Andrias male and female natural pairing imitative ecological efficient breeding method

Abstract

The invention discloses an andrias male and female natural pairing imitative ecological efficient breeding method. The method comprises the steps that male and female andrias are raised in a mixed mode, wherein the young male and female andrias is raised in a mixed mode; trial pairing is conducted on breeding male and female andrias, wherein when getting close to sexual maturity, the andrias is placed into a trial paring pool, in a breeding season, namely between August and September, the secondary sex characteristic becomes obvious, the pairing succeeds, the andrias is selected out and placed into a breeding pool, and the trial paring pool and the breeding pool are constructed and constituted by multiple river channels and caves; breeding is conducted in the breeding pool, wherein the andrias which is successful in pairing is placed into the breeding pool which is provided with only two caves, female andrias needs to be isolated after laying eggs, and male andrias is not disturbed to hatch; young andrias is raised, wherein the young andrias is not fed from the shell-emerging time to the 30th day, 30 days later, the young andrias is fed with tubificidae and water earthworm, one year later, the young andrias is fed with young grass carps and young carps, three years later, the andrias is sold as commodities, and seven years later, excellent offsprings are reserved for breeding; bait fishes can be casted after the bait fishes are raised for three to five days temporarily and no disease attach is found; at the earlier ovulation stage, the female andrias needs to be fed with crabs, loach and shrimps; water bodies, water channels and bait are disinfected with 0.5-3% of disinfection salt, and appliance is disinfected with potassium permanganate; when the bait fishes are casted, the bait density is increased.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a method for imitating ecology and high-efficiency breeding of giant salamanders with natural pairing of males and females. Background technique [0002] Giant salamander, commonly known as salamander, is a rare species unique to my country. It has an evolution history of 350 million years. It is the largest rare amphibian in existence. It has extremely high scientific research, medicinal, health care and edible values, and is a national second-class protected animal. In recent years, due to environmental changes, ecological damage, water pollution, high-intensity fishing, and weak reproductive capacity of giant salamanders, the habitat of giant salamanders has shrunk sharply, and the number of wild giant salamanders has decreased. Some regional populations have become extinct. In order to protect the rare and endangered species of giant salamander, people have carried out vari...

AI Technical Summary

Problems solved by technology

This type of technology has the following disadvantages: First, artificial propagation changes the growth and reproduction environment of giant salamanders. The artificial propagation conditions cannot meet the objective conditions for the growth and reproduction of giant salamanders. In addition, human-made compulsory interference results in low and unstable parental reproduction rates of giant salamanders; Second, some mandatory technical measures adopted in the artificial breeding of giant salamanders severely damage the fertility and life of parent salamanders, greatly shortening the breeding period; It is beyond the reach of households, and the cost of reproduction is relatively high

This type of technology has the following disadvantages: first, the ability to resist natural disasters such as mountain torrents and rainstorms is weak, and it is difficult to control artificially when encountering natural disasters; second, natural enemies are seriously harmful, such as water rats, water snakes, crabs, water spiders, etc. feed on or harm seedlings The third is that it is not easy to manage, and it is easy to be damaged by human beings, such as human poisoning, theft, human garbage, etc., which also have a great impact

This type of technology has the following disadvantages: first, the disease of giant salamanders is easy to infect each other; second, giant salamanders bite each other from time to time; third, the emergence time is relatively later than that of artificial seedlings, resulting in slower growth than artificial seedlings in the coming year; fourth, the growth of giant salamanders In the wild, susceptible to weather, natural disasters, etc.

This type of technology is difficult to observe the growth and development of giant salamanders, and it is not easy to detect the disease of giant salamanders, which is greatly affected by external factors

[0008] None of the above technologies has completely solved the problems of asynchronous development of male and female gonads of giant salamanders and low rate of gonad development and maturation, and under artificial induced production conditions, the sperm motility is poor, the rate of induced production, fertilization rate and hatching rate are not high, and the service life of breeding salamanders is short