爸爸，我需要记住一个关于植物繁殖周期的单元。
Dad, I need to memorize a unit about the reproductive cycle of plants.
尽量早期断奶对怎样饲喂和管理母猪也有影响，许多养殖者已经开始了多点繁殖，母猪单元也正在扩大。
The move to earlier weaning also has implications for how sows are fed and managed, as does the fact that many producers have moved to multi-site production and swine units are getting bigger.
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