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Method for estimating total output of procambrus clarkii cultured in pond

A technology for total production of C. clarkii is applied to the field of estimated total production of C. clarkii in pond culture, which can solve problems such as difficulty in the type and quantity of groups of C. clarkii, and is beneficial to the preservation of seeds in ponds and the improvement of benefits. , the effect of simple operation

Inactive Publication Date: 2013-02-13
南京市水产科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Procambarus clarkii has broad prospects for industrialization. At present, Procambarus clarkii has become a new bright spot in aquaculture in my country. At the same time, there are many problems. Among them, it is generally difficult to estimate the type and quantity of Procambarus clarkii populations. Especially in a pond that has been cultured for many years, there are many types of groups, such as the seedling shrimp and juvenile shrimp of the previous year, and the seedling shrimp and juvenile shrimp of the current year, etc., and there are few relevant literature reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] Use the triangular inclined trawl to quickly drag different positions of the pond, and estimate the number of Procambarus clarkii in the pond according to the number and size of the trawl. The fishing time at the mouth of the test pond was carried out 1 week before the dry pond. If Procambarus clarkii cannot be caught during the day, it can be caught at night. There is no sale in the middle of the pond mouth, and a one-time sale in the dry pond at the end.

example 2

[0033] Use the triangular inclined trawl to quickly drag different positions of the pond, and estimate the number of Procambarus clarkii in the pond according to the number and size of the trawl. The fishing time at the pond mouth is carried out 1 month after the seedlings are released. If Procambarus clarkii cannot be caught during the day, it can be caught at night. At the pond mouth, the big ones are caught and the small ones are kept. The caught large-sized Procambarus clarkii (≥35g / tail) are sold at any time, and the small shrimps (<35g / tail) are returned to rearing.

example 3

[0035] Use the triangular inclined trawl to quickly drag different positions of the pond, and estimate the number of Procambarus clarkii in the pond according to the number and size of the trawl. The fishing time at the pond mouth is carried out 1 month after the seedlings are released. If Procambarus clarkii cannot be caught during the day, it can be caught at night. At the pond mouth, the big ones are caught and the small ones are kept. All the medium and upper-sized Procambarus clarkii (≥25g / tail) are sold, and the small shrimps (<25g / tail) are returned to rearing.

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PUM

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Abstract

The invention provides a method for estimating the total output of procambrus clarkii cultured in a pond, relating to the estimation of the total output of freshwater shrimps. The method comprises the following steps: 1. rapidly dragging different positions in a pond by a triangular inclined dragnet to fish; 2. timely recording the quality and the size of the procambrus clarkii in the dragnet; 3. fishing by utilizing the triangular inclined dragnet after the young procambrus clarkii is released for one month; 4. fishing the procambrus larkii at night because the procambrus clarkii can not be fished in the day; 5. fishing 11 procambrus larkii by utilizing the dragnet, the procambrus clarkii output of the pond is about 135kg / 667m<2>; fishing 16 procambrus larkii by utilizing the dragnet, the procambrus clarkii output of the pond is about 68kg / 667m<2>; fishing 3 procambrus larkii by utilizing the dragnet, the procambrus clarkii output of the pond is about 47kg / 667m<2>; and 6. taking the above output as a reference by farmers, storing and reserving the young procambrus clarkii in the pond, and arranging the propagation and the young procambrus clarkii complementing plan of the next year. The method reduces the cost and improves the benefits.

Description

technical field [0001] The invention discloses a method for estimating the total output of Procambarus clarkii cultured in ponds, and relates to the estimation of the total amount of freshwater shrimps. Background technique [0002] Procambarus clarkii (Procambarus clarkii), also known as red marsh crayfish, crayfish or crayfish, is native to northern Mexico and the southern United States. Crayfish genus. The shrimp has wide adaptability, strong vitality and reproductive ability, and does not require high water quality. Procambarus clarkii is delicious and nutritious. According to reports, in 100g crayfish meat, the water content is 8.2%, protein 58.5%, fat 6.0%, chitin 2.1%, ash content 16.8%, mineral matter 6.6%, and a small amount of trace elements. Especially the 5 grams of Procambarus liver (commonly known as shrimp yellow), which accounts for about 5% of the body weight, is even more delicious. Shrimp yellow is rich in unsaturated fatty acids, protein, free amino a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 陈树桥周国勤
Owner 南京市水产科学研究所