Doing well before laying seedlings to reduce the pool casualties
2020-06-07 05:17:44
Through the practice of freshwater aquaculture in recent years, the authors found that under the same conditions, when the feed was not fed before the pool, the proportion of casualties was much higher than that before the sub-pool. This year, Xingyang Company of the Sheyang Salt Field in Jiangsu Province has seen a large area of ​​dead seedlings since its entry into the pool in March. The high average daily mortality in a single pond is not less than 1,000, and the number of deaths in many ponds exceeds 10,000. The cause of death is mostly erythroderma, and hydromycosis and other symptoms are rare. According to the analysis, the main reason for the occurrence of lesions in the seedlings is the decline of their own immunity. Therefore, I believe that feeding before the sub-pool is the main cause of seedling injury.
In aquaculture, people are accustomed to not feeding feeds for a long period of time before seedlings are subdivided, so that seedlings do not get nutrient supply, which weakens the functions of the intestines and their constitutions decline rapidly, and their own immunity is greatly weakened. In addition, the degree of harm to the seedlings will naturally increase greatly when the drug is sterilized during transport and before entering the pool, and the new water body is strongly stimulated. In addition, due to the shortage of seed and soaring prices in recent years, farmers have reduced the requirements for seed quality when purchasing seedlings, and some farmers have reduced the cost of transportation. Significantly increased, these have exacerbated the damage and death of the seed.
The author's suggestion is to get rid of the old thinking mode and change the long-established farming habits. Before the seedlings can be divided into pools, we must insist on feeding the feeds properly to enhance the seedlings' constitution and increase the self-immune immunity of the seedlings. At the same time, reduce the amount of bicycle traffic, pay attention to the cultivation of a certain amount of live food in front of the pool of fish, can reduce the death of fish after the pool.
In aquaculture, people are accustomed to not feeding feeds for a long period of time before seedlings are subdivided, so that seedlings do not get nutrient supply, which weakens the functions of the intestines and their constitutions decline rapidly, and their own immunity is greatly weakened. In addition, the degree of harm to the seedlings will naturally increase greatly when the drug is sterilized during transport and before entering the pool, and the new water body is strongly stimulated. In addition, due to the shortage of seed and soaring prices in recent years, farmers have reduced the requirements for seed quality when purchasing seedlings, and some farmers have reduced the cost of transportation. Significantly increased, these have exacerbated the damage and death of the seed.
The author's suggestion is to get rid of the old thinking mode and change the long-established farming habits. Before the seedlings can be divided into pools, we must insist on feeding the feeds properly to enhance the seedlings' constitution and increase the self-immune immunity of the seedlings. At the same time, reduce the amount of bicycle traffic, pay attention to the cultivation of a certain amount of live food in front of the pool of fish, can reduce the death of fish after the pool.
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