Culture technique of Oncomelania hupensis

Oncomelania hupensis, also known as apple snail, originating from the Armenson River, is one of the invasive species in China. It is very large, adaptable, grows very fast, has strong reproductive ability, and is easy to produce high yield. But the meat taste is not good, so the edible value is low, mainly used for raising other aquatic feed, let's take a look at its breeding technology.

1. Preparation of breeding site

The breeding site can choose a suitable pond, and the area does not need to be too large, 3-5 mu or a few square meters, requiring fresh water quality and adequate water resources. If the water depth is less than 1 meter, planting aquatic plants, such as duckweed or algae, on the surface of the water during breeding can not only provide a summer and light shelter living environment for the snail, but also provide natural feed and reduce feed costs. the area of aquatic plants should not be too large, accounting for about 1/3 of the whole water surface, which is counterproductive. In order to facilitate management, bamboo poles can be used to encircle the water surface into several areas, and bamboo poles can also become a spawning site for female snails. Many fish will be fed with young snails, and the ponds should be cleared before breeding, while filters should be placed at drainage and water intakes, one is to mix with other fish, and the other is to prevent snails from escaping.

2. Release seedlings

Seedling release should be carried out in a planned way according to water quality, bait and management conditions. generally speaking, newly hatched snails can release about 5000 snails per square meter, while half a month after growth, the young snails weighing 2-3 grams will be stocked 2000-3000 snails per square meter. According to this proportion, with the continuous growth of snails, the culture density can be gradually reduced, and the culture density can be reduced gradually according to the density of 5000 snails per square meter, and can also be stocked according to adult specifications and caught together with the growth. When stocking, the snails should be reared in groups according to the same growth specifications, so that their food intake is the same and it is convenient for feeding and management.

3. Bait feeding

If you want to raise the snail quickly and well, the selection and feeding amount of this bait is very important. Generally, the daily feeding amount is 1/10 of the body weight of the snail, and the feeding amount gradually increases with its growth. The bait should also be a combination of coarse and fine food, fresh and non-decay, and general green fodder and fine feeding should be fed together. Concentrate feeding accounts for 0.5% of the body weight of Fushu snail. When feeding, the green feed should be fed first, and after the green fodder is finished, fine feeding should be given, which is conducive to nutrition accumulation and promote the growth of snails and increase their weight. In addition, Fushou snails avoid direct sunlight, so the feeding time should also be paid attention to. Fushou snails sink into the water during the day and come out to feed at night, so the best time to feed is in the evening.

4. Water quality management

Oncomelania hupensis will grow very fast as long as the bait is sufficient, so if you eat more, you will pull more. a large amount of feces will lead to continuous deterioration of water quality, which can easily lead to diseases, affect the growth of snails or cause death. therefore, the management of water quality is very important in culture. In order to ensure its healthy growth, the water should be changed frequently to keep the water fresh. The water should be changed once in 7-10 days in the still water environment and 20-30 days in the micro-running water environment.

The above is the Fushou snail culture technology brought by the pro-agricultural network. I hope it can help you. If you want to know more about it, please pay attention to the pro-agricultural network.