以下为句子列表：
英文: 20 crossbred beef cattle were divided into 2 groups in order to study the effects of Chinese herb medicine additive on their performance and blood biochemical parameters.
中文: 摘要选用20头杂交架子牛，随机分2组，研究日粮中添加中药饲料添加剂对肉牛生产性能和血液指标的影响。
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英文: Crossbred Duroc was not better than pure ones for litter size at birth.
中文: 系间杂交公猪所配母猪的产仔数也与纯系所配母猪的产仔数相近。
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英文: From the wild varieties, they selectively propagated and crossbred individual plants possessing desirable traits, such as bigger grains or larger numbers of grains.
中文: 他们从野生种开始，选择性地繁殖和杂交具有理想性状的植物个体，像是榖粒更大或更多。
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英文: However, for litter size and litter weight at the age of 20d, crossbred Duroc mated groups appeared superior to pure ones.
中文: 但在20日龄窝仔数和窝重性状上，杂种公猪优于纯种公猪。
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英文: Intramusclar fat contents acre distinctively higher sired by crossbred Duroc than by pure animals.
中文: 台系杜洛克所配后代的胴体瘦肉率最高。
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