Salmon development breeding technology has made a major breakthrough in Gansu

On the 18th, in the 6,000-square-meter cages of the Gansu Provincial Institute of Fisheries Science and Technology, 200,000 triploid large-scale rainbow trouts were in the free-flowing recreation. When they met people, these half-meter-long guys struggling to leap out. Water, ask for food.

After 6 years of scientific and technological research, the frequency of egg induction of triploid rainbow trout developed by the Institute of Aquatic Sciences of Gansu Province reached 75-80%, and the ideal technical parameters for the induction of triploid rainbow trout heat shock were screened. The technology is mature and stable, and a series of enterprise standards have been developed and developed to meet the technical conditions for industrial development.

Triploid large rainbow trout and Atlantic salmon, Pacific cod and other individuals larger carp, trade name salmon, is widely welcomed in the international market, China's annual imports of salmon nearly 100,000 tons, the market is huge. The triploid giant rainbow trout is an ordinary rainbow trout which has been artificially induced and whose chromosomes in the body have changed from two to three sets and the gonads cannot develop. Because the gonads are not developed, the energy extracted from the outside of the triploid rainbow trout is used for growth. Therefore, it can grow to 5-6 times the size of common rainbow trout.

Carp is an imported species, and it is a cold-water fish. It has high requirements for the natural environment such as water quality and water temperature. China's farmed catfish are rich in cold water resources. However, due to the fact that the domestic triploid rainbow trout has not yet achieved scale production and commercialization, coupled with large investment and long breeding period, domestic farming has not yet reached scale. Judging from the current situation of domestic farming, the majority of eel farming is common rainbow trout and gold trout, and its market competitiveness is not strong enough, and its efficiency is not high.

"The development of triploid rainbow trout aquaculture is an important measure to increase the efficiency of raising loach and to adjust the industrial structure of trout," said Zhang Yanping, director of the Gansu Provincial Institute of Fisheries Science.

In order to explore new ways for the development of the breeding industry and fill the gaps in the domestic breeding industry, the Institute of Fisheries Science in Gansu Province has conducted research on the development of the triploid rainbow trout since 2005 and has developed eye eggs cultivation, breeding, primary processing and logistics. Major breakthroughs have been made in key technologies such as preservation.

After making certain progress in technology, in 2009, the Institute of Fisheries Science of Gansu Province and the Institute of Hydrobiology, Chinese Academy of Sciences, carried out a triploid rainbow trout-inducing seed production experiment. After two years of research and exploration, rainbow trout ploidy detection and identification techniques Mature and stable, the heat shock induction facility was improved and improved, and the triploid induction rate reached 75-80% at the level of 100,000 grains.