Sub optimal diets can manifest themselves via infertility, poor hatchability and weak chicks through to no breeding activity at all and in severe case disease and illness in the adults.

• 亚饮食状况可以通过不孕，低孵化率和弱雏乃至全无繁殖活动以及重症疾病和在成熟期后患上疾病等体现出来。