In this paper, the effects of sodium humate on layingperformance of Nick(Parent Stock) egg genus chicken aged 48 weeks was studied.
为研究腐植酸钠对蛋种鸡生产性能的影响,选用48周龄尼克红父母代蛋鸡进行试验。
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Abstract : This experiment was conducted to investigate the effects of dietary non-phytin phosphorus (NPP) level on layingperformance, egg quality and tibia indices of ducks during the laying peak.