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| 组群交配 | |||
| 组群繁育在小动物(如家禽)育种中常采用的方法，即以8~10 只母鸡与1只公鸡作为繁育的单位 | |||
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group breeding : 6 phrases in 3 subjects |
| Agriculture | 1 |
| Animal husbandry | 3 |
| Reproductive biology | 2 |
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