以下为句子列表：
英文: A single-factor experiment was designed to research the effect of nutrition level on body weight of multiparous sows during gestation through investigating the effect of gestation nutrition on the reproduction performance of multiparous sows in subsequent
中文: 摘要采用单因子试验设计，通过对妊娠期不同营养水平连续3胎经产母猪生产的研究，建立妊娠期采食量与泌乳损失及繁殖性能等之间关系的回归方程，研究妊娠期不同营养水平对经产母猪体重变化的影响。
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英文: After tracking 957 litters from 353 sows, the scientists discovered that sows in the hoop barns gave birth to more live pigs per litter than those in gestation stalls.
中文: 通过对353头母猪957窝猪的跟踪，研究者发现，大群饲养的母猪窝产活仔数更多。
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英文: All these babies were less than 1300 gms in birth weight or under 32 weeks in gestation ages.
中文: 他们大多为出生体重小于1300公克或怀孕周数少于32周之早产儿。
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英文: Article 15 Medical and health institutions shall give medical advice to the pregnant women who are suffering from serious illness or are exposed to teratogenic substances, if their gestation may jeopardize the safety of their lives, or seriously affect th
中文: 第十五条对患严重疾病或者接触致畸物质，妊娠可能危及孕妇生命安全或者可能严重影响孕妇健康和胎儿正常发育的，医疗保健机构应当予以医学指导。
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英文: Article 19 Termination of gestation or performance of ligation operations practised in accordance with the provisions of this Law shall be subject to the consent and signing of the person per se.
中文: 第十九条依照本法规定施行终止妊娠或者结扎手术，应当经本人同意，并签署意见。
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