CN104663551A - Breeding method for grass carp fingerlings - Google Patents
Breeding method for grass carp fingerlings Download PDFInfo
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- CN104663551A CN104663551A CN201510124162.0A CN201510124162A CN104663551A CN 104663551 A CN104663551 A CN 104663551A CN 201510124162 A CN201510124162 A CN 201510124162A CN 104663551 A CN104663551 A CN 104663551A
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention relates to the field of grass carp feeding, in particular to a breeding method for grass carp fingerlings. The method comprises the following steps: planting waterweeds in a cultivation pond for breeding the grass carp fingerlings, wherein the waterweeds comprise eel grass, hornwort and hydrilla varticillata; feeding fries in the cultivation pond with baits until the fries grow into the grass carp fingerlings. The breeding method for the grass carp fingerlings, provided by the invention, has the advantages that by planting the three waterweeds namely the eel grass, the hornwort and the hydrilla varticillata in the cultivation pond, the waterweeds interact with the grass carp fries in the growth process, the bred grass carp fingerlings are good in physique and exuberant in vitality, and the liver and gall syndrome cannot be caused in the growth process and the subsequent cultivation process.
Description
Technical field
The present invention relates to grass carp and raise field, in particular to a kind of breeding method of Grass carp.
Background technology
Grass carp is China's important cultivation fish products kind, and hinterland grass carp output generally accounts for about 40% of large fresh-water fishes total amount.The Grass carp of the sufficient excellent quality of quantity is the important guarantee realizing this general layout.
Grass carp liver and gall syndrome at present mainly supports the common and disease that harm is larger in grass carp pond, is mainly in the intensive culture high yield pool, main harm Grass carp and adult fish.Early May starts to cause grass carp dead, and morbidity pond fish is dead without obvious peak period, but the course of disease is longer, and it is high to repeat the incidence of disease; Deposit the lethality of pool adult fish and large size fingerling higher than small dimension fingerling.Pond condition and bait identical, breeding density is larger, and lethality is higher, and comparatively refractory treat, Yin Qichang is with the symptom such as gill rot, red skin again, easy mistaken diagnosis.
Find after deliberation, grass carp liver and gall syndrome morbidity grass carp liver and gall syndrome pathogenic factor mostly constantly increases for raiser's cultivation density in breeding process, water quality environment deterioration, that the factor such as mismanagement causes fish physique to weaken is sick.This sick occurrence cause is more complicated, mainly contains following three kinds of factors:
1. 1. raiser is for reducing costs for feed factor, and collaboration feed pursues low price simply, and feed Middle nutrition composition is incomplete, and vitamin content does not reach the demand of healthy fish growth, causes hypovitaminosis, produces disease of the liver; 2. spring, water temperature was low, and grass carp metaboilic level is low, and blindly strengthen daily ration, feeding quantity, the nutriment that grass carp is absorbed has exceeded normal psychological need, causes Nutrition and Metabolism bad, and fat and hepatopathy appear in body fat accumulation; 3. long-term excessive interpolation medicine in pharmaceutical chemistry is taken orally in prevention fish disease.Do not note feed keeping, feed moldy metamorphism, the aflatoxins of the feed generation of the moldy metamorphism that makes moist and nitrato compound etc. can produce disease of the liver; 4. the nutritive index of feed does not mate with cultivation object, and the nutritive indexs such as protein are too high.As the bream etc. that grazes with Carassius auratus feed.
2. environmental factor pond use for many years, non-desilting, at the bottom of pond, mud is thickening, and pond shoals; Pond water depth deficiency before July, pond condition does not reach the requirement of intensive culture high yield, and blindly increase breeding density and daily ration, feeding quantity, water quality adjustment does not catch up with, and causes pond environment to worsen; Frequent drug abuse causes noxious material accumulation in pond, makes grass carp chronic poisoning damage liver.In adverse circumstances, grass carp metabolism declines, and immunity weakens, and easy pathogen infection causes death.
3. medicine factor is based on chemicals at present on fish disease prevention and cure, and the prolonged and repeated Use out of range of chemicals can cause drug induced hepatic injury.As terramycin, the former part Long-Time Service of grace promise can cause hepatic lesion; Chloramphenicol Long-Time Service can cause jaundice and liver fatty infiltration, even hepatonecrosis; Long-Time Service furazolidone, can make liver be badly damaged, and degeneration of liver cells is downright bad, causes fish body to accumulate ascites etc., thus preventing and curing of fish disease to be accomplished suit the remedy to the case, alternatively administered, avoid frequent excessive use medicine, particularly forbidden drugs.
Application number is 201410380422.6 disclose a kind of cultural method improving grass carp quality, and the method carries out mixing by manufactured feed collocation green grass to throw something and feed, and wherein, manufactured feed also coordinates Chinese herbal and crude drugs preparations to throw something and feed.But because Grass carp is in cultivation, fry individuality used is little, absorb not good to Chinese herbal and crude drugs preparations, therefore, the method is not also suitable for the cultivation of Grass carp.In view of this, special proposition the present invention.
Summary of the invention
The object of the present invention is to provide a kind of breeding method of Grass carp, it is best in quality that the method cultivates the Grass carp obtained, between early stage culture period and all can not there is the symptom of liver and gall syndrome in follow-up incubation.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A breeding method for Grass carp, in the culturing pool cultivating Grass carp, plant pasture and water, described pasture and water comprise eel grass, hornwort and hydrilla verticillata;
Fry in described culturing pool is thrown something and fed bait, to growing up to Grass carp.
The breeding method of Grass carp provided by the invention, by planting these three kinds of pasture and water of eel grass, hornwort and hydrilla verticillata in culturing pool, pasture and water and grass carp seedling interact in process of growth, cultivate the Grass carp physique obtained good, vitality is vigorous, in process of growth and in follow-up breeding process, all there will not be liver and gall syndrome.
For the ease of management and operation, preferably, the area of described culturing pool is 2 mu-10 mu.
In order to provide broader living environment to grass carp in process of growth, be easy to the growth of grass carp, preferably, the degree of depth of described culturing pool is not less than 2 meters, smooth and mud is no more than 30cm at the bottom of pond.Owing to planting pasture and water in water body, and in order to pasture and water growth needs, at the bottom of pond, the thickness of mud is generally no less than 5cm.
Preferably, described culturing pool, before cultivation Grass carp, also comprises: select culturing pool, described culturing pool tans by the sun at the bottom of pond after doing pond; Sterilize after described culturing pool adds water, then plant pasture and water.
Tanning by the sun at the bottom of pond is organic substance decomposing in order to accelerate at the bottom of culturing pool, makes loosing soil at the bottom of pond, improves pond fertility, and reduces disease.Culturing pool generally selects pond, if the pond of Grass carp is cultivated in plan next year, dry pond is tanned by the sun at the bottom of pond in the winter time.In order to reach the effect of being exposed to the sun at the bottom of pond fully, preferably, the number of days tanned by the sun at the bottom of pond is 10-20 days.
Be exposed to the sun after culturing pool, then add water 10cm-20cm select the weather continuous fine period with the clear pond sterilization of quicklime water.
For the ease of management, be convenient to the operation of cultivating, culturing pool also should possess following condition: the water yield at water source is sufficient, water quality is good and meet water quality standard for fishery (GB 11607-1989) requirement; Enter drainage ditch unimpeded and set up separately; Road traffic is convenient, and the ridge, pond is intact.
Strengthen effect to make to reach between pasture and water and grass carp better collaborative, preferably, the cultivated area ratio of described eel grass, hornwort and hydrilla verticillata is 1-3:0.5-1.5:0.5-1.5.
More preferably, the cultivated area ratio of described eel grass, hornwort and hydrilla verticillata is 1.5-2.5:1:1.
Most preferably, the cultivated area ratio of described eel grass, hornwort and hydrilla verticillata is 2:1:1.
In order to the space of Appropriate application culturing pool, and reach the better interaction of pasture and water and fry, ensure the healthy and helpful growth of fry, preferably, in described culturing pool, the breeding density of described fry is 4200 tail-5000 tails/mus.Be more preferably 4500-4700 tail/mu.
Strengthen effect to make to reach between pasture and water and grass carp better collaborative, preferably, the cultivated area of described pasture and water is not less than 60% of the described culturing pool gross area.
More preferably, the cultivated area of described pasture and water is not less than 80% of the described culturing pool gross area.
Pasture and water, in process of growth, by the food utilization of the metabolite of grass carp and some remnants, can cleaning of the growing environment of grass carp; The maintenance of pasture and water to water temperature has certain effect, and the growth for grass carp provides suitable temperature environment; Pasture and water are when carrying out photosynthesis, and the oxygen of release is the source that grass carp provides respiratory oxygen; And at the Later growth of grass carp, the part bait of grass carp is pasture and water, not only save feed, reduce aquaculture cost, and grass carp eats part pasture and water, pasture and water are that grass carp provides better nutrient component, and some the undesirable substance metabolism in grass carp body are fallen, and make the better healthy growth of grass carp.
Preferably, described fry be with clear water throw something and feed soya-bean milk breeding method obtain, the length of described fry is 2.5-3.5cm.The fry physique that the method is cultivated is comparatively strong, is beneficial to transport, can adapt to the growing environment in culturing pool better and faster.
Preferably, described fry put in a suitable place to breed to before described culturing pool through intensive exercise, the fry put in a suitable place to breed is in the same size, physique is healthy and strong, anosis without wound, rapidly travelling.
The fry raised to prevent from putting into culturing pool carries other cause of disease materials, first carries out disinfection to fry.Preferably, described fry is put in a suitable place to breed with after Operand sterilization.
In order to make pasture and water better grow, further, plant the initial stage of described pasture and water, the water depth in described culturing pool is no more than 30cm, and the growth along with pasture and water is annotated filtered new water gradually.
In general, start kind of (moving) Ching Ming Festival around and plant pasture and water, eel grass can be sowed, and hornwort and hydrilla verticillata are because of its seed source difficulty in enormous quantities, so generally take trasplanting method on producing, general roughly subregion when three kinds of pasture and water kinds (moving) are planted.Eel grass is planted in limit, pond, and hornwort and hydrilla verticillata then subregion are planted in water body.
For the ease of the input of bait, further, when the depth of water of described culturing pool is 40cm-50cm, build a bait table for every 2 mu-3 mu.
Preferably, bait of throwing something and feeding described in is specially:
Throw something and feed in early days rotten shape feed, the protein content of described rotten shape feed is 26%-28%, every ten thousand tail fish day feeding volume 0.5-1.0 kilogram, sooner or later respectively throws something and feeds 1 time;
When described fry grows to 5.5-6.5cm, the pellet of the diameter 1.3-1.7mm that throws something and feeds, protein content is wherein 25%-27%, day bait rate 8-12%, sooner or later respectively throws something and feeds 1 time;
When described fry grows to 9.5-11cm, the pellet of the diameter 1.8-2.2mm that throws something and feeds, protein content is wherein 25%-27%, and day bait rate 3%-5%, morning and evening respectively throw something and feed 1 time.
The feed of throwing something and feeding is the feed for grass carp seedling common on market.Pasture and water in fry growth to the later stage starts to ingest pond, throw the corresponding minimizing of feed.
In the process of cultivating Grass carp, also carry out correspondingly feeding and management, be specially:
Every day patrols the pool sooner or later, and understanding pond pasture and water grow SEA LEVEL VARIATION and fry ingests and active situation; Along with the growth of fry, for keeping its good growing space, filling in every ten days is (10cm-20cm) new water once; Based on correspondence day in period bait rate, suitably increase according to Changes in weather situation or reduce feedstuff feeding amount; During water temperature 20 DEG C, select the continuous sunny period, with Operand or chlorine dioxide, pond waters is sterilized, generally monthly, until terminate October; Find fry ingest poor, travelling abnormal, when even occurring dead, answer express analysis reason, take effective ways to be solved.
After entering September, the pasture and water in fishpond are ingested by fingerling and reduce, and daily ration, feeding quantity increases rear residual bait and ight soil increase in addition, Chi Shui is caused to grow fat gradually, plankton quantity increases, and now, throws in 8cm-10cm flower silver carp fingerling (variegated carp accounts for 15%) 80 tail-100 tail for every mu.
Therefore, in order to the water body in pond is purified, to provide a kind of cleaner Grass carp growing environment, preferably, described fry rearing is to the later stage of Grass carp, every mu of described culturing pool throws in 8cm-10cm flower silver carp fingerling 80 tail-100 tail, and wherein, the quantity of variegated carp accounts for the 10-20% of total flower silver carp fingerling.
Start point kind divider lattice the last ten-days period in November and survive the winter in pond.
Compared with prior art, beneficial effect of the present invention is:
(1) breeding method of Grass carp provided by the invention, specificly select these several pasture and water of eel grass, hornwort and hydrilla verticillata, throw feed to feed simultaneously, the Grass carp physique obtained is good, vitality is vigorous, in process of growth and in follow-up breeding process, all there will not be liver and gall syndrome;
(2) the present invention's also specific total cultivated area defining the breeding density of fry, the cultivated area ratio of different pasture and water and pasture and water, to promote the quality of Grass carp further;
(3) the present invention also to carry out disinfection at the bottom of pond, to Chi Zhongshui by being exposed to the sun and selects specific fry to reduce the generation of disease;
(4) the present invention is also by the mode of bait of specifically throwing something and feeding, and the growth for fry provides sufficient nutriment;
(5) the present invention is in fry rearing to Grass carp, and Chi Shui grows fat gradually, and plankton quantity increases, by throwing in the flower silver carp fingerling of some, to purify water body.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturer suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, being can by the conventional products of commercially available acquisition.
Embodiment 1
1, pond condition and preparation:
The water yield at water source is sufficient, water quality is good and meet water quality standard for fishery (GB 11607-1989) requirement; Enter drainage ditch unimpeded and set up separately; Road traffic is convenient; Pond area 2 mu every mouthful, intact, most high point, the ridge, pond water depth is not less than 2 meters, smooth and mud is no more than 30cm at the bottom of pond.
Dry pond to be tanned by the sun at the bottom of pond 10 days in the winter time, then adds water to depth of water 10cm-20cm and selects the weather continuous fine period to clean up the pond sterilization with quicklime water; Start kind of (moving) before and after clear and bright and plant pasture and water, pasture and water have eel grass, hornwort and hydrilla verticillata, should roughly subregion when three kinds of pasture and water kinds (moving) are planted, the cultivated area ratio of eel grass, hornwort and hydrilla verticillata is 1:0.5:0.5, and each pond cultivated area is 60%; Plantation pasture and water initial stage Chi Shui is no more than 30cm, later along with the growth of pasture and water is annotated filtered new water gradually; During the dark 40cm-50cm of pool water within mid-May, build a bait table.
2, fry is originated and puts in a suitable place to breed
Select and to throw something and feed the fry that soya-bean milk breeding method obtains with clear water, fry neat specification, specification 2.5-3cm, physique is healthy and strong, anosis without wound, rapidly travelling, through sufficient intensive exercise, should put in a suitable place to breed, put 8400 tails in a suitable place to breed with after Operand sterilization before putting in a suitable place to breed.
3, feed and throwing something and feeding
Fry uses rotten shape feedstuff feeding in early days, and protein content is 28%, every ten thousand tail fish day feeding volume 0.5-1.0 kilogram, sooner or later respectively throws something and feeds 1 time;
When fry grows to 5.5-6.5cm, the pellet of the diameter 1.3-1.7mm that throws something and feeds, protein content is wherein 25%, day bait rate 8-12%, sooner or later respectively throws something and feeds 1 time;
When fry grows to 9.5-11cm, the pellet of the diameter 1.8-2.2mm that throws something and feeds, protein content is wherein 25%, and day bait rate 3%-5%, morning and evening respectively throw something and feed 1 time.
Corresponding feeding and management is carried out in feeding process, specific as follows:
Every day patrols the pool sooner or later, and understanding pond pasture and water grow SEA LEVEL VARIATION and fry ingests and active situation; Along with the growth of fry, for keeping its good growing space, filling in every ten days is (10cm-20cm) new water once; Based on correspondence day in period bait rate, suitably increase according to Changes in weather situation or reduce feedstuff feeding amount; During water temperature 20 DEG C, select the continuous sunny period, with Operand or chlorine dioxide, pond waters is sterilized, generally monthly, until terminate October; Find fry ingest poor, travelling abnormal, when even occurring dead, answer express analysis reason, take effective ways to be solved; After entering September, pasture and water in fishpond reduce because being ingested by fingerling, and daily ration, feeding quantity increases rear residual bait and ight soil increase in addition, causes Chi Shui to grow fat gradually, plankton quantity increases, and now can throw in 8cm-10cm flower silver carp fingerling (variegated carp accounts for 15%) 80 tail for every mu; Start point kind divider lattice the last ten-days period in November and survive the winter in pond.
Embodiment 2
1, pond condition and preparation:
The water yield at water source is sufficient, water quality is good and meet water quality standard for fishery (GB 11607-1989) requirement; Enter drainage ditch unimpeded and set up separately; Road traffic is convenient; Pond area 5 mu every mouthful, intact, most high point, the ridge, pond water depth is not less than 2 meters, smooth and mud is no more than 30cm at the bottom of pond.
Dry pond to be tanned by the sun at the bottom of pond 15 days in the winter time, then adds water to depth of water 10cm-20cm and selects the weather continuous fine period to clean up the pond sterilization with quicklime water; Start kind of (moving) before and after clear and bright and plant pasture and water, pasture and water have eel grass, hornwort and hydrilla verticillata, should roughly subregion when three kinds of pasture and water kinds (moving) are planted, the cultivated area ratio of eel grass, hornwort and hydrilla verticillata is 2:1:1, and pond cultivated area is 80% of the gross area; Plantation pasture and water initial stage Chi Shui is no more than 30cm, later along with the growth of pasture and water can be annotated filtered new water gradually; During the dark 40cm-50cm of pool water within mid-May, build 2 bait table.
2, fry is originated and puts in a suitable place to breed
Select with clear water throw something and feed soya-bean milk breeding method obtain fry, fry neat specification, specification 3-3.5cm, physique is healthy and strong, anosis without hindering, moving about rapidly, should through sufficient intensive exercise before putting in a suitable place to breed, put in a suitable place to breed with after Operand sterilization, breeding density is 9000 tails/mu.
3, feed and throwing something and feeding
Fry uses rotten shape feedstuff feeding in early days, and protein content is 26%, every ten thousand tail fish day feeding volume 0.5-1.0 kilogram, sooner or later respectively throws something and feeds 1 time;
When fry grows to 5.5-6.5cm, the pellet of the diameter 1.3-1.7mm that throws something and feeds, protein content is wherein 25%, day bait rate 8-12%, sooner or later respectively throws something and feeds 1 time;
When fry grows to 9.5-11cm, the pellet of the diameter 1.8-2.2mm that throws something and feeds, protein content is wherein 25%, and day bait rate 3%-5%, morning and evening respectively throw something and feed 1 time.
Corresponding feeding and management is carried out in feeding process, specific as follows:
Every day patrols the pool sooner or later, and understanding pond pasture and water grow SEA LEVEL VARIATION and fry ingests and active situation; Along with the growth of fry, for keeping its good growing space, filling in every ten days is (10cm-20cm) new water once; Based on correspondence day in period bait rate, suitably increase according to Changes in weather situation or reduce feedstuff feeding amount; During water temperature 20 DEG C, select the continuous sunny period, with Operand or chlorine dioxide, pond waters is sterilized, generally monthly, until terminate October; Find fry ingest poor, travelling abnormal, when even occurring dead, answer express analysis reason, take effective ways to be solved; After entering September, pasture and water in fishpond reduce because being ingested by fingerling, and daily ration, feeding quantity increases rear residual bait and ight soil increase in addition, causes Chi Shui to grow fat gradually, plankton quantity increases, and now can throw in 8cm-10cm flower silver carp fingerling (variegated carp accounts for 10%) 100 tail for every mu; Start point kind divider lattice the last ten-days period in November and survive the winter in pond.
Embodiment 3
1, pond condition and preparation:
The water yield at water source is sufficient, water quality is good and meet water quality standard for fishery (GB 11607-1989) requirement; Enter drainage ditch unimpeded and set up separately; Road traffic is convenient; Pond area is 10 mu, and intact, most high point, the ridge, pond water depth is not less than 2 meters, smooth and mud is no more than 30cm at the bottom of pond.
Dry pond to be tanned by the sun at the bottom of pond 20 days in the winter time, then adds water to depth of water 10cm-20cm and selects the weather continuous fine period to clean up the pond sterilization with quicklime water; Start kind of (moving) before and after clear and bright and plant pasture and water, pasture and water have eel grass, hornwort and hydrilla verticillata, should roughly subregion when three kinds of pasture and water kinds (moving) are planted, the cultivated area ratio of eel grass, hornwort and hydrilla verticillata is 3:1.5:1.5, and pond cultivated area is 85% of the gross area; Plantation pasture and water initial stage Chi Shui is no more than 30cm, later along with the growth of pasture and water can be annotated filtered new water gradually; During the dark 40cm-50cm of pool water within mid-May, build a bait table for every 2 mu.
2, fry is originated and puts in a suitable place to breed
Select with clear water throw something and feed soya-bean milk breeding method obtain fry, fry neat specification, specification 2.5-3.5cm, physique is healthy and strong, anosis without hindering, moving about rapidly, should through sufficient intensive exercise before putting in a suitable place to breed, put in a suitable place to breed with after Operand sterilization, breeding density is 5000 tails/mu.
3, feed and throwing something and feeding
Fry uses rotten shape feedstuff feeding in early days, and protein content is 27%, every ten thousand tail fish day feeding volume 0.5-1.0 kilogram, sooner or later respectively throws something and feeds 1 time;
When fry grows to 5.5-6.5cm, the pellet of the diameter 1.3-1.7mm that throws something and feeds, protein content is wherein 27%, day bait rate 8-12%, sooner or later respectively throws something and feeds 1 time;
When fry grows to 9.5-11cm, the pellet of the diameter 1.8-2.2mm that throws something and feeds, protein content is wherein 27%, and day bait rate 3%-5%, morning and evening respectively throw something and feed 1 time.
Corresponding feeding and management is carried out in feeding process, specific as follows:
Every day patrols the pool sooner or later, and understanding pond pasture and water grow SEA LEVEL VARIATION and fry ingests and active situation; Along with the growth of fry, for keeping its good growing space, filling in every ten days is (10cm-20cm) new water once; Based on correspondence day in period bait rate, suitably increase according to Changes in weather situation or reduce feedstuff feeding amount; During water temperature 20 DEG C, select the continuous sunny period, with Operand or chlorine dioxide, pond waters is sterilized, generally monthly, until terminate October; Find fry ingest poor, travelling abnormal, when even occurring dead, answer express analysis reason, take effective ways to be solved; After entering September, pasture and water in fishpond reduce because being ingested by fingerling, and daily ration, feeding quantity increases rear residual bait and ight soil increase in addition, causes Chi Shui to grow fat gradually, plankton quantity increases, and now can throw in 8cm-10cm flower silver carp fingerling (variegated carp accounts for 20%) 80 tail for every mu; Start point kind divider lattice the last ten-days period in November and survive the winter in pond.
Embodiment 1-3 feed used is all bought from regular feed production producer.
Embodiment 1-3 is cultivated the Grass carp obtained, carry out Quality Detection, simultaneously only to adopt the Grass carp of forage feed as a control group, the result obtained is as shown in table 1.
The Quality Detection of table 1 Grass carp
As can be seen from Table 1, the breeding method of the Grass carp that the embodiment of the present invention provides, the Grass carp physique that cultivation obtains is good, and vitality is vigorous, in process of growth and in follow-up breeding process, all there will not be liver and gall syndrome.And only adopting the Grass carp of forage feed, physique is weak, delay of response, and body colour is partially white, build fertilizer is short, dead gradually in breeding process, and follow-uply cultivates Grass carp again, also easily occur dead phenomenon, finding the Grass carp analysis of death, is liver and gall syndrome.
The breeding method every mu of Grass carp provided by the invention can the high-quality Grass carp 400 kilograms-600 kilograms of production cabrage 40 grams-150 grams, and every mu of profit 2000 yuan-3000 yuan, creates very large income.Adopt the breeding method of Grass carp provided by the invention cost used 20%-30% fewer than a Grass carp of employing forage feed, save cost.
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.
Claims (10)
1. a breeding method for Grass carp, is characterized in that, in the culturing pool cultivating Grass carp, plant pasture and water, described pasture and water comprise eel grass, hornwort and hydrilla verticillata;
Fry in described culturing pool is thrown something and fed bait, to growing up to Grass carp.
2. breeding method according to claim 1, is characterized in that, the degree of depth of described culturing pool is not less than 2 meters, smooth and mud is no more than 30cm at the bottom of pond.
3. breeding method according to claim 1, is characterized in that, described culturing pool, before cultivation Grass carp, also comprises: select culturing pool, described culturing pool tans by the sun at the bottom of pond after doing pond; Sterilize after described culturing pool adds water, then plant pasture and water;
Preferably, the number of days tanned by the sun at the bottom of pond is 10-20 days.
4. breeding method according to claim 1, is characterized in that, the cultivated area ratio of described eel grass, hornwort and hydrilla verticillata is 1-3:0.5-1.5:0.5-1.5;
Preferably, the cultivated area ratio of described eel grass, hornwort and hydrilla verticillata is 1.5-2.5:1:1, most preferably is 2:1:1.
5. breeding method according to claim 4, is characterized in that, in described culturing pool, the breeding density of described fry is 4200 tail-5000 tails/mus;
Preferably, the cultivated area of described pasture and water is not less than 60% of the described culturing pool gross area, and the cultivated area being more preferably described pasture and water is not less than 80% of the described culturing pool gross area.
6. breeding method according to claim 1, is characterized in that, described fry be with clear water throw something and feed soya-bean milk breeding method obtain, the length of described fry is 2.5-3.5cm.
7. breeding method according to claim 1, is characterized in that, described fry put in a suitable place to breed to before described culturing pool through intensive exercise, the fry put in a suitable place to breed is in the same size, physique is healthy and strong, anosis without wound, rapidly travelling;
Described fry is put in a suitable place to breed with after Operand sterilization.
8. breeding method according to claim 1, is characterized in that, plants the initial stage of described pasture and water, and the water depth in described culturing pool is no more than 30cm, and the growth along with pasture and water is annotated filtered new water gradually;
Preferably, when the depth of water of described culturing pool is 40cm-50cm, build a bait table for every 2 mu-3 mu.
9. the breeding method according to any one of claim 1-8, is characterized in that, described in bait of throwing something and feeding be specially:
Throw something and feed in early days rotten shape feed, the protein content of described rotten shape feed is 26%-28%, every ten thousand tail fish day feeding volume 0.5-1.0 kilogram, sooner or later respectively throws something and feeds 1 time;
When described fry grows to 5.5-6.5cm, the pellet of the diameter 1.3-1.7mm that throws something and feeds, protein content is wherein 25%-27%, day bait rate 8-12%, sooner or later respectively throws something and feeds 1 time;
When described fry grows to 9.5-11cm, the pellet of the diameter 1.8-2.2mm that throws something and feeds, protein content is wherein 25%-27%, and day bait rate 3%-5%, morning and evening respectively throw something and feed 1 time.
10. breeding method according to claim 9, is characterized in that, described fry rearing is to the later stage of Grass carp, and every mu of described culturing pool throws in 8cm-10cm flower silver carp fingerling 80 tail-100 tail, and wherein, the quantity of variegated carp accounts for the 10-20% of total flower silver carp fingerling.
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| CN109247270A (en) * | 2018-08-07 | 2019-01-22 | 广东省实验动物监测所 | A kind of method of quick screening small test fish building pancreas fatty infiltration model |
| CN109644911A (en) * | 2019-01-11 | 2019-04-19 | 广西壮族自治区水产科学研究院 | A kind of red claw crayfish-grass carp-hydrilla verticillata ecology synthesis breeding method |
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