“自由采食”常见的英文表达是 “free access to feed” 或 “ad libitum feeding”(“ad libitum”也可写作“ad lib” ,是拉丁语短语,意为“随意地;自由地”,在专业语境中常用于描述动物可自由获取食物或水的状态 )。
例如:
The pigs were given free access to feed throughout the day.(这些猪全天可以自由采食。)
In this experiment, the chickens were raised under ad libitum feeding conditions.(在这个实验中,鸡是在自由采食的条件下饲养的。 )