The efficient artificial breeding technology of giant salamander has been identified by Chongqing Science and Technology Commission.

Giant salamander is a unique rare and protected animal in China, which has great nutritional value, medicinal value and health care effect. Giant salamander culture has incomparable advantages over other aquaculture industries, with great economic benefits and good market prospects. It is conservatively estimated that the annual demand is more than 10,000 tons, and the current annual output is about 800 tons, with a sharp contradiction between supply and demand. The bottleneck of the development of giant salamander industry is that the existing breeding technology of giant salamander is not mature. Giant salamander breeding is mostly imitation ecological breeding, the spawning rate is usually 10-30%, most parent salamanders do not participate in reproduction, the reproduction rate is low. Although artificial breeding has more than 40% of the rate of birth, but the fertilization rate and hatching rate are generally less than 45%, the survival rate of salamander seedlings is often less than 70%, and there is only a low reproduction rate. It is very important and urgent to speed up the upgrading of breeding technology of giant salamander. Professor Ding Shihua, Department of Fisheries, College of Animal Science and Technology, Southwest University, and Associate Professor Sun Hanchang, Chongqing University of Arts and Sciences, developed efficient artificial breeding technology and disease control technology of giant salamander, which passed the scientific and technological achievement appraisal of Chongqing Science and Technology Commission in January 2013. the overall level was identified as the leading in China, and the registration number of the achievement was Yuke 2013Y053.

The features of this result are as follows:

The main contents are as follows: 1. Unique cultivation technology of parent salamander.

The unique nutritional formula ensures the special nutrition needed by the gonads, creates the original Chinese herbal medicine to promote gonadal development, and overcomes the technical problems of low quality of sperm and eggs and non-synchronous gonadal development. The normal rate of eggs is more than 95%, and the sperm motility is more than 55%, which is much better than the breeding technology of ordinary giant salamander, which greatly improves the reproductive ability of giant salamander.

2. Advanced artificial propagation technology.

Accurately determine the timing of induction of labor to ensure the effect of induction of labor; improve the method of artificial insemination to ensure the fertilization of eggs; optimize the method of artificial hatching to promote the smooth hatching of fertilized eggs. The accelerated birth rate, fertilization rate and hatching rate are all more than 90%, which is better than the common breeding technique.

3. Advanced seedling cultivation technology.

Establish the cultivation method of palatable food organisms to promote the growth of seedlings; the survival rate of salamander seedlings is more than 90%, and the cultivation effect is excellent, which is far better than the breeding technology of ordinary giant salamander.

4. Pollution-free prevention and control technology of Chinese herbal medicine.

Research and development of a variety of Chinese herbal medicine formulations, the prevention rate of common diseases is more than 90%, and the cure rate is 80%.

The giant salamander research team has long been engaged in giant salamander breeding, giant salamander breeding and salamander disease prevention and control research. The technologies developed include imitating ecological breeding technology, imitating ecological breeding technology, three-dimensional temperature control technology of indoor breeding of giant salamander, food biological cultivation technology, factory culture technology of giant salamander and so on. Rich experience in the research of giant salamander, strong research and development strength.

The original giant salamander in southeastern Chongqing, a precious high-quality provenance.

Bright color, golden or reddish brown, smooth markings on the body surface, exquisite design, great ornamental value, good quality, fast growth and strong disease resistance

Efficient artificial breeding of giant salamander

The developing giant salamander embryo (most can only observe the part of the embryo, a few can see the whole side of the embryo)

Artificially bred mackerel seedlings

Certificate of research on key technologies of efficient artificial breeding and disease control of giant salamander