The fry breeding season is about to begin, and for farmers, raising healthy and strong fry is the key to ensuring a year's worth of income. Fish fry are in the critical period of growth and development, need to take in enough nutrients, and at the same time have limited ability to adapt to changes in the external environment, and are easily affected by factors such as water quality and temperature, so they need to be carefully managed from the period of seedling.
1.Waterproof mold.
Hydromould is one of the most common diseases in spring fry, which is mainly caused by deterioration of water quality or injury to the fish. To effectively prevent water mold, farmers need to strengthen water quality monitoring, regularly replace water bodies, and keep water quality clean and stable. At the same time, care should be taken in the process of fishing, transportation, stocking and other operations to avoid damage to the fish body. Once a fish is found to be infected with water mold, isolation measures should be taken in time and the diseased fish should be carried out**. The water mold is about to explode!Prevention and control need to start from low temperatures2Pest control.
Pest pests are a major hidden danger affecting the healthy growth of fish fry. Farmers should regularly check the growth of fish fry, and find and deal with pest problems in a timely manner. In terms of pest prevention, a combination of biological and chemical control methods can be adopted. Biological control involves the use of beneficial microorganisms to regulate water quality and inhibit the reproduction of harmful bacteriaChemical control is the use of drugs when necessary. However, it is necessary to pay attention to the dosage and use of the drug to avoid causing harm to the fry.
3.Choose the opening material.
The growth of fry requires adequate nutrients such as proteins, fats, vitamins and minerals. Farmers should choose high-quality feed and feed it reasonably according to the growth stage and feeding habits of the fry. The amount of feed should be appropriate, avoiding over- or under-feeding to ensure that the fry receive adequate nutrition. At the same time, attention should be paid to the quality and freshness of the feed to avoid feed spoilage or expired use.
4.Control water quality and water temperature.
Water quality and water temperature are important factors affecting the growth of fish fry. Farmers should monitor water quality indicators in real time, such as pH value, dissolved oxygen level, ammonia nitrogen and nitrite, etc., to ensure that the water quality meets the requirements of aquaculture. Control the water temperature reasonably according to the season and weather conditions to avoid the adverse effects of too high or too low water temperature on the fry. At the same time, regular replacement of water bodies, removal of pond silt and enhanced water purification are also key measures to maintain good water quality. Aquaculture water is also skillful and knowledgeable!
Xiaoyiyun Aquaculture ** Water Quality Monitoring System 5Pull net exercise.
Pulling net exercise is an effective measure to improve the adaptability and survival rate of fry. By pulling the net exercise, the physique and resistance of the fry can be enhanced, and their disease resistance can be improved. Before pulling the net, make sure that the water quality and fish are in good health;In the process of pulling the net, care should be taken to avoid causing damage to the fish body;After pulling the net, water quality management and disease prevention should be strengthened to ensure the healthy growth of fish fry.
6.Reasonable breeding density.
Excessive stocking density can lead to problems such as slow growth of fry and frequent diseases. Therefore, farmers should reasonably arrange the breeding density according to factors such as the species, size and pond conditions of the fry. At the same time, in the process of breeding, the pond should be divided in a timely manner, and the breeding density should be adjusted to ensure that the fry have enough growth space and a good living environment.