Autumn management of hairy crabs

1, to strengthen anti-escape facilities: As the saying goes "autumn wind, crab feet itch." After entering the fall, carefully check the anti-escape facilities and strengthen the escape. And note that there can be no high-crop crops on the edge of the crab pool.
2, planting a good aquatic plants: "crab size, look at water plants," aquatic plants is an important factor affecting crab capture specifications and yield, in the summer and autumn high temperature period, aquatic weeds can provide habitat, hidden, shelling sites and plant food, It can also play a role in shading, reducing water temperature, improving water quality, and so on. The aquatic plants planted are preferably aquatic plants like water hyacinth and bitter grass. The area accounts for about one-third to one-half of the crab pool.
3, to maintain good water quality: keep fresh water during the crab breeding process, the best conditions to engage in micro-fluid water to raise crabs, in the summer every 15-20 days splashed calcium phosphate (2-3ppm), quicklime 10-15ppm to adjust The pH of the water body (note that the application time should be separated by 3-5 days) and the transparency should be controlled at 35-40cm to promote the growth of the crab body. Due to the large temperature difference between day and night in autumn, the water quality is easily deteriorated. Change the water once every 3-5 days, change the amount of water is one third of the original pool water, and maintain a water depth of 1-1.5 meters.
4. Scientific feeding: In the summer and autumn stages, the proportion of plant foods (such as bean cake, wheat, pumpkin, etc.) should be appropriately increased to facilitate the accumulation of crab crabs, and in the middle and late autumn, during the season of crab fattening, the snails, cormorants, and animals should be properly increased. Feed and high-protein diets such as mixed fish are fed twice a day, and daily feed accounts for 5-8% of crab body weight.
5. Strengthen disease prevention and control. Summer and autumn seasons are the high season of crab disease, and they are prone to large-scale diseases. Regular use of a combination of internal medicine (such as oxytetracycline, Radix, dehulling) and external medication (such as shellfish crab crab) combination of preventive measures. Sprinkle lime once every 2 weeks, occasionally splashing the whole pool with bleach, crab, photosynthetic bacteria, etc. Monthly 3-4 times with terramycin, sulfa drugs and other mixed feeding. Focus on the prevention and treatment of river crabs' "shaking disease", "ciliosis", and "biological predators".

Avanafil Intermediates

Cas 330785-83-6,Avanafil Intermediates,3-Chloro-4-Methoxyphenyl

Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd ,

Posted on