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池塘实行测水饲养法养鱼,是降低鱼类发病率的有效措施,其具体方法是: 1、测水温定投饵量鱼类属变温动物,其消化摄食强度与水温有紧密的关系,鱼类发病率往往与鱼类摄食量紧紧相连,一般说来,在适温范围内(7—32℃)水温越高,鱼的摄食越强;而投草越多(尤其是不坚持“四定”投饵的塘)发病死鱼率(主指草鱼)越高。为此,要使鱼长快而又发病少,必须根据全年水温升降规律来严格确定鱼塘日投草量,使鱼吃好快长,具体是:早春时节,当水温上升到7℃以上时。就必须用商品饲料,鲜嫩青草喂鱼,每天一次,每次喂量首先为当日存塘草、鳊等吃食鱼体重的8～5％。
Pond aquaculture water method is an effective measure to reduce the incidence of fish, and its specific methods are: 1, the water temperature to determine the feeding amount of fish is a variable temperature animal, its digestion and feeding intensity and water temperature are closely related to the fish The incidence is often closely linked with the fish food intake, in general, the higher the water temperature in the appropriate temperature range (7-32 ℃), the stronger the fish feeding; and the more grass (especially not to “four fixed ”Feeding ponds) the incidence of dead fish (grass finger fish) the higher. To this end, to make the fish grow faster and less disease, we must strictly according to the law of the annual temperature rise and fall of fish ponds to vote, make the fish eat fast, specifically: early spring season, when the water temperature rose to above 7 ℃ Time. It is necessary to use commodity feed, fresh grass to feed the fish once a day, the first volume of feed for the day to save ponds, 鳊 and other eating fish body weight of 8 to 5%.