论文部分内容阅读
青、草、鲢、鳙四大家鱼,需注射一定数量的催产剂入体内后,才能在池塘条件下进行人工繁殖;鲤、鲫、鲂等鱼注射催产剂后可提高繁殖效果。因此,合理使用催产剂是提高鱼类催产率和采精率的关键所在。 1、催产剂的种类。目前,家鱼人工催产用催产剂有三种,脑重体,即鲤、鲫鱼的脑下垂体,促黄体素释放索类似物;绒毛膜促性腺激素。垂体对鲢、鲤鱼的催产效果较为理想;激素对鲢、鳙、鲂鱼的催产效果比较好;释放素对草,青鱼的催熟或催产效果比较好;。经多年的
Green, grass, silver carp and bighead carp four big fish, need to inject a certain amount of oxytocin into the body, in order to artificial breeding pond conditions; carp, crucian carp, pomfret and other fish injection oxytocin can improve reproductive performance. Therefore, the rational use of oxytocin is the key to improve the rate of fish oxytocin and the rate of extraction. 1, the type of oxytocin. At present, there are three kinds of oxytocin for artificially producing domestic fish, including brain pituitary gland, pituitary gland of carp and crucian, luteinizing hormone-releasing analogue, and chorionic gonadotropin. The effect of pituitary on silver carp and carp was more ideal; the effect of hormone on silver carp, bighead carp and bighead carp was better; the effect of releasing hormone on ripening or oxytocin of grass and herring was better. After many years