In summer, the weather is hot and the water temperature is relatively high. In order to ensure the river crabs to cross the river safely and improve the survival rate, the following measures must be taken: Kn95 Protective Mask,N95 Respirator Face Mask,Kn95 4 Ply Mask,N95 Disposable Mask KUTA TECHNOLOGY INDUSTRY CO.,LIMITED , https://www.kutasureblue.com
First, to ensure adequate supply of aquatic plants Summer crab pool should be stocked with some aquatic plants such as peanuts, duckweed, reeds, white water, to provide a cool shark habitat. In addition, there must be a large supply of young weeds, such as Hydrilla verticillata and Arthrobacter spp., in order to feed the crabs and avoid predators. The plants used for shading should not cover the entire surface of the pool, and there should be about 1/3 of the area of ​​the pool. Thoroughly remove the filthy weeds so as not to spoil the water and breed germs.
Second, ensure that the water is fresh, clean and nutritious. Crab ponds should always check the water quality, remove the leftovers and dirt timely, and keep the pool water more than 5cm. Diligently fill in water and change new water. Water sources must be clean and sanitary, non-polluting and non-toxic. Use biological agents to divert water and change water.
Third, we must pay attention to feed the high temperature should be appropriate to increase the feeding of plant foods, reducing the feeding of animal feed. Wheat, squash, and cakes are all vegetable feeds that crabs love to eat. The amount of feeding should be increased or decreased according to the water temperature of the day and the feeding condition of the crabs on the previous day. It is generally about 10% of the overall weight of the crabs, and it is advisable to have a little surplus for two hours after feeding. Feeding time should be carried out every day from 4 to 5 pm to adapt to the crab's nocturnal habits.
Fourth, we must do a good job to prevent escape, prevent and prevent disease work during the high temperature of the crab pool must adhere to the daily tour pond. Through the patrol pond, learn about the feeding activities of the crabs, check the situation of the prevention and escape facilities, and whether there are any diseases or predators. If there are traces of crab escape, replace the damaged escape prevention facilities. Timely capture frogs, water mice, and other predator creatures in the crab pool to rule out their damage to the crabs. To effectively prevent disease, anti-microbial agents and other drugs can be used from time to time. The occurrence of diseased crabs and dead crabs should immediately find out the reasons and pay close attention to treatment.