To overcome this potential problem, many procedures mix pigs from different breeding units - know as co-mingling.
为了克服这个潜在的问题，多将来自不同繁殖群的仔猪混养在一起，称为共同混合。
To overcome this potential problem, many procedures mix pigs from different breeding units - know as co-mingling.
为了克服这个潜在的问题，多将来自不同繁殖群的仔猪混养在一起，称为共同混合。
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