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Method for relay breeding of Ictalurus punctatus

A technology for stocking channel catfish and fingerlings, which is applied to chemical instruments and methods, fish farming, and special treatment targets, can solve problems such as vulnerability to control, disadvantages of farmers' bargaining power, and reduced comprehensive economic benefits of aquaculture ponds. Mutual rubbing, improving comprehensive economic benefits and ecological benefits, and reducing the effect of fish load

Pending Publication Date: 2021-08-24
江苏省渔业技术推广中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of processed goods and stupid goods is easily controlled by the processing enterprises, and the bargaining power of farmers is at a disadvantage
Due to the catfish's predation habit and the feed management level of the farmers, catfish of the above specifications exist in different proportions in the same adult fish breeding pond, and farmers can only catch catfish of standard specifications. The fish are selected for sale, and the rest of the catfish of different specifications can only be sold at a low price as "commodity" catfish, which obviously reduces the comprehensive economic benefits of the breeding ponds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 and Example 2 were carried out at the base of Nantong Hualiu Aquatic Products Co., Ltd., and Example 3 was carried out at the base of Weihua Aquatic Products Breeding Factory in Xiangshui County; Comparative Example 1 was carried out at the base of Nantong Hualiu Aquatic Products Co., Ltd., and Comparative Example 2 was carried out at the base of Nantong Hualiu Aquatic Products Co., Ltd. It was carried out at the base of Weihua Aquatic Products Breeding Factory in Xiangshui County.

[0051] The aquatic fry used in the above-mentioned examples and comparative examples, inputs such as polyferric sulfate, potassium persulfate, catfish feed compound feed and the like are all available from commercial purchases.

[0052] Example 1

[0053] The implementation site is at the base of Nantong Hualiu Aquatic Products Co., Ltd., and the implementation time is from January 2020 to December 2020. The pond number is North 1#, with an area of ​​59 acres, a pond depth of 2...

Embodiment 2

[0099]The implementation site is the 2# pond in the north of the base of Nantong Hualiu Aquatic Products Co., Ltd. The implementation time is from January 2020 to December 2020. The area of ​​the pond is 48 mu, the depth of the pond is 2.5m, the water depth is 1.2m-2.4m, and the bottom silt is ≤15cm , the water inlet and drainage are convenient, and the water quality of the water source meets the water quality requirements of freshwater aquaculture; the pond is equipped with a 4kW power air feeding bait feeding machine and a 280W power single box type bait feeding machine, and is equipped with 5 3kW impeller type aerators ; The preparatory work before the seed is stocked in a suitable place is with embodiment 1.

[0100] Fish species, specifications, and time are the same as in Example 1, and the stocking density per mu of each aquatic seedling is: 400 tails of pomfret, 40 tails of silver carp species, 70 tails of bighead carp species, and 500 tails of catfish species in the fi...

Embodiment 3

[0119] The implementation site is at the base of Weihua Aquatic Products Breeding Factory in Xiangshui County. The implementation time is from January 2020 to December 2020. The pond number is A1 and the area is 150 mu; the depth of the pond is 2.8m, and the water depth is 1.2m-2.4m. Silt ≤ 12cm, easy drainage, water quality meets freshwater aquaculture water quality requirements; equipped with a 4kW power wind feeding machine and two 280W single-box bait feeding machines, and two single box-type bait feeding machines The bait machines are arranged side by side with a distance of 50m; equipped with 10 3kW water wheel aerators.

[0120] 1. Stocking fish species

[0121] 1) The first batch of catfish farming:

[0122] Pomfret chinensis: On February 8, 350 pomfrets with a size of 15 per jin were stocked, and a total of 3,500 jin (7 yuan / jin) were stocked;

[0123] Silver carp: On February 17, 40 silver carp species with a specification of 1 catties / tail were stocked, and a tota...

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PUM

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Abstract

The invention discloses a method for relay breeding of Ictalurus punctatus. The area of a pond ranges from 40 mu to 150 mu. The method mainly comprises the steps of pond preparation, fry stocking, water quality management, aquatic product and fry capturing and the like. According to the method, large-size Ictalurus punctatus fingerlings, silver carp fingerlings and plagiognathops microlepis with proper density and specification are stocked, the ecological niches of the pond are scientifically constructed, environment-friendly water purifying agents such as polyferric sulfate, 20% potassium hydrogen persulfate and EM bacteria are reasonably applied to optimize the water quality of the pond, the occurrence rate of aquatic diseases is reduced, the use amount of fishery medicine is reduced, and the pond ecological environment and aquatic product quality safety are guaranteed; and in the breeding period of recent one year, commodity Ictalurus punctatus with high uniformity and sold specifications and other matched fishes are sold in an off-peak mode, the pond space and production efficiency are fully utilized, and the comprehensive economic benefits and ecological benefits of the pond are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and specifically relates to a method for carrying out two crops of channel catfish relay culture in a pond with an area of ​​40 mu to 150 mu within a culture period of nearly one year. Background technique [0002] In the existing catfish farming model, the breeding cycle generally takes 2.5 to 3 years from catfish fry ("centimeter seedlings") to commercial catfish with standard specifications (tail weight 2.5 catties-3.2 catties). Standard catfish fingerlings (50g / tail) are grown to standard-sized commercial catfish. The breeding cycle generally takes 1.5 to 2 years. The breeding cycle is long, the input cost is high, and the risk of breeding is high; if the breeding cycle is too long, it is not conducive to Farmers adapt to the market consumption situation in a timely manner and quickly adjust the breeding mode, and the situation of high yield but not good harvest often occurs. [0003] In a...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K61/80C02F9/14C02F103/20
CPCA01K61/10A01K61/80C02F9/00C02F1/5236C02F1/722C02F3/34C02F2103/20C02F2303/04Y02A40/81
Inventor 张朝晖刘肖汉郭闯陈静盖建军方苹
Owner 江苏省渔业技术推广中心
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