1, creating a good environment for lobster growth.
Lobster is a crustacean, similar to crab, with a pair of specially developed claws and burrowing habits, and generally burrows near the water. Lobsters like shade and are afraid of light. When the light is weak or dark, they climb out of the cave, and when the light is strong, they sink into the water or hide in the cave.
According to the habits of lobsters, a 50 cm high escape net can be added to the river pond to prevent lobsters from fleeing. At the same time, the river pond simulates the ecological environment of lobsters under natural conditions, and shallowly plants 10% ~ 15% of aquatic plants and hidden objects beside the pond to create an environment for lobsters to inhabit and hatch, so as to reduce mutual killing.
The influence of water quality on lobster production can not be ignored. The quality of water directly affects the healthy growth and development of lobsters. In the process of culture, the pH value of pond water is kept between 7.5 and 8.5, and the transparency is between 30 and 40 cm. It is necessary to add fresh water frequently, spray quicklime solution regularly, and adjust the water quality to prevent diseases and incomplete shelling.
Step 2 feed the feed reasonably
Lobsters will kill each other when they are hungry and lack food, so the feeding amount must be sufficient. Lobster feed is animal and plant feed. Plant feed is wheat, aquatic plants, rapeseed cake, etc. And animal feed is miscellaneous fish, miscellaneous meat and internal organs.
Usually, the feeding time, feeding amount and feeding mode are determined according to the habit of lobster lying in the daytime and coming out at night and the density of shrimp in the pond. Otherwise, it will increase the feed cost and reduce the breeding benefit.
3. Scientific fishing
In the process of lobster culture, under the conditions of appropriate temperature and sufficient feed, young shrimps can grow to the commercial specifications within 60 ~ 90 days. Seedlings will be released in March, and rotation will be started around June, with the big ones caught and the small ones left. Because of the large catch and small catch, the fishing rate can be improved and sold at a good price to achieve the goal of high yield and high efficiency.
Parent shrimp selection
Parent shrimp can be selected from September 9- 10/0 of last year or March-April of that year, with a weight of 30-50g, complete appendages, healthy and disease-free, and strong mobility, with a male-female ratio of 2-3: 1. Male and female lobsters have obvious characteristics in appearance and are easy to distinguish.
Among sexually mature lobsters, males are significantly larger than females; The male dragon's feet are thick, and there are bright red soft warts on the outside of both ends of the dragon's feet, while the female dragon's feet are relatively small. Most female dragon's feet have no red soft warts, and even if they are colored, they are pale.
The male reproductive hole is opened at the base of the fifth pair of feet, and the female reproductive hole is opened at the base of the third pair of feet; The abdomen of sexually mature female shrimp is enlarged, while that of male shrimp is relatively narrow.