The profit of fish farming is low? You might as well have a mixed culture of fish and soft-shelled turtle to improve the benefit.

Benefit analysis of mixed culture of fish and soft-shelled turtle

The pond imitates the ecology to raise the soft-shelled turtle, the pond soft-shelled turtle produces the environment is good, the water quality has no pollution, feeds the processed grass carp, carp and so on fish, the nutrition is rich, the palatability is strong. One month after entering the pond, the young soft-shelled turtle ate well and its body color was gradually similar to that of the wild soft-shelled turtle. Through this culture of soft-shelled turtle, the taste is pure, sweet, close to the wild soft-shelled turtle. Bionic culture of soft-shelled turtle in pond, mixed culture of soft-shelled turtle fish, does not affect fish culture, does not need high investment, and the benefit of fish-turtle mixed culture is high. It has higher popularization value in the popularization and application of existing pond fish culture.

The mixed culture of fish and soft-shelled turtle not only improves the economic benefit of pond fish culture, but also makes up for the deficiency of many diseases and poor taste of soft-shelled turtle culture in greenhouse, but also the growth environment of soft-shelled turtle is close to the natural environment, and the quality is higher than that of soft-shelled turtle culture in greenhouse. Mixed culture of fish and soft-shelled turtle can also increase the yield per unit of water body, which opens up a new way to increase economic benefits.

Success stories:

"mixed culture of fish and soft-shelled turtle" in Xiaoshan Cooperative is easy to make money.

Two years ago, 250 soft-shelled turtles were put in, each costing 7 taels or 24 yuan per catty. Around the Spring Festival this year, a batch of soft-shelled turtles were sold. Each one grew to two and a half jin and sold for more than 40 yuan per catty. The soft-shelled turtle alone made more than 3000 yuan. Speaking of the benefits of mixed culture of fish and soft-shelled turtles, Chen Qihong, a member of the Xiaoshan Aquaculture Cooperative in Zhongxiang City, smiled happily from ear to ear.

In recent years, the Xiaoshan aquaculture professional cooperative has demonstrated and guided its members to adjust the culture structure of intensive fish ponds, implement the mode of mixed culture of fish and soft-shelled turtles, and culture the "four major domestic fish" and soft-shelled turtles together in intensive fish ponds, realizing three-dimensional development of water surface, comprehensive utilization of resources, and effective control of diseases, promoting fishery efficiency and increasing farmers' income.

Liu Deqing, director of the cooperative, took the release density of his own fish pond as an example to calculate an account: without affecting conventional fish farming, 25 soft-shelled turtle fry were put in per mu, each weighing 1.7jin, 26 yuan per catty, and two or three years later, each weighed about 3 jin, with a price of 50 yuan per catty. Excluding the breeding cost (mainly escape prevention facilities and fish-bait purchased at a low price), the net income increased by about 2000 yuan per mu. According to his introduction, many members of the cooperative have mastered the technology of mixed culture of fish and turtles, have seen the benefits of mixed culture of fish and turtles, and have a high enthusiasm for promoting the mode of mixed culture of fish and turtles. At present, the whole cooperative has developed an area of more than 1200 mu of mixed culture of fish and turtles. It is estimated that in two years, the whole cooperative will increase its farming income by more than 2.4 million yuan, and households will be more than 16000 yuan.

Experience in mixed culture of fish and soft-shelled turtle

In May 2013, under the guidance of Guizhou Fisheries Research Institute, 3000 young soft-shelled turtles were introduced from Hunan and distributed to Huang Yaoming and Lu Bangyong in Suiyang County, Guizhou Province. Huang Yaoming's aquaculture production is now taken as an example.

1.1 Survival rate of culture

After six months of breeding, the survival rate of the young soft-shelled turtle introduced on May 10, 2013 was more than 80%.

1.2 yield and output value of soft-shelled turtle

After 6 months of feeding to meet the commodity specifications. The average individual was 580g / tail. According to the usual production diary records, it was estimated that the death number of soft-shelled turtles was 360. a total of 1140 soft-shelled turtles survived and the yield was 661.2 kilograms. the output value is 132240 yuan (calculated according to 200yuan / kg) and the output value is 44080 yuan per mu. The cost of introducing juvenile soft-shelled turtles is 350kg (160g / kg), the cost is 28000 yuan (80yuan / kg), the cost of purchasing bait fish is 5040 kg, the cost is 40320 yuan, and the pond renovation and other expenses are 15000 yuan, with a total cost of 83320 yuan. After deducting the cost fee, the total new income is 48920 yuan, and the new income per mu is 16300 yuan.

1.3 Fish production and output value

At the beginning of April before the release of young soft-shelled turtles, 1200 young crucian carp and 300 silver carp were released. Since December 2, 2013, they have been caught and weighed 500kg, with an average price of about 20 yuan per kilogram, with a total output value of 10, 000 yuan and an output value of 3333 yuan per mu, deducting 4000 yuan from cost. the total increase is about 6000 yuan.

1.4 vegetables

1000 kg of asparagus was harvested, with an output value of 4000 yuan, an increase of 3000 yuan.

2. Ecological culture technology of soft-shelled turtle in pond.

2.1 selection and renovation of ponds

It is transformed from the soil pond in which adult fish are cultured. The pond has an area of 3 mu and a water depth of 1.5 meters. A yellow sand field of 20-25 cm is spread at the bottom of the pond near the ridge, with an area of 100 square meters. The escape prevention facilities are erected with asbestos tiles around the pond. The erection method is as follows: first, at a distance of 50 cm from the ridge of the pond, hit a 2-meter-high stake (30 cm above the water surface) every 1.0 m, connect the stake with wire and fix it around the pond. Put the asbestos shingles close to the stakes and wire, merge into the pond ridge soil 10 cm, tilt to the pond, the angle with the pond water is 60. About, the asbestos tile is 20cm above the water surface, and there can be no space between the asbestos tiles. In order to facilitate baiting, a sun-backed floating platform is set up in the sunny part of the pond, which is also made of asbestos tiles. The asbestos tile support is made of asbestos tiles with cement bricks as piers to support the asbestos tiles out of the water into a slope of about 30 °. Its area is 100 square meters, and there is an area of 1 ram 3 in the water.

2.2 vegetable cultivation

Before the seedling is put into production, a rectangular bamboo frame made of bamboo is made of bamboo, which is 5 to 8 meters long and 1.2 meters wide. The method of planting hollow vegetables is as follows: first, the seedlings of hollow vegetables (usually 10 centimeters long) are planted in plastic pipes with a length of 2 centimeters and a diameter of 2 centimeters, which are tied up in the bamboo frame beforehand. The plastic pipes are 20 centimeters apart. Different from traditional soil growing vegetables, aquatic vegetables rooted in water can convert nitrogen, phosphorus and other harmful substances in water into nutrients, so there is no need for fertilization and separate management after planting.

2.3 conditions of water source and water quality

By using the water of Houshui river, the water source is sufficient, the water quality is fresh, the inlet and drainage is convenient, the ph value is about 7, and there is no pollution.

2.4 Seedling release

In this culture method, the imitating ecological culture model is used to co-culture the young soft-shelled turtle and fish, mainly the soft-shelled turtle.

2.4.1 soft-shelled turtle seed stocking

A young soft-shelled turtle weighing 100g and 200g per tail was selected and disinfected with potassium permanganate solution, then the soft-shelled turtle was gently placed on the back table and let it run into the pool. A total of 1500 young soft-shelled turtles were released per mu for ecotype rearing. The release time of soft-shelled turtle species in our land is from April to May, and the individuals can reach 0.5-0.8kg for 6 months, which can be caught and sold.

2.4.2 Fish stocking

In early April before the release of young soft-shelled turtles, 1200 crucian carp fry were released, with a survival rate of 90% per mu, and silver carp with a specification of 100g / mu, with a survival rate of 90%. The feed machine was used to feed three times a day.

2.5 feeding and management

2.5.1 Pond disinfection

Half a month before the release of fish and turtles, anhydrous ponds were disinfected and sprinkled with 30 kilograms of quicklime per mu, followed by fish and soft-shelled turtles.

2.5.2 feeding and management of soft-shelled turtle

The feed of soft-shelled turtle is mainly purchased from the fish such as grass carp and carp that have died of injury or hypoxia in the aquatic market in Zunyi City. After processing, the bait fish is placed on the table and fed twice a day, once at 6: 00 a.m., 5: 00 p.m., 30: 00 p.m., with a feeding amount of about 15 kg each time. In short, the bait should be fresh every day. From June to September, sprinkle food and sun farms with an appropriate amount of quicklime water every month, and carry out regular disinfection. After six months of breeding, it can be fished and listed one after another in November.