Focus News Cable TV Online Shanghai Channel Yin Zhengming reported that the 15th Crab Culture Festival of Shanghai Ocean University and the 2021 "Wang Baohe Cup" National River Crab Competition were recently held at the Shanghai Wang Baohe Hotel. After review by experts and experts, a male crab weighing 644.8 grams from Pangu Ecological Agriculture Development Co., Ltd. in Jishui County, Jiangxi Province was awarded the "Crab King", and a female crab weighing 473.6 grams was awarded the "Queen Crab".
China's river crab industry from the 60s to 80s of the last century 'natural stocking' stage, through the artificial intensive breeding, ecological breeding stage, is now moving towards the direction of green breeding. River crab farmers around the country have attached great importance to the fine seeds, technology, water quality and management, river crab growing specifications and quality steadily rising, this year's national river crab production is expected to be about 800,000 tons, the source of commercial crabs is sufficient, high-quality brand river crabs have their own advantages. This time, more than 2,000 river crabs selected and sent by more than 80 units in Shanghai, Jiangsu, Anhui, Zhejiang, Shandong, Hunan, Jiangxi, Chongqing, Sichuan and other places participated in the national competition.
Shanghai Ocean University has developed a set of "Chinese River Crab Quality Crab Evaluation Software System", and the final score of male and female crabs is calculated based on the average value of fat fullness, weight and standard deviation.
It is worth mentioning that in terms of the coverage of fine seeds, technology integration, market popularity, etc., the Shanghai crab industry ranks in the forefront of the country. This year, 25 farmers in Chongming, Songjiang, Baoshan, Pudong, Qingpu, Jinshan and other places in Shanghai participated in the competition, accounting for about one-third of the country. Although this year's river crab farming production in Shanghai has withstood the triple test of the strongest typhoon, the longest high temperature period and the earliest cold wave, it has had a certain impact on the river crab industry. However, through the active efforts of technicians and breeders, the overall size, yield and quality of river crabs have increased, and many farmers have been commended by the jury. Among them, Chongming Fukushima Aquatic Products Shen Yada won two awards, including the Best Germplasm Award.
According to Ma Xuzhou, associate professor of the School of Fisheries and Life Sciences of Shanghai Ocean University, every July, the Shanghai Crab Market begins to retail the "June Yellow" with yellowed crab backs. After the golden autumn of October, it is necessary to buy hairy crabs with green backs. Only when the back of the crab turns green, the crab meat, crab yellow (liver) and crab paste (gonads) will be fat and sweet.