4 new fish drugs with high efficiency
1. Perchlorine. This product is a fungicide, timely use of fish, shrimp, crab, soft-shelled turtle, eel, frog bleeding and red skin, printing, rotten Gill, black Gill, enteritis, decaying shell, red leg disease has a very good control effect. It has significant disinfection, sterilization and improvement effect on pond sediment and pond water.
2. Fish, insects and worms. This product is a new type of high-efficiency insecticidal drug, which can effectively kill the fish parasites such as Anchor head mound, Chinese mackerel, rotifer, ring worm, third generation worm, sporidium, double scale trematode, monogonimus and so on. It has obvious curative effect on common four big domestic fish, freshwater white Pomfret, mandarin fish, sea bass, eel, @ # @ 240 fish and other sea and freshwater fish caused by parasites. This product is widely used in fish, shrimp and crab mixed culture ponds.
3. Xianzhong Bike. This product is an insecticide and has a strong killing effect on ciliates, such as condensed worms, monosodium worms, pseudo-monozoites, bell worms, branch worms, cups and so on. When shrimp and crab are attached by a large number of ciliates, it can cause slow action, stagnation of development, stop eating, molting difficulty, and even death, which can be prevented and treated with this product.
4. Molting promotes the growth of treasure. This strain has high efficiency of molting growth-promoting hormone, which can promote the rapid molting and growth of shrimp and crab. Long-term use of this product has obvious preventive and therapeutic effect on spasmodic disease of shrimp, "ring leg" disease of crab, failure of molting or death after molting. In the breeding period of young crab and young shrimp, the use of this product in the early overwintering period of crab species can reduce the cannibalism of larvae and promote the synchronous metamorphosis of larvae, and the weight gain effect can be achieved during the fattening period of shrimp and crab before listing.
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The optimum protein level of fish feed
Protein is the main nutritional index of compound feed for fish. the level of protein directly affects the internal quality of fish feed. The optimal protein requirements of different fish species and growth stages are also different. Too high protein content will not only cause a waste of feed protein resources, but also increase the pressure on pond water quality management. If the protein content is too low, it will cause slow growth and poor disease resistance of fish on the one hand, and delay production on the other hand. Therefore, mastering the optimal protein level of fish feed is very important to guide fishery production.
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Main diseases and control of Pseudosciaena Crocea
1. Bacterial diseases 1. Vibrio pathogen: Vibrio parahaemolyticus. Symptoms: ulcers on the body surface of diseased fish are typical features of the disease. In the early stage of the disease, there are petechiae, ecchymosis and irregular erythema on the body surface, which are more common in the abdomen and tail. In severe cases, the lower jaw bleeding, ulcer, fin base congestion and redness, fin strip defect, caudal stalk muscle decay, the formation of hemorrhagic ulcer. The liver, spleen, kidney and intestine are congested, the liver is enlarged and yellowish mucus is found in the intestine. Microcurved bacteria could be seen in the focus tissue under microscope. Epidemic: the disease
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