Adding 0.15% DL-methionine and 0.225% DL-2-hydroxy-4-methylthio butanoic acid in feed made the best effect on the laying performance and egg shell thickness of laying hens.
添加0.15%的DL-蛋氨酸和0.225%的蛋氨酸羟基类似物对蛋鸡的生产性能和蛋壳厚度的影响效果最好。
参考来源 - 低温下蛋氨酸及其羟基类似物对蛋鸡生产性能及蛋品质的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
In this paper, the effects of sodium humate on laying performance 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。
Abstract : This experiment was conducted to investigate the effects of dietary non-phytin phosphorus (NPP) level on laying performance, egg quality and tibia indices of ducks during the laying peak.
胫骨密度和骨矿物含量反映了其骨质量状况，是对磷水平较为敏感的指标，若钙磷不足，会导致蛋禽的骨质疏松症。
The effect of allicin on performance and caecum microorganism and serum biochemical index in laying hens was determined.
研究不同水平大蒜素对蛋鸡生产性能、盲肠微生物和血清生化指标的影响。
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