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亲鱼(俗称种鱼)是用于繁殖的雌鱼和雄鱼。春季天气转暖,水温上升,亲鱼摄食量逐渐增大,亲鱼性腺也加快发育。要创造适宜亲鱼生活的生态条件。开春后,当水温达12℃以上时,亲鱼摄食量增加,性腺由原来的Ⅱ—Ⅲ期进入Ⅳ期;4月上、中旬水温继续上升到17—20℃以上时,性腺发育更快,向着Ⅵ期未过渡,摄食量也大为增加。为此,必须把握时机。抓住有利季节进行强化培育,以适应性腺发育需要。鲢、鳙鱼池可多施肥料,促使水质迅速转肥,如池水清淡长期不转肥,可注入少量新水,翻揽池边的堆肥,也可适当增加商品饲料用量。在接近亲鱼成熟期,应适当调节水质,定期注入新水,补给氧气。
Broodstock (commonly known as species of fish) is used to breed females and males. The spring weather is getting warmer, the water temperature rises, the food intake of broodstock gradually increases, and the progenitor gonads also accelerate their development. To create a suitable ecological conditions broodstock life. After the spring, when the water temperature reaches above 12 ℃, the feed intake of the broodstock increases, and the gonads enter the stage Ⅳ from the original stage Ⅱ-Ⅲ. When the water temperature continues to rise above 17-20 ℃ in April and mid-April, the gonadal development is faster, Phase VI did not transition, food intake also greatly increased. To this end, we must seize the opportunity. Seize the favorable season for intensive breeding to adapt to gonadal development needs. Silver carp and bighead carp can use more fertilizers to promote water quality to turn fertilizer quickly. If the water is light and long, it will not turn into fertilizer, but a small amount of new water can be injected and the composting beside the pool can also be injected. The amount of commercial feed can also be appropriately increased. Close to the maturity of broodstock, water quality should be properly adjusted, regular injection of fresh water, oxygen supply.