg饲料补充褪黑激素可以改善蛋重，蛋量，蛋白和蛋黄量，蛋壳重量和厚度。治疗组的血糖和总蛋白水平显着增加。

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