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蛋氨酸硒对大恒肉种鸡繁殖性能的影响

DOI: 10.3969/j.issn.1006-267x.2014.11.030

Keywords: 蛋氨酸硒,肉种鸡,繁殖性能

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Abstract:

本试验旨在研究不同水平蛋氨酸硒对大恒肉种鸡繁殖性能的影响。将500只32周龄大恒肉种鸡随机分成5组(每组5个重复,每个重复20只)。对照组饲粮为基础饲粮,试验组饲粮为在基础饲粮中分别添加0.10、0.25、0.40和0.55mg/kg硒(蛋氨酸硒)的试验饲粮,试验期6周。结果表明:1)对照组入孵蛋受精率显著低于0.40mg/kg硒组(P<0.05),极显著低于0.10和0.25mg/kg硒组(P<0.01);对照组入孵蛋孵化率极显著低于各加硒组(P<0.01);对照组和0.40mg/kg硒组受精蛋孵化率显著低于0.10mg/kg硒组(P<0.05)。2)0.10mg/kg硒组血浆孕酮水平显著高于对照组和0.40mg/kg硒组(P<0.05);0.10mg/kg硒组种蛋哈氏单位显著高于0.55mg/kg硒组(P<0.05)。3)各组产蛋性能,血浆雌二醇水平,种蛋蛋形指数、蛋壳厚度和蛋壳强度差异均不显著(P>0.05)。由此可见,在硒水平为0.12mg/kg的基础饲粮中,添加0.10~0.55mg/kg蛋氨酸硒来源的硒对大恒肉种鸡产蛋性能没有显著影响,添加0.10~0.25mg/kg蛋氨酸硒来源的硒可显著改善大恒肉种鸡种蛋孵化性能。

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