本试验发现雄禽比雌禽易感，发病率高。

The morbidity and mortality rates of male poultry were higher than that of female one.

youdao

但是雌禽通过排出它认为社会地位低下雄禽的遗传物质，设法保留了对父亲身份的控制。

But by removing the genetic material of males they consider socially inferior, the hens have managed to retain control of paternity.

youdao

但是雌禽通过排出它认为社会地位低下雄禽的遗传物质，设法保留了对父亲身份的控制。

But by removing the genetic material of males they consider socially inferior, the hens have managed to retain control of paternity.

youdao