Shrimp culture technology of freshwater lobster
Ultrasonic Cleaners,Digital Ultrasonic Cleaner,Tattoo Accessories Kiay Trade Cosmetology Co., Ltd. , http://www.chinatattoomachines.com
(1) Breeding conditions Artificial lobsters are preferably cultivated in ponds, paddy fields, and swamps, and their size can be large. Because of the habit of burrowing holes (usually the depth of the cave is 50-80 cm, and the depth of some caves is more than 1 m), in order to avoid escaping, the acreage around the aquaculture water should be more than 1.5 meters wide, and it is A 0.5-meter-high anti-stopping wall or escape board with a smooth inner wall is installed on the perimeter. If the aquaculture water body is less than 1.5 meters wide, the brick wall or concrete wall with a height of 0.5 meters shall be built up from the bottom of the water wall and wiped with cement to prevent escape. At the same time, a mud loach must be built in the middle of the pond. The loach must not be connected to the pond. The length of the loach must be about four-fifths of the length of the pond, the width of the loach should be more than one meter, and the loach must be 5-10 cm above the water surface to create a lobster. Play caves. The depth of cultured lobsters should be 0.5-1.5 meters, and it is better to have middle water depth and shoals around. The pH of the water is 5.8-8.2, and the dissolved oxygen is not less than 1.5 mg/l. Aquaculture water should have aquatic plants, stocking river rafts and snails, and fertilizing water quality. The bottom silt should be more than 20 cm. Ii. Feeding and management of lobsters Lobsters are omnivorous animals. They feed mainly on organic debris, algae, filamentous algae, roots, leaves and fragments of aquatic plants under natural conditions. They especially prefer green and juicy greens. Plants such as water hyacinth, water hyacinth, malay, green grass, noodle grass, etc., and like to eat water silk worms, cockroaches, fly maggots, aquatic insect eggs, cockroaches, and snails, clams, fish and other animal foods . In artificial feeding, rice bran, bran, bean cake, etc. can also be fed directly. Feeding amount depends on the number of aquatic animals and plants in the pond and the seasons. It usually feeds more in April-September each year, and feeds less in other months; the aquatic animals and plants in the pond are rich and fed less, and vice versa. Feeding should be done daily at around 5pm, once a day, and the amount of food added should be increased or decreased based on the first day of feeding. Although lobsters have strict requirements on water quality, they should use live water, if there is no living water, new water should be replenished once or twice a month, and 1/3 of new water should be added each time. (3) When the lobster prawn is over 30 grams, it can be caught and marketed. The fishing methods are mostly used in shrimp cages to catch large fish.