Technology detecting method for comprehensively evaluating eriocheir sinensis feedstuff effect

Abstract

At present, the trend of river crab cultivation in China is to strengthen scientific bait throwing and use compound feed so as to guarantee the high efficiency and health of cultivation. However, the feed for the river crab in current market has wide varieties and different price and quality, and farmers have no dependable standards when selecting the compound feed, thus selecting the compound feed blindly. Aiming at the problem, combined with the characteristics of the nutrition metabolization of shrimps and crabs, and by a series of scientific researches, a simple and convenient and easily-mastered and operated technical method which can quickly and comprehensively judge and detect the cultivation effect of the compound feed is find, namely, the effect of the feed is judged by feed raising for two to three weeks and then by detecting the hepatopancreas index (hepatopancreas weight divided by total crab weight and then multiplied by 100%) and the hepatopancreas fat content of cultivated river crabs. If the detection results of the hepatopancreas index and the hepatopancreas fat content are relatively higher, the effect of the feed for the corresponding river crab is poorer, the nutrition of the feed composition is relatively unbalanced, and the feed quality is relatively poorer.

Description

technical field [0001] The patent of the invention relates to a freshwater aquaculture technology, mainly a technology for quickly and accurately judging the quality of river crab feed. Background technique [0002] Chinese mitten crab (hereinafter referred to as river crab) farming is developing rapidly in China, but the current farming production is still dominated by the traditional farming model. During the breeding process, a single feed, such as wheat, corn, etc., is used in combination with wild miscellaneous fish, resulting in unbalanced nutrition. , resulting in precocious puberty of cultured river crabs, and even due to unbalanced nutrition, a large amount of residual bait leads to deterioration of pond water quality, resulting in death, and the size of cultured river crabs is relatively small. Therefore, the current trend of river crab farming is to strengthen scientific baiting and use of compound feed, comprehensively adopt high-efficiency ecological breeding te...

AI Technical Summary

Problems solved by technology

However, there are many kinds of river crab feed in the market, and the price and quality vary. When farmers choose compound feed, there is no standard to base on (mainly relying on protein content to judge the quality of feed is far from enough, and protein content is a key factor for judging feed quality. important indicator, but for river crab breeding, if the protein content is too high, it will also induce precocious puberty of river crabs, so it is necessary to invent a standard that can comprehensively evaluate the quality of compound feed), and the choice is relatively blind