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亲鱼的成熟与否,关系到催产的成败,因此,如何选择成熟的亲鱼,是整个鱼家催产环节的关键。亲鱼成熟的季节一般在四月下旬至六月上旬,当水温达20—28℃,是亲鱼成熟的高峰期。同时,亲鱼的成熟程度还取决于亲鱼的培养工作。在正常情况下,经过常年精心培育的亲鱼,到了产卵季节,雌鲢鳙鱼下腹部近生殖孔前两侧,可明显见卵巢块轮廓,而且柔软略带有弹性,生殖孔微红而松驰,稍有凸出,选择这样的亲鱼打针催产往往很顺利。若腹部看起来很饱满,手摸特别柔软,但无弹性,说明成熟不够。若腹部过份饱满,手摸非常柔软,弹性不足,有如棉絮状一样,则说明亲鱼过份成熟,难以顺利产卵。草鱼成熟的鉴别和鲢、鳙鱼有所不同,鉴别时,可将其腹部向上,如能见体则
The maturity of the broodstock is related to the success or failure of oxytocin. Therefore, how to choose a mature broodstock is the key to the entire fish catching up. Broodstock mature season is generally late April to early June, when the water temperature of 20-28 ℃, is the peak of maturing broodstock. At the same time, the maturity of broodstock also depends on the cultivation of broodstock. Under normal circumstances, after years of carefully nurtured broodstock, to the spawning season, the female and the bighead carp near the lower abdomen reproductive gland on both sides of the ovary, the outline of the ovary can be clearly seen, and slightly soft and flexible reproductive pores red and loose Chi, slightly protruding, choose such a brood injection oxytocin often very well. If the abdomen looks very full, touching the hand particularly soft, but inelastic, indicating that maturity is not enough. If the abdomen is over-full, hand touch is very soft, lack of elasticity, like a cotton-like, then the pro-fish is too mature, it is difficult to spawn. Grass carp identification and mature silver carp and bighead carp is different, identification, the abdomen can be up, as can see the body