以下为句子列表：
英文: However , modern sows, with a leaner genotype and the superior reproductive performance we have come to expect, must be managed differently from their counterparts of 20 years ago, since they begin their reproductive life with fewer body reserves.
中文: 然而，我们现在所期盼的瘦肉型高繁殖性能的母猪，必须要与20年前的养殖管理有所区别，因为它们要用更少的体储备来实现高繁殖性能。
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英文: his study investigated the changes in reproductive performance in Yuehuang hens following termination of broodiness by use of chlopromazine (DA antagonist) and cyproheptadine (5-HT antagonist).
中文: 试验观察了利用多巴胺（ＤＡ）受体阻断剂（氯丙嗪）和／或５－羟色胺（５－ＨＴ）受体阻断剂（赛更啶）抑制母鸡就巢后繁殖性能的变化。
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英文: Reproductive Performance in Two Populations of Polygonum viviparum (Polygonaceae) under Different Habitats
中文: 不同生境下珠芽蓼(蓼科)的繁殖策略比较
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英文: prelimilary study on effect of active immunization against vasoactive intestine peptide on the reproductive performance in domestic pigeon
中文: 主动免疫血管活性肠肽(VIP)对家鸽繁殖性能影响的初探
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英文: The Infection of Fmr1 on Physiological Development and Reproductive Performance in Mice
中文: Fmr1基因敲除对小鼠生理发育和繁殖性能的影响
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