Abstract: With consistent weight，60 forty-week-old breeder cocks were randomly divided into two groups including 30 cocks respectively，named A and B．Group A was treatment group，fed with basic diets supplemented with 1．5％ Chinese
herb feed additives，while Group B was the control group，only fed with basic diets to study efect of Chinese herb fed additives on semen quality and the breeding eggs of breeder cocks before and after freezing ．The results showed that Chinese herbfedadditives could obvioaslyimprovetheselTlen volume．the sperm concentrationandthe sperm abnormal ratebefore freezing (P <O．05)；and also obviously improve sperm motility and the sperm abnormal rate after freezing (P <0．05)．Compared to Group B before freezing，the fertilization rate and healthy chick rate of Group A Was enhanced by 9．1％ ，and 3．7％ ，mpectively．Compared to Group B after freezing，the fertilization rate and healthy chick rate of Group A was enhanced by 11．9％ and 5％．Therefore，it can be concluded that Chinese herbfeed additives could improve the semen quality of breeder cocks，then enhanee the fertilization rate of breeding eggs and healthy chick rate．

Key words: Chinese herbs, semen quality, fertilization rate, healthy chick rate