条件筛选
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As of the end of July, 10.5% of the nation's grandparent chickens had been culled
As of the end of July, the nationwide grandparent chicken reduction work advocated by the China White Feather Broiler Alliance had been successfully completed. Grandparent chicken enterprises actively responded to the call and culled their grandparent chicken stocks proportionally. Most enterprises exceeded their targets, with the total reduction accounting for 10