Home › Livestock Farming › Article

Detailed Explanation of Key Points for Polyculture Techniques of Soft-Shelled Turtles, Crabs, Shrimp and Fish

Livestock Farming 0 views
1. Pond conditions: The pond area is 3.5 mu, the pond bottom is flat, the silt is about 15 cm thick, and the water depth is 1.5 m. A 40 cm wide glass fence is installed around the pond, equipped with one 1.5 kW paddlewheel aerator. 2. Pond clearing and water fertilizing: After clearing the pond by the dry method with 75 kg of quicklime per mu, expose it to the sun for 5 days. One week before releasing the seedlings, fill with water to a depth of 80 cm, and use Feishuibao and EM original liquid to fertilize the water quality, so that the water transparency is about 30 cm and the water color is tea-brown or yellow-green. 3.

1. Pond conditions: The pond area is 3.5 mu, the pond bottom is flat, the silt is about 15 cm thick, and the water depth is 1.5 m. A 40 cm wide glass fence is installed around the pond, equipped with one 1.5 kW paddlewheel aerator.

2. Pond clearing and water fertilizing: After clearing the pond by the dry method with 75 kg of quicklime per mu, expose it to the sun for 5 days. One week before releasing the seedlings, fill with water to a depth of 80 cm, and use Feishuibao and EM original liquid to fertilize the water quality, so that the water transparency is about 30 cm and the water color is tea-brown or yellow-green.

3. Seedling stocking: On May 20, a total of 175,000 whiteleg shrimp seedlings with a body length of 0.7-0.8 cm were released. One week later, 35 bighead carp with a tail weight of 250 g and 175 silver carp were released. In June, wild Chinese soft-shelled turtles weighing only 200-300 g were purchased, and a total of 1,050 were released. At the end of June, a total of 300 Chinese mitten crabs at 16 per kg were released.

4. Feed feeding: (1) Feeding of Chinese soft-shelled turtles and whiteleg shrimp: In the early stage, whiteleg shrimp feed with a crude protein content of 44% was fed, and after June, all were fed whiteleg shrimp feed with a crude protein content of 40%. Feed 3 times a day: at 7 a.m., the feeding amount is 30% of the whole day's feeding amount; at 3:30 p.m., feed 30% of the whole day's feeding amount; at 7 p.m., feed 40% of the whole day's feeding amount. The daily feeding rate is 2-4%, and it is generally appropriate to finish eating within 90 minutes. Feed evenly along the shallow water area at the pond edge. (2) Feeding of river crabs: From June to August, feed small trash fish, supplemented with corn, @#@245@#@, pumpkin, etc., and feed 2 times a day: around 9 a.m., feed once, with the feeding amount being 1/3 of the whole day; around 5 p.m., feed once, with the feeding amount being 2/3 of the whole day. In the later stage, mainly feed small trash fish, corn, and pellet feed, with an appropriate amount of green feed.

5. Water quality regulation: Starting in June, add water by 10-15 cm every week until the water depth is 1.5 m. In the high-temperature season, change the water once every 20 days, 40 cm each time. Turn on the aerator in a timely manner according to weather conditions, and after changing the water, use EM bacteria to regulate the water to avoid the "water bloom" phenomenon. The pond water transparency is controlled at 25-35 cm.

6. Disease prevention and control: During the breeding process, feed florfenicol mixed with feed once a month, adding 1 g of florfenicol per kg of feed, for 3 consecutive days. After feeding the medicated bait, splash the whole pond once with chlorine dioxide or povidone-iodine dissolved in water.

Related Articles