促进畜禽生长，提高饲料转换率。

To promote animal growth, improve feed conversion rates.

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实际上，它们的身体将饲料转换为肉、脂肪、骨、皮的效率差异可能是令人惊讶的。

In fact the difference in how efficiently their bodies convert feed into meat, fat, bone and hide might be surprising.

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试验表明不同营养配比的饲料，其饲料转换率有着较大的差异，会导致鱼体生长的显著差异。

The results show that the content of nutrition have distinct effect on feed coefficient rate and growth rate of turbot .

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