Abstract: This experiment was conducted to study the effects of dietary manganese methionine (Mn-Met) on performance, egg quality and serum biochemical parameters of laying hens.

摘要本试验旨在研究饲粮添加蛋氨酸锰对蛋鸡生产性能、蛋品质及血清生化指标的影响。

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This study was conducted to investigate the effects of lysine (Lys), methionine (Met) and threonine (Thr) supplementation on growth performance and serum biochemical parameters of calves.

本试验旨在研究赖氨酸、蛋氨酸和苏氨酸对犊牛生长性能和血清生化指标的影响。

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Methods:The parameters of serum lipid metabolism were detected by full automatic biochemical instrument.

方法：血清脂代谢指标在全自动生化仪上完成。

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