CN106359200A

CN106359200A - High-density cultivation method for improving grass carp stress resistance

Info

Publication number: CN106359200A
Application number: CN201610938645.9A
Authority: CN
Inventors: 王玉宽
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-10-25
Filing date: 2016-10-25
Publication date: 2017-02-01

Abstract

The invention belongs to the technical field of aquaculture and particularly relates to a high-density cultivation method for improving grass carp stress resistance. Grass carp are cultivated in a net cage with a height of 1.6-2.2 m, an aerator is used in the using process and matched with sodium peroxide oxygenates, so that dissolved oxygen is maintained within a range of 3.8-6 mg/L, and the pH of cultivation water is controlled to be 8.2 to 8.4. The grass carp maintain good basal body immunity in a high-density cultivation state; through matching action of tea tree pollen and sophora alopecuroides and other raw materials, the concentration of cortisol in basal body serum is reduced, so that the grass carp have high stress resistance under corresponding conditions, the grass carp maintain growth performance under high density, a basal body metabolism function is promoted, the protein absorption and conversion capability of protein is improved, the protein density of grass carp muscle fibers is increased, the flesh tightness of the grass carp is increased, the flesh greasy sense is reduced, and a health care effect and taste of the grass carp are improved.

Description

A kind of high-density breeding method improving Ctenopharyngodon idellus anti-stress

Technical field

The invention belongs to technical field of aquaculture is and in particular to a kind of high-density breeding side of raising Ctenopharyngodon idellus anti-stress Method.

Background technology

Ctenopharyngodon idellus are the conventional food of China resident, are the important sources that human body protein is taken in, carrying with living standard Height, people put forward higher requirement to the nutrition of Ctenopharyngodon idellus and mouthfeel, and common grass carp has fishy smell when edible, have impact on mouth Sense, reduces the quality of Ctenopharyngodon idellus, modernizes extensive fishery feeding manner, while improve speed of production, also brings perhaps Many problems, fishery -ies product quality reduces and is susceptible to various diseases, with the deterioration of environment, with the expansion of cultivation density, When running into very much stressors stimulation in breeding process, not only affect the normal growth of Fish, serious also results under immunologic function Fall, and then diseases induced lead to death it is therefore desirable to the research further how improving Ctenopharyngodon idellus anti-stress.

Content of the invention

The purpose of the present invention is for existing problem, there is provided a kind of high-density breeding side of raising Ctenopharyngodon idellus anti-stress Method.

The present invention is achieved by the following technical solutions: a kind of high-density breeding method improving Ctenopharyngodon idellus anti-stress, The net cage for 1.6-2.2m for the height cultivates, coordinates sodium peroxide oxygenation agent with aerator in feeding process, make dissolved oxygen amount It is maintained in the range of 3.8-6mg/l, control cultivation water ph value to be 8.2-8.4；

When Ctenopharyngodon idellus weight is 30-40g, the input density in net cage be 200-250 tail/, the day feeding volume of feedstuff is grass The 5.5-6.5% of fish weight, the protein content of feedstuff is 38-42%；

When Ctenopharyngodon idellus weight is 95-105g, the input density in net cage be 120-140 tail/, the day feeding volume of feedstuff is grass The 4.8-5.4% of fish weight, the protein content of feedstuff is 36-38%；

When Ctenopharyngodon idellus weight is 240-260g, the input density in net cage is 350-380 tail/mu, and the day feeding volume of feedstuff is The 1.8-2.4% of Ctenopharyngodon idellus weight, the protein content of feedstuff is 32-34%；

Wherein, described feedstuff is made up of the raw material of following weight portion: imported fish meal 20-35, puffing Semen sojae atricolor 18-20, bean cake 20- 30th, corn germ cake 8-15, phosphatide oil 2-6, overflow contracting rhombus algae 1-4, Os Bovis seu Bubali powder 5-8, tea plant pollen 1-2, Radix Sophorae Flavescentiss 2-3, illawarra mountain pine Must 4-7, garlicin 2-4, Herba Glechomae 8-15, potassium dihydrogen phosphate 0.5-0.8, ferrous sulfate 0.2-0.4, Sophora Alopecuroides L. 7-10, quality Concentration is 60% choline chloride 1-2.

As further improvement of these options, feed feedstuff described day and feed 4-5 time for one day.

As further improvement of these options, the proteinaceous weight content of described bean cake is 48-55%.

As further improvement of these options, described feedstuff water content is 8.6-9.8%, and grain diameter is 1.5- 4.5mm.

The present invention has the advantage that compared to existing technology in the present invention and arranges corresponding cultivation in Ctenopharyngodon idellus Different Weight Density, limits corresponding cultivating condition and feedstuff so as to Ctenopharyngodon idellus can be made in high density in respective stage effectively utilizes feedstuff simultaneously Cultivation state in keep preferable matrix immunity, by tea plant pollen and Sophora Alopecuroides L. and other raw material mating reactions, reduce The concentration of hydrocortisone in matrix serum, so that Ctenopharyngodon idellus have stronger anti-stress ability so as to be maintained under corresponding conditionses Growth performance under high density, promotes the metabolic function of matrix, improves it to the absorption of protein and conversion capability, makes grass The protein density of fish tissue fiber increases, thus increasing the compactness of its meat, reduces the greasy feeling of meat, improves Ctenopharyngodon idellus Health-care effect and mouthfeel.

Specific embodiment

Embodiment 1

A kind of high-density breeding method improving Ctenopharyngodon idellus anti-stress, cultivates in the net cage for 1.6-2.2m for the height, is raising During with aerator coordinate sodium peroxide oxygenation agent, so that dissolved oxygen amount is maintained in the range of 3.8-6mg/l, control cultivation water ph value For 8.2-8.4；

Wherein, described feedstuff is made up of the raw material of following weight portion: imported fish meal 35, puffing Semen sojae atricolor 18, bean cake 26, Fructus Maydiss The dregs of rice 14, phosphatide oil 6, contracting rhombus algae 3 of overflowing, Os Bovis seu Bubali powder 6, tea plant pollen 2, Radix Sophorae Flavescentiss 3, illawarra mountain pine palpus 5, garlicin 4, Herba Glechomae 14, phosphorus Acid dihydride potassium 0.6, ferrous sulfate 0.4, Sophora Alopecuroides L. 10, mass concentration are 60% choline chloride 2；

Wherein, described feedstuff is made up of the raw material of following weight portion: imported fish meal 28, puffing Semen sojae atricolor 20, bean cake 30, Fructus Maydiss The dregs of rice 8, phosphatide oil 4, contracting rhombus algae 2 of overflowing, Os Bovis seu Bubali powder 6, tea plant pollen 2, Radix Sophorae Flavescentiss 3, illawarra mountain pine palpus 4, garlicin 2, Herba Glechomae 12, phosphoric acid Potassium dihydrogen 0.8, ferrous sulfate 0.2, Sophora Alopecuroides L. 8, mass concentration are 60% choline chloride 1；

When Ctenopharyngodon idellus weight is 240-260g, the input density in net cage is 750-800 tail/mu, and the day feeding volume of feedstuff is The 1.8-2.4% of Ctenopharyngodon idellus weight, the protein content of feedstuff is 32-34%；

Wherein, described feedstuff is made up of the raw material of following weight portion: imported fish meal 20, puffing Semen sojae atricolor 20, bean cake 28, Fructus Maydiss The dregs of rice 12, phosphatide oil 2, contracting rhombus algae 1 of overflowing, Os Bovis seu Bubali powder 8, tea plant pollen 2, Radix Sophorae Flavescentiss 3, illawarra mountain pine palpus 5, garlicin 3, Herba Glechomae 10, phosphorus Acid dihydride potassium 0.6, ferrous sulfate 0.3, Sophora Alopecuroides L. 8, mass concentration are 60% choline chloride 2.

Wherein, feed feedstuff described day to feed 4-5 time for one day.

Wherein, the proteinaceous weight content of described bean cake is 48-55%.

Wherein, described feedstuff water content is 8.6-9.8%, and grain diameter is 1.5-4.5mm.

Setting experiment, selects 2000 and is in a good state of health, and body weight is the juvenile fish of 50 ± 2g as experimental subject, average mark Become two groups, using in above example 1 method cultivate as experimental group, conventionally cultivate as a control group, cultivate to Terminate during Ctenopharyngodon idellus average out to 1000 ± 50g, its upgrowth situation and Ctenopharyngodon idellus quality be compared:

Table 1 upgrowth situation

Growth performance	Experimental group	Matched group
			Coefficient of condition	1.87	1.92
Feed coefficient	1.96	2.23
			Survival rate (%)	97.6	94.2

Certain optimization is had by the feed coefficient that data in table 1 can be seen that Ctenopharyngodon idellus, survival rate is higher than matched group, but its grossness Degree is but slightly worse than matched group, and Ctenopharyngodon idellus of the present invention, during high-density breeding, reduce the throwing of feedstuff after Ctenopharyngodon idellus weight more than 240g Hello, forage protein content is high, and survival rate also substantially increases simultaneously, improves the utilization rate of feedstuff, optimize the cultivation knot of Ctenopharyngodon idellus Structure.

Table 2 Ctenopharyngodon idellus flesh quality

Main component	Experimental group	Matched group
			Protein (%)	77.54	79.21
Crude fat (%)	3.19	8.65
			Total sugar (%)	0.52	0.78
Ash (%)	5.36	4.25
			Calcium (mg/kg)	783.56	457.24
Phosphorus (mg/kg)	2736.52	2140.83

Fish meat protein, total sugar content in matched group and experimental group be can be seen that by data in table 2 essentially identical, and crude fat Content is significantly less than matched group, illustrates to which reduce the greasy degree of Ctenopharyngodon idellus muscle, increases mouthfeel, the wherein increase of calcium, phosphorus content, Improve the health care of Ctenopharyngodon idellus.

Claims

1. a kind of high-density breeding method improving Ctenopharyngodon idellus anti-stress is it is characterised in that be the net cage of 1.6-2.2m in height Middle cultivation, coordinates sodium peroxide oxygenation agent with aerator in feeding process, so that dissolved oxygen amount is maintained in the range of 3.8-6mg/l, Cultivation water ph value is controlled to be 8.2-8.4；

2. as claimed in claim 1 a kind of improve Ctenopharyngodon idellus anti-stress high-density breeding method it is characterised in that described day throw Feed material feeds 4-5 time for one day.

3. as claimed in claim 1 a kind of high-density breeding method improving Ctenopharyngodon idellus anti-stress it is characterised in that described bean cake Proteinaceous weight content be 48-55%.

4. a kind of high-density breeding method improving Ctenopharyngodon idellus anti-stress as any one of claim 1-3, its feature exists In described feedstuff water content is 8.6-9.8%, and grain diameter is 1.5-4.5mm.