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水体是鱼类唯一的生存环境,水质如何,直接影响鱼类的生长发育和疾病的发生,控制水体生态条件是降低鱼类发病率的有效措施。 1.测水温定投饵量,鱼类属变温动物,其消化摄食强质与水温有紧密的联系,而鱼类发病率又往往与鱼类摄食量相关。一般说来,在适温范围内(7～32C),水温越高,鱼的摄食越强,而投草越多(尤其不坚持“四定”投饵的鱼塘),发病死鱼(主指草鱼)率越高。为此,要使鱼长快而又少发疾病,必须根据全年
Water is the only living environment of fish, water quality, directly affect the fish growth and disease development, control of ecological conditions of water is an effective measure to reduce the incidence of fish. 1. Measuring temperature Precipitation feeding, fish is a warm-blooded animal, its digestion and feeding quality and water temperature are closely linked, and the incidence of fish are often associated with the amount of fish intake. Generally speaking, in the proper temperature range (7 ~ 32C), the higher the water temperature, the stronger the feeding of the fish, and the more grass (especially the fish ponds which do not stick to the “four fixed” feeding), the dead fish That grass carp) the higher the rate. To this end, to make the fish grow faster and less disease, must be based on the year