Freshwater Pond Snails

Freshwater pearl, local grass-dimensional recirculating mode duck

Deqing County Water Dang Lu pearl farm, since the fall of 2007 began with freshwater pearls and three-dimensional circulation of local grass duck breeding mode, through years of practice, and achieved good economic and ecological benefits. The field of aquaculture water surface 200 acres, 150 000 cultured pearls, silver carp per mu set of Growing Flowers 50. The fall of 2007 purchased 10,000 ducks, ducks fed special feed, after 120 days of careful breeding, began to egg, continuing about 240 days. Decreased egg production rate, etc., the sale of duck breeding cycle of approximately 1 year. Ducks waste generated, all pearl farming as needed fertilizer, 10 000 ducks in the basic fertilizer produced to meet the 150,000 pearls needed for growth, gradually produced faeces, can maintain a balanced environment within the pond, pond water quality is usually tender and cool to keep fertilizer live, pearl production has improved significantly.

    1, Feeding management

    1, the local grass duck: duck disease immunization regularly do work day in accordance with the growth of grass duck, timely injection of bird flu, plague, cholera and other vaccines to prevent large-scale duck disease; improve the cleaning of shed duck , regular cleaning hut, nothing out of duck farm workers are not free to eliminate the source of infection; feed with a reasonable, quantitative feeding time. In addition to special duck feed fed outside, but also gain a large surface of the water snails, mussels, and aquatic plants such as supplementary feeding, feed cost savings.

    2, pearl mussel: too fat, depending on the water quality of major water level, non flush adjustment; summer water than fat, timely spill of biological agents to enhance the transparency of the pond, to suppress excessive growth of algae, using the results to the best of Bacillus type; Education oyster cultivation process required regular use of lime to increase the calcium content of the pond, to speed up Pearl Mussel growth and development, improve the pearl production.

    Second, experience and understanding of:

    1, significant savings in the cost of farming inputs. 200 acres of water pearls, in previous years, various types of fertilizers each year into the amount of 4.5 million breeding ducks by completely eliminating the need for amount invested. In addition, because the pond year round to maintain a balance within the environment, can save water by improving water and electricity needed to hit 05,000 yuan, the annual cost about 50,000 yuan.

    2, raising ducks for egg production rate and meat quality. 200 acres of water for the ducks to provide adequate space, laying duck laying rate and survival rate significantly improved, ducks feathers smooth, beautiful appearance, meat tasty, price is satisfactory.

    3, the model full use of large water resources, on the one hand for the grass to provide adequate water swimming ducks playing on the other hand grass duck excreta as fertilizer required for cultured pearls, which saves the cost of fertilizer inputs, but also on the environment is not any pollution, is a circular economy should be promoted.
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