The ecological cultivation mode of grass carp seedlings

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With the rise of the grass carp frenzy, grass carp seedlings are becoming more and more tight.
Grass carp seedlings have loose scales and low survival rates for long-distance transportation. In addition, the long-distance transport of grass carp seed due to poor physical fitness, the survival rate after the injection of vaccine is also low. In order to change this passive situation, qualified farmers can cultivate grass carp seedlings.
In the cultivation process of grass carp fry, it is necessary to adopt an ecological cultivation mode and try to avoid using drugs that are easy to form drug resistance. There is no need to put too early on the time of grass carp seedlings. Do not overlook the seed quality and necessary preparations in order to seize the delivery time. The successful grass carp fry cultivation model is described below.
1. The mode of cultivating the main mode is similar to the culturing mode of carp seedlings. The differences are mainly reflected in the following aspects:
(1) Grass carp summer flower seedlings should be soaked with grass carp and summer flowers before soaking.
(2) To feed grass carp, three-stage feeding mode should be adopted for the "two-nose fine intermediate" feed. After the fish seedlings in the pond, strengthen the feeding of compound feed, and stop feeding the compound feed when the length of the grass carp seed body reaches 6 cm. This is the first “fine feeding” stage. From the end of the first "fine feeding" period to the lunar calendar, this stage is the high incidence of grass carp disease. The grass carp has the highest mortality rate at this stage, and is commonly known as "white dew off." At this stage we must strictly control the amount of feed fed. The feed is mainly based on the feed with high crude fiber content. If necessary, it can be used together with appropriate amount of terrestrial tender grass to control grass and fish overeating and control the long-term control of the disease. This phase is the “extensive” stage. The incidence and mortality of grass carp at this stage have been greatly reduced from the end of the white dew to the end of winter, and in order to increase the overwintering specifications and overwintering physique of grass carp, this favorable opportunity should be seized to strengthen the fortification of grass carp before winter. This phase is called the second "finishing" phase.
(3) Strengthen ecological prevention measures. The prevention of outbreaks of grass carp trichoproteriosis can be prevented by taking orally the "Kerbone King" and the ecological prevention measures such as hanging eucalyptus branches in the pool. Normally, the disinfection of pool water should be mainly lime, and try to avoid the use of fishery drugs that are resistant to drug resistance.
2. Cultivating mode This cultivation mode is to put grass carp and summer seedlings in adult fish breeding ponds, and to use the plankton and feed debris in adult fish ponds to cultivate grass carp seedlings without additional feeding. This model is low-cost and easy to promote. During the cultivation of grass carp fry, attention should be paid to the following points:
(1) The use of insecticides is prohibited within 7 days before and after the start of fry feeding in order to prevent fish fry abnormalities.
(2) It is not necessary to feed special feeds for seedlings. Some feeds such as fine rice bran and wheat bran can be added to the general feed.
(3) Use tight mesh when catching fish in winter to prevent grass carp damage.

High Polymer Emulsifier

1. Product name:

AKD High Polymer Emulsifier

2. Product introduction:

AKD high polymer emulsifier (instead of traditional cationic starch based) is a kind of cationic polymer product developed by our technical department,which is the initiative developed product in the market.It can not only emulsify AKD Wax,but also proteched the AKD colloid dispersion and aid retention,it also can increase AKD sizing efficiency(2%-8%).It can get the high stability and better fixing effect AKD emulsion by mechanical stirring,in the meantime it greatly decrease AKD hygrolysis during storage and sizing process.Final AKD Emulsion shelf time is about 6 months which is longer than starch emulsified AKD emulsion.The final AKD Emulsion also has quicker curing effect.

3.Specification and Index:

Item

Specification

Appearance

light yellow viscosity liquid

Solid content

40%min

Viscosity,mPa.s,25°C

2000-10000 mPa.s

pH value

2-5

shelf life

6 months


4. Application:

This Emulsifier greatly restricts the AKD hydrolysis and the migration aptitude.It can replace the starch based emulsifier and AKD Curing Agent,at the same time decrease the AKD WAX using quantity.The final AKD Emulsion by this high polymer emulsifier can realize 80% sizing effect after paper machine,and almost totally realize after rewinding,which can let the paper immediately get the good water resistance effect,so less surface sizing agent in size press can fulfill all the sizing requirement.For detail using method,please contact Greatland Chemicals Co.,Ltd.

5. Package and storage:

It should be stored in the warehouse with dry and cool condition protected from frozen and sunlight directly. The temperature should be below 30°C.

Packing with 200kg, 1000kg/drum.

High Polymer Emulsifier

High Polymer Emulsifier,40% High Polymer Emulsifier,AKD High Polymer Emulsifier,AKD Emulsifying Agent

Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com