Hydra artificial breeding

The otters look like larvae. It is a kind of aquatic oligochaete in animal species. Its body color is bright red or grayish gray and slender. It is about 4 cm in length and up to 10 cm in length.

1, the election. Choose waste water with good quality, rich organic matter, water depth of 0.5-1 meters, and slow water flow. Before use, remove mud from the bottom of the tank, preferably three soils.

2, management. The culture pool is best maintained with microfluidic water, ensuring fresh water, adequate dissolved oxygen, and a pH of 5.6-9. Ingress and egress outlets are provided with a firm filter cloth to prevent miscellaneous fish and enemy enemies from entering.

3, put the species. You can go to the waste water ditch to harvest silkworm species, 25-50 kilograms of water per acre of water stocking.

4, feeding. The feed is fed once every 3 days, and diluted with 100 kg of fine material and 1200 kg of cow dung per acre. Concentrates must be fermented, first add water to mix the feed (add water to hand feed, loosen the energy for the degree), closed fermentation for 15-20 days after use.

5, fertilization. Choosing organic sludge-rich sludge as raw material for the medium, spread it to the bottom of the pond at a thickness of 10 cm, and add some bagasse under the sludge. Then water soaking, 300-400 kg of livestock manure per acre applied as base fertilizer. Put 30 kg each of rice bran, wheat bran, flour into the pond and put it into the pond before planting.

6, harvest. Generally about 30 days after planting can be harvested. Harvesting method: Discard most of the pool water, make the remaining pond water in an anoxic state, and wait for the silkworms to clump together and float on the water surface. Use a 24 mesh dip net to collect. The amount of fish should not be too large every day. The collected silkworms are sterilized and used as feed for feeding, and can also be made into dry processed mixed feed.

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