Quang Nam: Replication of commercial crab farming - More work to do
The widespread development of commercial crab farming in Quang Nam has set requirements and orientation needed for this species.
Widespread development
Commercial crab bring high economic value for his family remain anonymous. Photo: Q.V
In 2011, has strongly TP.Hoi An investment fund construction of crab farming. Local funding to support development of the model for both his family and Le Le Ngoc Hung Up (An American bloc, Cam Chau). Be deployed in an area of 0.25 ha with stocking is a shrimp/m2, after more than 2 months of farming families to Le Ngoc Len harvested 375 kg of commercial crabs, collected more than 67 million. From the third year, his family remain anonymous crab farming in an area of 1 ha. With a density similar to this point, his family had harvested more than 1 ton crab. Priced at 150 thousand VND / kg, his family obtained 150 million. Le Hung said: "During the crab, thanks to the technical guidelines and conduct periodic testing of bio-industry should function crab survival rate is very high. Also, thanks to the tour participants learn, as well as a good investment for the development model should be good. With high yields and relatively stable prices, the model creates the open, providing practical economic effect. "
Earlier, in 2010, commercial farming in brackish water crabs were also Extension Center - Quang Nam extension are implemented in all localities throughout the city. Tam Ky district of Nui Thanh and Duy Xuyen. The results are very encouraging. The success of the model is to diversify the species, environmental improvements and reduce investment risk, ensure the effectiveness of production. Mr. Hua Thinh, model officer of the Center for Agriculture - Extension of Quang Nam, said: "Crab is not only relatively easy to raise, but also well suited to the conditions of ponds and can grow with different forms. If the household investment, proper care, crabs will yield high efficiency as expected. Not only that, in some farming areas that present difficult conditions and the ability to develop sustainable shrimp farming, the commercial crab is a suitable option.Economic efficiency has shown, this model is more efficient than the audience of discus, seabass, grouper, seaweed ... a lot. " Nguyen Thi Dong, Deputy Director of Engineering - Information (Centre for Agriculture - Extension province) adds: "The model of commercial crab culture has achieved the objectives, technical requirements set out .After years of development, crab growth, good growth, high survival rate (over 60%) and weight (more than 300 grams / fish). The model has brought high economic efficiency and the farmers enjoy a high response. "
In that difficult
According to the Aquaculture Department province, up-scale aquaculture production along with the supply industry exports in time to the next direction of this model.However, the biggest difficulty in expanding their current production is the same problem. By this time, the seed culture is still based on wild seed. Currently, the province, a number of aquatic seed production in Dien Duong (Dien Ban) has run the same crab. However, because the quality of the parents is not high adaptability of the human is very low. Breeding season of the crab meat into the most appropriate is around February to May. This time, the environmental conditions favorable for crabs and crab harvest value is very high. However, due to difficulties in stocking seed so often delayed. This not only makes great crab crab slowly making up bricks but sales soon to lower prices, reducing economic efficiency.
Another difficulty with increasing production scale crab culture is the problem food.When small-scale production, the use of shrimp, fish, inexpensive, and mollusks, cereals and processed food for crabs is easy to implement. However, the increased scale of production, food prepared by industrial methods (such as food for shrimp) is essential.Currently, due to various objective and subjective, this food is on the market. Since crab is like a bulimic and when food sources are not met, crabs can eat each other, will cause losses.
According to statistics, in two years, the area of brackish water shrimp ponds were empty at the tide is 500 ha. Currently, the increased ability of this area is enormous.With the object of commercial products bring high economic efficiency and may fix the conditions of ponds fallow, then the increased investment is essential. However, to ensure that the problem of seed mass and food for crabs and specialized agencies to invest more jobs.
