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Nursing breeding method for young loaches

A seedling and loach technology, applied in the field of loach seedling maintenance and cultivation, can solve the problems of less than 10% cultivation survival rate and unsatisfactory large-scale seedling cultivation technology, achieve high productivity, high survival rate, and avoid growth slowdown Effect

Inactive Publication Date: 2016-01-06
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of artificial propagation of loach has already matured, but the technology of large-scale seed cultivation is still unsatisfactory
The traditional breeding method of loach seedlings ignores the special habits of loach seedlings, resulting in a survival rate of less than 10%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for cultivating loach fry, the steps of which are:

[0033] 1) Pond preparation: Choose a square pond with convenient drainage and regular shape as the loach nursery pond. The bottom of the pond is flat, the slope ratio is 1:1.5, and the area is 3 mu (90m×22m); the cement hardening work in the maintenance area was completed in March 2014 , the hardened thickness is 10cm, and the area is about 1 mu (30m×22m). After the hardening is completed, set up a block, compact the bottom of the block with soil, and then soak in water for 28 or 29 or 30 or 31 or 32 days, and the pH value of the water body is 7.8;

[0034] 2) Disinfection of clear pond: on May 15, use 250kg of bleaching powder to bring water into the clear pond, and control the water depth to about 20cm;

[0035] 3) Fertilization: On May 17, increase the water depth of the cultivation pond to 50cm, select 90kg of fermented rapeseed meal, 20kg of amino acid fertilizer and 1.5kg of monoammonium phosphate. Pr...

Embodiment 2

[0045] A method for large-scale seedling cultivation of loach (loach seedling maintenance and cultivation), the steps are:

[0046] From 2014 to 2015, the applicant expanded the scale and adopted this technology in many farms such as Public Security County of Hubei Province, Shashi District of Jingzhou City, and Qichun County. The overall effect is good. The following is the specific implementation method. Main difference is the difference of cultivation season, and the cultivation season of embodiment 2 is autumn (after September).

[0047] 1) Pond preparation: Pond selection criteria, construction methods, etc. are the same as Example 1, but in order to expand the scale, we design the area of ​​the cultivation pond to be about 5 mu (95m×35m), and the area of ​​the maintenance area is about 1.8 mu (35m×35m). 35m);

[0048] 2) clear pond disinfection: on September 3, 2014, carry out clear pond with water, method is identical with embodiment 1;

[0049] 3) Fertilization: Fert...

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Abstract

The invention discloses a nursing breeding method for young loaches. The nursing breeding method includes the steps that 1, a proper young loach breeding pond is selected, water entering and water draining are convenient, and the area should range from 3 mu to 5 mu; 2, the loach breeding pond is divided into regions, wherein the area of the nursing region accounts for one third of the total area of the breeding pond, and the area of the bait organism breeding region accounts for two thirds of the total area of the breeding pond; 3, cement hardening is carried out on the nursing region, wherein cement hardening is carried out on the pond bottom and the protection slope of the nursing region; 4, the pond is cleaned and sterilized, sterilizing is carried out through bleaching powder at the time five days before the young loaches are put into the pond, and trash fishes, roes, aquatic insects, frog eggs and the like in the young loach pond are eliminated; 5, fresh water is injected after pond cleaning, the water depth is required to be 50 cm, and organic fertilizers are applied after water injecting to breed bait organisms; 6, the young loaches are put into the pond and put into the nursing region; 7, blocking nets are removed at the time two weeks after the young loaches are put into the pond, and the young loaches are distributed to the whole breeding pond; 8, the loaches are trained to eat artificial feed after the young loaches are bred for one month, and the adult loach breeding stage starts. The method is easy to implement and easy and convenient to operate, the loaches can safely live through the weakest external gill stage, and the breeding survival rate of the young loaches is remarkably increased.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for cultivating loach seedlings to improve the survival rate. Background technique [0002] Loach is one of the emerging breeding species in China in recent years. The market demand is increasing year by year, and the breeding boom is very high. Loach is a small freshwater economic fish, which is mainly distributed in East Asia. It has high nutritional value and is known as water ginseng. . However, the seed of China's loach breeding industry mainly comes from wild seed, which is mainly due to the high mortality rate in the process of large-scale cultivation of loach seed, while wild seed has the problems of being difficult to domesticate artificial feed and unstable survival rate. Therefore, loach seed cultivation has become the main bottleneck restricting the development of loach industrialization. Application publication number is that the patent of ...

Claims

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Application Information

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IPC IPC(8): A01K61/00A01K63/00A01K63/04
CPCY02A40/81A01K61/00A01K63/003A01K63/042
Inventor 樊启学张云龙吴巧婉胡伟华汪帆杨瑞斌
Owner HUAZHONG AGRI UNIV
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