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Second, seed stocking off: Mink is very strong vitality, easy feeding and management, but because it is outdoor large-scale surface operations, stocking in spring and summer is better. And the leech hermaphrodites, each leech can lay eggs breeding, it is generally March to March spawning in the soil, each leech can produce 1-4 eggs, each egg quail breeding 60-80 young leeches. Therefore, the summer and autumn are the most prosperous period for the leeches, and it is also the best season for collecting fish. Per square meter of pool can be stocked 5000-8000 leeches.
Third, feeding feeding off: water leeches to aquatic plants and water microbes and organic matter for food. Artificial breeding is generally put on snails to feed on water. Animal blood is fed once a week, blood clots of animals such as pigs, cattle, and sheep are placed in the pool. A piece is placed every 5 meters. After the leeches smell the smell, they will gather quickly. After the feeding, the residue should be eliminated in time to avoid polluting the water.
Fourth, adjust the water quality off: Pool water should be clean, especially after the timely removal of residue after feeding, so as not to pollute the water quality. And the water temperature is generally maintained at 15-30 °C, because the leeches stop feeding at temperatures below 10 °C, and stop growing above 30 °C. July-August is the second spawning period of the otter. At this time, the water temperature is relatively high, and the water should be changed properly to keep the water in the pool fresh and the dissolved oxygen is high.
Fifth, the management over winter: After entering the winter, the otters drilled into the soil to hibernate. The otters restocked in early spring can be caught and processed for sale from September to October. Before harvesting, the water shall be drained first, and the net shall be used for fishing. A large and robust seed shall be selected, and 10-15 kilograms of blisters shall be selected for each acre of breeding ponds to be put into the breeding pool for winter. Without using any kind of blisters, wash with clean water and put it in light salt water or sprinkle the food powder into a container filled with blisters. After killing the blisters, remove them, wash them with clean water, and then dry them for sale.
The main points of raising water
1. Site selection Jianchiguan: Choose a place where the sheltered winds are sunny and where irrigation and drainage are convenient. The depth of the pool is 1 meter, the water depth is 0.6 meters, and inlets and outlets are provided. Stones, branches, and other debris are laid at the bottom of the pool, and the water supply is inhabited.