One of the biological characteristics of the pond lice fish
The pond lice fish is a kind of shade fear of the sun, living in groups of benthic, in order to feed on animal feed-based omnivorous fish. In natural waters, it is often small fish and shrimp in the water, insects and other animal carcasses as the main feed. However, artificial culture is the use of water earthworms, branches and horns or silkworm pupae, slaughterhouse scraps, etc., but also with fish meal, peanut bran, corn meal, etc. with the artificial feed made to feed.
Two, pond lice fish farming
1, fish pond requirements. Pond base must be solid around, check to plug the loopholes, inlet and outlet to be set up separately, to prevent the pond water in the rainy season roaming the top (over the base) so that the pond lice fish escape with the water.
2, fish pond disinfection. Fry stocking before the fish pond must be thoroughly removed debris, clean the bottom of the pond silt, 25 kilograms of lime per mu or 20 kilograms of tea seed bran, or bleach 5 kilograms of water to the whole pond sprinkler disinfection, a week after the water test to determine the safety, in order to release the fry.
3, fry placement. Pond fish farming, can be divided into mixed farming and pure farming two ways. Mixed refers to the culture of "four big fish" pond, per mu mixed culture "five finger fish" (that is, about 200 tails per kilogram) 150-200 tails, usually do not have to specialize in feed, per mu can harvest 15-25 kilograms of pond lice fish. -Pure breeding is the use of solid pond base, drainage and irrigation is convenient, the depth of water can be controlled at about 1-5 meters, the area is generally 4-6 acres of fish ponds, to stock 3 cm seedlings per mu, 10,000-15,000 tails. Release of seedlings in the early stage, with dense netting in the pond around a 5-8 square meters of a small body of water, the first shallow water cultivation 10-15 days, as the fry grow up, day by day to deepen the water level, and finally pull open the netting, so that it grows in the large water surface.
4, daily management. Fry stocked, to adhere to the morning and evening pond patrol, to observe the growth of pond lice fish. Feed feeding to adhere to the "four", feeding the weight of the fish according to the proportion of 8% -10% put, but some of the masses are to whether the food to feed the increase or decrease in feeding, try to do not waste food. In the "four prevention" work (i.e., anti-storm cold and heat, anti-escape, anti-enemy, anti-fish disease) to be prepared for war. The use of ponds pure breeding pond lice fish, through scientific management, the survival rate can be guaranteed at 45% -55% or more, after 3-4 months of breeding, each acre can be harvested 350-500 kilograms of commercial fish, in the seed supporting the supply of guaranteed time, a year can also be cultured twice.
Three, the pond lice fish disease control
The pond lice fish mixed culture process, due to the low density, the chance of disease is low, but in the high-density aquaculture production, from the seedling to the harvest will occur at any time a variety of diseases. Therefore, disease prevention is particularly important in the pure culture process. In daily management, it is necessary to do a good job of fish disinfection when fry are placed. Commonly used salt to water 1:30, that is, 1 kilogram of salt with 30 kilograms of water, the fish fry before going into the pond soaked for 20 minutes before releasing the fry. Fish fry in the pond, transported by the pond water temperature difference, there will be "spasm waist" symptoms (commonly known as "hard body"). Fish fry before the pond, you must use a bucket of pond water slowly flushed into the bucket of transported fish fry, so that the water temperature is slowly balanced, before you can put the fish fry in the pond.
After the fry are released into the pond, there is a change in the feed fed to them and the feed for the fry, which often results in intestinal diseases within a few days of release, causing a large number of dead fish. Therefore, from the first feeding after the release of fry with 6-10 grams of erythromycin mixed into 1 kg of feed feeding, once a day for five days.
Pond lice fish breeding process, the most harmful is the viral rotten skin disease. This disease mostly appears when the fish fry are stocked for one month and weigh about 1 two. Diseased fish body surface blisters, fin base congestion, rot, serious body ulcers, at this time there will be a large number of dead fish until the whole army. Therefore, it is necessary to regularly splash the whole pond with quicklime in water, use 10-15 kilograms of lime per mu, and use it once for 15 days. If this disease occurs, most of them have no way to control the disease, this disease is only in the daily management of regular medication, do a good job of prevention.