The Qiu Pei technique of "Four Home Fish" broodstock

(I) Qiu Pei technology for broodstock and grass carp
1. Feeding: The water temperature is suitable in autumn, which is the season when grass carp and herring eat more food. Throughout the autumn, the feeding principle of “concentrate-based, refined-coarse” should be adopted. Grass carp broodstock should be fed daily dry weight concentrates such as wheat and soybean cake. After 2 days, feed green feed 1 time, and the amount of each feed was about 20% of the broiler weight. Herring broodstock is mainly fed with snails, clams, and oysters, supplemented with bean cakes.
2, adjust the water quality: autumn grass carp, herring food intake, frequent activities, water quality is easy to aging, in the event of rainy and hot weather will also cause lack of oxygen floating head. Therefore, always add fresh water to the pond to keep it fresh. In conditional ponds, aerators should be installed, and oxygen should be turned on when necessary to increase dissolved oxygen in the water, improve water quality, and facilitate the development of gonads in broodstock.
3, prevention and treatment: autumn grass carp, herring prone to enteritis, gills, red skin and other diseases. First of all, we must do a good job of prevention work. Disinfect the body of water with quicklime, strong chlorine, etc.; second is not to feed moldy feed, and feed the green material after disinfection with bleaching powder. If broodstock is found to be ill, it should be diagnosed with drought and treated symptomatically.
(II) Qiu Pei technique of brooding and brooding
1. Fertilizer: In the fall, organic fertilizer should be regularly applied. In the main pond for raising fish, the ratio of organic fertilizer is: 70% of human feces and 30% of pig cow dung; the ponds of the main breeding ponds, the ratio of organic fertilizers is: 70% of pig cow dung and 30% of human dung. The number and number of shots should be based on the pond's fatness, weather changes, broodstock activity, and more. The general principle is to keep the water dark brown with a transparency of about 20 cm. When necessary, add powdered feed for broodstock to accumulate fat and ensure normal development of gonads.
2. Adjust water quality: In the fall, you should often inject new water into the pond. To maintain the fertility and tenderness of the water body, fill the pond water in late autumn. With conditional ponds, install oxygen aerators to increase oxygen and prevent broodstock from being depleted due to lack of oxygen. .
3, fish disease epidemic prevention: crickets, crickets broodstock fall susceptible to parasitic diseases, such as anchor head lice and fish urine, etc., can use conventional pesticides and other drugs to prevent parasitic diseases.