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蟹种的优劣除品种因素外,判断的主要方法是一看、二爬、三查。一看,是看蟹种的规格和外观。规格均匀,背甲半透明,底部白色,爪尖完整,内脏和鳃部无病变的为优质蟹种;如果规格不均匀,外观差,爪尖磨断或有焦点的为劣质蟹种。有些爪尖磨断或有焦点的蟹种,一般因在网箱中暂养时间过长,放养后第一次蜕壳往往很难完成,并有
In addition to breed advantages and disadvantages of crab species, the main method to judge is a look, two climbs, three checks. A look, is to see the specifications and appearance of crab species. Specifications are uniform, the back is translucent, the bottom of the white, the tip of a complete claw, visceral and gill no disease for the high-quality crab species; if the specifications are uneven, the appearance of poor, claw tip broken or focus for poor quality crab species. Some claw tip grind or focus of the crab species, generally because of the cages in the holding time is too long, the first time after stocking molting is often difficult to complete, and