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| 初情期; 初情期家畜开始产生配子的时期，即母畜第一次发情排卵或公畜开始产生精子的时期 | |||
| 青春期 | |||
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pubertas : 2 phrases in 2 subjects |
| Animal husbandry | 1 |
| Genetics | 1 |
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