CATDOLL : CATDOLL: How many months does it take for crabs raised in rice fields to mature? Here are some breeding methods

It usually takes about 6 months for crabs to mature in rice fields. When raising crabs in rice fields, be sure to feed them sufficient bait to prevent them from eating rice. In the early stage, feed them mainly with high-quality feed, in the middle stage, feed them mainly with green feed and small fish and shrimp, and in the later stage, feed them with high-protein concentrated feed. At the same time, in order to ensure that the crabs can molt smoothly, it is also necessary to add fish meal, bone meal, vitamin C and other nutrients to the bait to supplement the crabs with sufficient trace elements.

1. How many months does it usually take for crabs raised in rice fields to mature?

1. Maturity time

(1) When crabs are farmed in rice fields, they usually take about 6 months to mature. Under normal circumstances, the entire farming cycle does not exceed 1 year.

(2) Crabs can usually be farmed in the spring and harvested around September.

2. Points to note when breeding

(1) Make sure to ensure that the amount of bait is sufficient to prevent crabs from eating rice. Feed high-quality feed in the early stage, mainly green feed in the middle stage, and small fish and shrimp. In the later stage, feed high-protein concentrated feed.

(2) Nutrients such as fish meal, bone meal, and vitamin C can be added to crab bait to prevent crabs from failing to molt due to a lack of sufficient trace elements.

(3) It is necessary to mix 1% garlic paste into the bait to prevent crabs from suffering from enteritis.

2. How to raise crabs in rice fields

1. Renovation of rice fields

(1) Crabs need to be raised in fields that are pollution-free, have convenient irrigation and drainage, strong water retention capacity, and where the ridges do not leak.

(2) Dig a circular crab ditch about 3m away from the ridge of the field with a width of 2-4m, a depth of 1-1.5m and a slope of 45°.

(3) Then, dig furrows in the middle of the field. The width of the furrows is 55-75 cm and the depth is 35-45 cm.

(4) Dig a temporary holding pond with a depth of 1.5m and an area of ​​150 square meters at the edge of the field.

(5) Please note that the ridges between ditches need to be reinforced and raised to prevent crabs from escaping.

2. Facilities

(1) Select good quality pipes as the water inlet and outlet, and cover the inside and outside of the pipes with nets. The size of the mesh should be determined according to the size of the crabs.

(2) The rice fields need to be surrounded by cement boards to prevent the crabs from escaping.

3. Planting rice

(1) Before planting rice seedlings, apply 6,000 to 7,000 catties of farmyard manure per mu and 300 catties of cake fertilizer per mu, and then plant.

(2) Each clump can be used to plant 3-4 seedlings, with a total of 20,000-30,000 clumps per mu, and 50,000 seedlings per mu.

4. Release crabs

(1) To ensure the quality of breeding, it is necessary to select crabs that are agile, undamaged and disease-free.

(2) Before releasing the crabs, spray them with water from the rice fields so that they can adapt to the rice field environment. The crab bodies also need to be cleaned and disinfected with chemicals before being released.

5. Feed management

(1) The roughage, animal bait and grass should be properly matched, with the roughage and animal bait accounting for 30% each and the animal bait accounting for 40%.

(2) Coarse feed mainly includes sweet potatoes, potatoes, tofu dregs, corn, etc.; animal feed mainly includes clam meat, snail meat, shrimp, etc.; forage mainly includes grass and fresh vegetables.

6. Daily management

(1) The water in the fields needs to be replaced frequently to ensure the cleanliness of the water.

(2) Every half a month, quicklime can be sprinkled on the rice fields to regulate the water quality.