Rainbow trout has the advantages of delicious meat, rich nutrition, less meat, rapid growth, artificial breeding and domestication. It has become one of the four major freshwater culture species promoted by the UN Food and Agriculture Organization of the United Nations.
Fish disease prevention and control is very important in rainbow trout farming, especially when high-density feeding is more prone to fish disease. The key to prevention and control lies in prevention. Here are two simple fish diseases.
Small melon worm disease: prone to larvae, many small white spots appear on the surface of the diseased fish, and a large amount of mucus is secreted on the larvae. The diseased fish is in a state of restlessness and often sideways rubs against the wall of the pool and the appetite diminishes. For treatment, dilute with 1/4000 formaldehyde solution for 1 hour, or dip in 5%-10% saline for 1 hour. Prevention methods: Pay attention to regulate and control water quality, purchase quality fish, and feed high-quality feed.
Mildew mildew: also known as saprophytic disease, occurs in eggs that are dead or damaged during hatching, and can invade neighboring good eggs. It is also easy to infect at the injured fish body. In the early stages of the disease, small spots appear, and then gradually expand into villous, so that the affected area muscles ulcerated and necrotic. The optimum temperature for the reproduction of aquatic molds is 4°C-14°C. Preventive measures: During the incubation period, attention should be paid to the removal of dead eggs. Care should be taken not to scratch the fish when pulling the net during the breeding period.
A seedbed or seedling bed is the local soil environment in which seeds are planted. Often it comprises not only the soil but also a specially prepared cold frame, hotbed or raised bed used to grow the seedlings in a controlled environment into larger young plants before transplanting them into a garden or field. A seedling bed is used to increase the number of seeds that germinate.
Greenhouse Seedling Bed,Stainless Greenhouse Seedling Bed,Greenhouse Seedling Nursery Bed
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.engreenhouse.com