Breeding method for improving commercial specification and commercial rate of freshwater shrimps
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A technology of commodity specifications and breeding methods, applied in the fields of botanical equipment and methods, fish farming, climate change adaptation, etc.
Active Publication Date: 2016-10-12
FISHERIES RES INST ANHUI ACAD OF AGRI SCI
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[0003] The present invention aims to solve the defects of the traditional method of mainly cultivating freshwater shrimp in ponds, and provides a cultivation method that improves the commodity specifications and commercial rate of freshwater shrimp in ponds
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Embodiment 1
[0147] 1. Pond conditions
[0148] Adjacent to Nanyi Lake, choose 4 ponds with areas of 2.5 mu, 3 mu, 2 mu and 3 mu respectively, which are recorded as 1#, 2#, 3# and 4# respectively. The bottom of the pond is flat and can store water for 1.2-1.5 m, the slope ratio is 1:4, the bottom mud is loamy, has a perfect water inlet and drainage system, the pond ridge is clean and free of weeds, and equipped with microporous pipeline oxygenation facilities. The pond is detailed as figure 1 As shown, the sequence numbers in the figure are 1 pond. 2 pond ridges. 3 slopes (slope ratio 1:3-5), 4 water plants, 5 blowers. 6 oxygenation main pipeline. 7 Oxygenation flexible pipe. 8 nanometer aeration tube.
[0149] 2. Clear pond
[0150] On June 20, 2014, the pool was drained and exposed to the sun for 15 days until the bottom of the pool turned white and cracked, and the bottom of the pool was leveled at the same time. On July 5, 2014, 30cm of water was poured in, and 20kg of tea meal...
Embodiment 2
[0203] 1. Pond conditions
[0204] Adjacent to the Guxi River, choose 4 ponds with an area of 5 mu, 4 mu, 4 mu and 6 mu respectively, which are recorded as 1#, 2#, 3# and 4# respectively. The bottom of the pond is flat and can store water for 1.2-1.5 m, the slope ratio is 1:3, the bottom mud is loamy, has a complete water inlet and drainage system, the pond ridge is clean and free of weeds, and equipped with microporous pipeline oxygenation facilities.
[0205] 2. Clear pond
[0206] On June 14, 2014, the pool was drained and exposed to the sun for 20 days until the bottom of the pool turned white and cracked, and the bottom of the pool was leveled at the same time. On July 4, 2014, 30cm of water was poured in, and 25kg of tea meal was selected per mu. After soaking for 24 hours, the pulp was melted and sprinkled in the whole pond to completely remove wild fish, snails, eels, loaches, and leeches in the pond.
[0207] On January 25, 2015, the water in the pond was drained ...
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Abstract
The invention provides a breeding method for improving the commercial specification and the commercial rate of freshwater shrimps. The breeding method comprises the following steps: clearing a pond, and planting cold-resistant waterweeds; putting young shrimps bred in winter and spring; catching the freshwater shrimps for marketing for the first time; catching the freshwater shrimps for marketing for the second time; clearing the pond, and planting high-temperature-resistant waterweeds; putting young shrimps bred in summer; replacing bottom-layer water of the pond, and spreading quicklime, a bottom-sediment improver and an organic acid detoxifying agent into the pond; when the content of dissolved oxygen of the pond is 3 mg/L or less, introducing oxygen into the pond; and alternately applying the bottom-sediment improver and the organic acid detoxifying agent, and catching all the freshwater shrimps in the pond for marketing. The breeding method has the following beneficial technical effects: through technological innovation in the aspects of control of water quality, a stocking manner of the young shrimps, planting of the waterweeds, feed selection and feeding, catching, etc., a proper shrimp load density of the pond is maintained, and the survival rate of the freshwater shrimps is improved. Through technical measures of the invention, a unit net profit reaches 5000 to 8000 yuan which is 2 to 4 times of the unit net profit of traditional breeding.
Description
technical field [0001] The invention relates to a method for cultivating freshwater prawns, in particular to a method for cultivating freshwater prawns with improved commodity specifications and commercial rates. Background technique [0002] Freshwater prawn, scientific name Macrobrachium nipponense (Macrobrachium nipponense), also known as river prawn, belongs to the long arm prawn family and the genus Macrobrachium. It is mainly distributed in China, Japan, the Korean Peninsula, Vietnam, Malaysia, and the Russian Far East in Asia. In recent years, it has gradually spread to Singapore, the Philippines, Uzbekistan, southern Iraq, Moldova, Kazakhstan, and Iran. In my country, green shrimps are widely distributed all over the country, especially in East China and South China. The main production areas are mainly distributed in Jiangsu, Anhui, Zhejiang, Hubei, Jiangxi, Shanghai and other places in the middle and lower reaches of the Yangtze River. The meat of the shrimp is te...
Claims
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