Feather pecking was increased with the increase of stocking density.

随着饲养密度的增加，动物的啄羽行为发生率随之增高。

Appropriate stocking density and better feed management must be applied to improve the productivity performance of tiger grouper farming.

适当的放养密度与较好的饲育管理必定会有效提升饲育生产力的表现。