Special feed for living through winter for tilapia

Abstract

The invention belongs to the technical field of aquatic feeds, relating to a special feed for living through the winter for tilapia. The special feed for living through the winter for the tilapia consists of raw materials and addictives. The invention is characterized in that the raw materials comprise the following components in parts by weight: 35 parts of rice bran, 35 parts of bean pulp, 13 parts of fish meal, 14 parts of wheat middling, 1.5 parts of meat and bone meal, 0.5 part of salt and 1.0 part of vegetable oil; the addictives are vitamin C and vitamin E, the content of the vitamin C is 800-1000ppm of the raw material by weight, and the content of the vitamin E is 100-200ppm of the raw material by weight; and the rice bran, the bean pulp, the fish meal, the wheat middling, the meat and bone meal and the salt are smashed, then fully mixed with the vegetable oil and granulated, drying and cooling are carried out, the vitamin C is prepared into a water solution with the concentration of 80-100g / l, the vitamin E is prepared into a vegetable oil solution with the concentration of 10-20g / l, the water solution with the concentration of 80-100g / l and the vegetable oil solution with the concentration of 10-20g / l are sprayed on the granulated mixture, and finally, sealed package is conducted after drying. The feed has high crude protein and crude fat contents and the added vitamins C and E, and has obvious effect with above 90% of overwintering survival rate in cultivating oreochromis aureus, gift tilapia and nile tilapia.

Description

technical field [0001] The invention belongs to the technical field of aquatic feed, in particular to a special feed capable of improving the overwintering survival rate of tilapia. Background technique [0002] Tilapia is a tropical fish, and it faces the problem of overwintering in other areas in winter. The lowest temperature the tilapia can tolerate is around 10°C. If it is lower than this temperature, it will freeze to death. If it is between 10-15°C, it is very easy to be infected with viruses, molds and protozoan diseases, causing a large number of deaths. Overwintering temperature control is too low, which can save energy, but it is easy to induce diseases; overwintering temperature control is high, wasting energy and manpower and material resources, and the requirements for heating equipment are also increased, which increases the cost of overwintering. The water temperature of tilapia overwintering is generally controlled at about 20°C. During the winter, the sto...

AI Technical Summary

Problems solved by technology

To improve the water quality of the overwintering pool, the most effective way is to replace the pool water, especially in the severe winter, to do a large number of frequent water changes to maintain the suitable water temperature and water quality of the overwintering pool requires a lot of capital investment, which will undoubtedly increase the cost of overwintering and the water environment. cause some pollution