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自家鱼人工繁殖获得成功以来,我国淡水养殖业的发展速度很快。但随之而来的是鱼苗需要量逐年增加,同时出现了催产用的鱼脑垂体和绒毛膜促性腺激素(HCG)供
Since the success of its own fish artificial propagation, the development of freshwater aquaculture in China is growing rapidly. However, the consequent increase in fish fry demand and the emergence of fish pituitary and chorionic gonadotropin (HCG) for oxytocin