Aquaculture calls for good breeding and standardization

Introduction: housewives and husbands often complain that the tail of the river crucian carp and braised fish bought from the market is often detached from the fish body, and the food is boring; people even taste the head and the foot on the table: the specification of the river crab is getting smaller and smaller, and they can't eat the delicious taste they used to have; the turtle is less delicious; and the eel is often not fragrant enough It is understood that at present, there are more than 70 species of marine freshwater aquaculture in China, and 1 / 3 of the animal protein that people often eat comes from aquatic products However, it is generally not good in taste and taste, which often reduces the appetite of consumers In addition to the improvement of people's taste and living standards, the low quality of aquaculture products is the objective reason So, why is the river seafood cultured artificially not fresh enough? The reporter has consulted a number of aquatic experts in Shanghai Fisheries University, East China Sea Fisheries Research Institute, Shanghai Fisheries Research Institute and other teaching and research institutions There is a consensus among these aquatic experts that it is mainly due to the degradation of aquatic products and the lack of standards for aquaculture Experts generally believe that the first reason for the degradation of aquatic product germplasm is the serious disjunction of genetic improvement research For example, among the more than 50 freshwater fish breeds in freshwater aquaculture, there are only 9 breeds that have been selected and approved, and the others are wild species that have not been selected No matter the traditional species of grass, silver carp, bighead carp, fish, shrimp, crab, turtle, turtle and other characteristic aquatic products, they are still in the stage of wild population at present, and have not formed the fine strains of artificial breeding; secondly, due to the one-sided pursuit of yield in many areas, the standardization of breeding, standardized operation and genetic improvement of fine varieties are ignored, so the inbreeding and water system are mixed As a result, the fish will have different specifications, even become smaller, variant and taste worse What's more, there are three kinds of freshwater fish resources extinct in China at present Among them, the Yangtze River shad can't even collect the research specimens There are many freshwater fish resources, which are suffering from "genetic pollution" As the saying goes, "a good seedling is half a grain, and a good seed is half a harvest." "With less production standards and less cultivation of improved varieties, river seafood cannot be guaranteed Therefore, aquaculture experts suggest that we must establish systems to strengthen the protection of natural germplasm resources; at the same time, we should promote the improvement and standardization of artificial breeding, establish a perfect management system of improved species, breeding standard system and seedling quality detection system, etc., so that people can expect to "eat excellent fish" and "eat good fish" (author:) share to feed Weibo share to: