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一、试验目的银鲴是我地广泛饲养的一种优良品种,养殖银鲴的历史悠久。由1965年人工繁殖成功以来,鱼苗产量逐年增多,现在我县每年繁殖银鲴鱼苗4亿尾,占鱼苗总繁殖量的三分之一。银鲴鱼苗生产量大,催产剂需要也多,使用垂体能获得较好的催产效果,但在较高水温下催产效果差,供应上也有一定的困难,使用LRH—A_2催产在低温情况下效应时间长,产卵不整齐。为了解决这些矛盾,今年我们利用RES加LRH—A_2(宁波激
First, the purpose of the experiment Silver 鲴 is a fine breed that I widely reared, breeding silver 鲴 has a long history. Since the success of artificial breeding in 1965, fry production has increased year by year, and now my county breeds silverfishes 400 million per year, accounting for one third of the total breeding fry. Silver mullet fry production capacity, the need for oxytocin more, the use of the pituitary to obtain better effect of oxytocin, but at higher water temperature poor oxytocin production, there are also some difficulties in the supply, the use of LRH-A 2 oxytocin in the case of low temperature effects A long time, spawning irregular. In order to solve these contradictions, this year we use RES plus LRH-A_2 (Ningbo shock