CN110036948A - A kind of method of ox head porgy batch breeding - Google Patents
A kind of method of ox head porgy batch breeding Download PDFInfo
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- CN110036948A CN110036948A CN201910220397.8A CN201910220397A CN110036948A CN 110036948 A CN110036948 A CN 110036948A CN 201910220397 A CN201910220397 A CN 201910220397A CN 110036948 A CN110036948 A CN 110036948A
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- 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
- A01K61/10—Culture of aquatic animals of fish
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- 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
- A01K61/10—Culture of aquatic animals of fish
- A01K61/17—Hatching, e.g. incubators
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- 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 discloses a kind of methods of ox head porgy batch breeding, in soil pool base and bottom has the pond of mud as spawning pond, flat ceramic vessel using back-off in bottom of pond has as egg apparatus, parent population is selected and put in a suitable place to breed in thermophilic season, with female and male ratio appropriate, fertilized eggs are hatched in the aquarium of masking illumination later, fry is cultivated in fish jar.The fry that there is the method for the present invention high spawning rate, hatching high survival rate, hatching to lose is few, fry yield is big, and operating process is simple, technical characterstic easy to implement, is applicable to half mouthful of fry large-scale production for incubating fish and slabstone Type of Spawning fish.
Description
Technical field
The invention belongs to fishery breeding field, in particular to a kind of method of ox head porgy batch breeding.
Background technique
Ox head porgy category Perciformes Callichthyidae is a kind of common tropical ornamental fish type.The fish body shape approximation oval, side
Flat, milter crown protuberance, body colour is gorgeous, there is blue-green metallic luster, and raun taupe, scale reflectance is lower, milter adult
Individual is bigger than raun.Ox head porgy originates in South America, moves in tropical rain forest environment, omnivorousness, adapting to water temperature is 20~32 DEG C.
Ox head porgy reproductive habit are as follows: the first sexal maturity time was 10~12 monthly ages, the long 12~13cm of the first sexal maturity body of milter, at the beginning of raun
Long 10~the 11cm of secondary sexal maturity body, primary, oviposition 300~1000 every time of laying eggs for every 15~30 days under optimum conditions after mature
Grain, 0.6~0.7mm of ovum diameter.
The modes of reproduction of ox head porgy is known as " half mouthful incubates ", is a kind of to have protection, hatching rate and the higher breeding of survival rate
Mode.In the case where the bottom can not find the hard object such as stone as laying nest, male parent population can be excavated to bottom of pond, and searching can be with
The object or plane of fish-egg are adhered to, but because ox head porgy individual is small, mining ability is limited, such as excavates 20cm or so still without can glue
The hard object of clingfish ovum, then breeding activity can not carry out.
Very low in the probability that the fry of nature ox head porgy is grown up, main cause is that its fry specification is too small, is looked for food
Ability is poor, and prey risk is high.In artificial breeding environment, the same very little of quantity of fry is otherwise obtained, first is that if
One female one male pairing, due to the habit that it is voluntarily chosen spouse, the probability of artificial successful matching is too low, unwilled artificial pairing result
It is mutually to bait, can not breeds；Second is that voluntarily matching oviposition, fish-egg by it in cement pit using conventional population regularities mode
It is adhered to bottom of pond any position, can not manually acquire carry out artificial incubation, the opportunity for directly acquiring fry is difficult to hold, and if
It is improper that opportunity holds, and the survival rate of fry is very low, and asynchronous with the parent population oviposition in pond, catches each time, can only in pond
1~2 nest fry is collected once in a while, and acquires fry and needs the seine of full pond, all parent populations are pulled on into net, and thus parent population is just
Departing from the fertilized eggs hatched, when parent population is put back to after seine, the parent population first put back to can eat up the ovum that other fishes produce, and
The fertilized eggs hatched by seine operation damage and can also destroy, and the physiological activity of all parent populations is greatly done
It disturbs, takes a long time to restore, therefore cause not continuing to lay eggs.
Ox head porgy is cultivated in normal soil matrix fishpond, only finds the parent population of mouth containing fry once in a while for many years, it is few to capture
To the small fish for voluntarily breeding growth.The reason is that ox head porgy parent population can seldom find the hard object for being suitble to oviposition, even if excavating to bottom of pond
20cm, harder soil can not adhere to fish-egg, therefore can not breed.Fish can be adhered to by having parent population to find in pond bottom once in a while
The hard object of ovum, after hatch fish roe is released at fry and from parent population oral cavity, it is easy to be gulped down by other fishes or enemy animal
Food, survival rate are extremely low.Therefore, poultry feeders are not using normal soil matrix fishpond as ox head porgy breeding pool.
In actual production, the method that poultry feeders collect fry frequently with the breeding of cement pit collective, periodically seine cultivates
Ox head porgy, production efficiency are every 200~450 tail of annual output seedling of every tail female parent population.The shortcomings that this modes of reproduction is: 1. parent population will
Fish-egg is produced in bottom of pond any position, can not oriented acquisition progress artificial incubation；2. completing in Fish hatcheries and being released from parent population oral cavity
After releasing, it is easy to be eaten by other fishes or enemy animal, and lack the agreeable to the taste bait of fry, survival rate in cement pit
It is extremely low；3. acquisition fry requires parent populations all in pond pulling on net every time, then check whether parent population contains fry one by one, therefore
Parent population is caused to alarm, could restore at least three or four days normal, oviposition period is caused to extend, the decline of year egg laying amount；4. seine pair
The fish-egg hatched causes greatly to destroy, while causing serious harm to the subsequent breeding physiology of the parent population of the fish-egg.
In view of the problems of the existing technology, this invention address that finding a kind of side that can be improved ox head madai breeding potential
Method.
Summary of the invention
The primary purpose of the present invention is that providing a kind of method of ox head porgy batch breeding.
The technical solution used in the present invention is:
A kind of method of ox head porgy breeding, comprising the following steps:
1) it is 1:1.1~1.5 according to property ratio by the ox head porgy male at 11~23 monthly ages, female parent population, launches female to having
Property 50%~80% of parent population quantity several egg apparatus tools spawning pond, whether observed in egg apparatus tool after 7~11 days has fish-egg；
Back-off has egg apparatus tool in the spawning pond, and the distance of adjacent egg apparatus tool is 1~2m；
It, will be in egg apparatus tool and utensil with 10~15mg/L liquor potassic permanganate if 2) egg apparatus tool is attached with fish-egg
Fish-egg impregnates 1~2 minute, then by egg apparatus tool and fish-egg be transferred to surface be covered with shade hatching cylinder and logical oxygen, and
The original position of egg apparatus tool with fertilized eggs, which is mended, puts a new egg apparatus tool；
3) observation hatching cylinder fry whether membrane, carry out incubation period nursing；
If 4) feed feed within 24~26 hours after the swimming of fry level after membrane, until a length of 2~3cm of fish, entrance are next
Nurturing period；The feed for feeding fry is zooplankter, small-sized cladocera, the homogenate of cooked egg Huang；The zooplankter is to live
Body wheel animalcule, paramecium, cladocera, Copepods etc.；Zooplankter of the small-sized cladocera between 80 mesh and 150 mesh filter screens；
5) after being collected into the first nest fish-egg, check within every 2~3 days whether an egg apparatus tool has fish-egg, if egg apparatus tool is attached
Have i.e. repeatable the step 2)~step 4) of fish-egg.
Further, the tool of egg apparatus described in step (1) is flat ceramic casserole, make pottery without foot bowl, crock, Ceramic flower
Basin；
Further, step (1) male parent population is that head is obviously swelled, the male parent population of the long 12cm~16cm of body；
Female parent population is that abdomen is full, the female parent population of the long 10cm~15cm of body.
Further, spawning pond described in step (1) is the soil pool base pond or field bund pond that bottom of pond has mud.
Further, the water body pH of spawning pond described in step (1) is 6.5~7.5, and lower layer's water temperature is 26~30 in water body
℃。
Further, it is 0.5~1.5 that the male of ox head porgy described in step (1), female parent population, which are launched to spawning pond density,
Tail/m2。
Further, hatching cylinder bottom area >=0.2m described in step (2)2, the depth of water is 0.2~0.4m.
Further, hatching cylinder shade described in step (2) blocks 90%~100% illumination, keeps illumination illumination little
In 20lx.
Further, step (2) the hatching cylinder water temperature is 26~30 DEG C, higher than spawning pond lower layer water temperature to be no more than 2 DEG C
Or it is low be no more than 2 DEG C, hatching cylinder oxyty is more than or equal to 5mg/L.
The ox head porgy of above method breeding.
The beneficial effects of the present invention are:
The present invention provides the hard objects for forcing parent population to lay eggs, and are not easy to be covered by mud mud scum, spawning rate is high, hatching at
Motility rate is high, noiseless to spawning colony；The fry for hatching loss is few, and fry yield is big, and the average every tail parent population of experimental group produces seedling amount
It is 7.5 times of control group；Indoor fish jar oxygen inflatable, heat preservation, provide optimum incubation condition；The condition hatched in cylinder is imitated
Natural incubation condition ensure that hatching rate and mouth incubate stage survival rate.Fish are incubated suitable for half mouthful and non-mouth incubates the fry of fish
Large-scale production.
Specific embodiment
Embodiment 1
Implement place: China's Pearl River Fishery Research Institute of Aquatic Science Research Institute ornamental fish base
Implement the time: certain year April~October
The preparation of utensil:
Spawning pond: rectangle mire, area 180m2, depth of water 1.1m, silt depth average out to 13cm；PH7.2, late April
26 DEG C of lower layer's water temperature in water body.
Egg apparatus tool: selecting the flat ceramic casserole of diameter 13cm, tie up a cord at the handle of casserole, cord it is another
One end extends to pool side, while by casserole back-off in four sides of bottom of pond quadrangle and pond, and the spacing 1.5 of two neighboring casserole ±
0.2m puts into casserole 36 altogether.
Hatch cylinder: hatching cylinder bottom area >=0.2m2, water-storage depth 0.2m, no periods of direct sunlight is (plank, black with overcover
Cloth or black plastic film etc.) 90% or more illumination of masking, 26 DEG C of water temperature, and differ with spawning pond lower layer water temperature no more than 2 DEG C, match
Standby oxygen-increasing device, makes oxyty >=5mg/L.
The present embodiment is prepared with 40 hatching cylinders, and specification is (length) 100cm × (width) 50cm × (height) 45cm, uses Gao Meng
It is eluted with water after sour potassium solution disinfection.Each cylinder is equipped with an airstone, a pneumatic biochemical cotton filter.Hatch cylinder to connect
Oxygen increasing pump is connect, while reservoir lays in tap water 8m3, oxygen increasing pump aeration is opened, it is spare.
1) it selects parent population and is put into spawning pond
After overwintering, in the reserve parent fish at 11~23 monthly ages that outdoor tank has cultivated 20 days, it is long to select body from
12cm~16cm, health and strong, form and 60 tail of male parent population that development is normal, head is obviously swelled；It is long to select body
10~15cm, health, form and development is normal, abdomen is full 66 tail of female parent population, the property ratio of parent population is 1:1.1, choosing
Spawning pond, 0.7 tail of breeding density/m are directly placed into after good2。
2) oviposition situation inspection and fertilization ovum collecting
After male female parent population is put into spawning pond, since the 7th day, the oviposition situation of parent population is checked within every 2 days.It was opened from the 11st day
It originates existing 2 pieces of casseroles and is attached with fish-egg, be changed to check the oviposition situation of parent population daily after having fish-egg.
The egg apparatus tool (flat ceramic casserole) that collection is attached with fish-egg is placed in another water container, keeps the water in bucket
Dipped all fish-eggs, avoid direct sunlight, move bucket and egg apparatus tool to greenhouse rapidly, then that attached ovum casserole is equal number of
Hatching cylinder adds water to depth of water 35cm, opens oxygen pump, adjusts the gas output of gas stone and biochemical cotton filter to medium relatively low level.
The Spawning water of stand-by storage is blended into the bucket for being filled with fish-egg, then balance and adaptation water temperature and quality use 10mg/L permanganic acid
Potassium solution impregnates fish-egg (having together with egg apparatus) one minute, then egg apparatus is had immigration hatching cylinder and is hatched.Meanwhile it taking away
The original position of egg apparatus tool with fertilized eggs is mended and puts a new egg apparatus tool.
3) hatching of fertilized eggs
Fertilized eggs move into hatching cylinder after, open oxygen-increasing device lead to oxygen, shut out the light with shade, make illumination illumination≤
20lx, after 48 hours, observation hatching situation such as there is no fry membrane, be changed to check for every 24 hours once, until fry membrane.
When water temperature reaches 27 DEG C, 72 hours fries membrane；When water temperature reaches 28 DEG C, most of fry is equal within 48 hours
Membrane.It was found that 80% or more horizontal can swim after fry membrane 36 hours, takes attached ovum casserole away and remove light screening material.
4) fry rearing
Morning next day starts to feed fry.First half of the year zooplankter season abundant (3~June), with 240 mesh zooplankters
Net fishes for zooplankter from rich water pond, is then filtered with 150 mesh filter screens, and obtaining zooplankter, (main component is wheel animalcule, can also
Think paramecium, cladocera, Copepods etc.) and to feed fry, the second half year uses the homogenate of cooked egg Huang as starter diet.The
It feeds 6 times daily within one week, second week is used small-sized cladocera (zooplankter between 80 mesh and 150 mesh filter screens) instead and fed, often
It feeds 4 times, until fry grows to overall length 2cm, into next breeding phase.
5) after being collected into the first nest fish-egg, check within every 2 days whether an egg apparatus tool has fish-egg, if egg apparatus tool is attached with
I.e. repeatable the step 2)~step 4) of fish-egg.
Actual effect: it is collected into 416 nest of fish-egg (each egg apparatus tool is every time clutch of eggs), ovum grain number amount about 250,000 altogether
Grain hatches about 210,000 tail of fry, and harvest 2cm fry is total to about 200,000 tails, hatching rate 84%, average every tail raun year adds up numerous
Educate 3000 tail of fry.
Embodiment 2
Implement place: Beijing fishing opens flat base through Bioisystech Co., Ltd
Implement the time: certain year April~October.
The preparation of utensil:
Spawning pond: rectangle mire, area 96m2, mean depth 1.0m, mud average thickness 12cm；PH7.2,4 below the moon
25 DEG C of lower layer's water temperature in ten days water body.
Egg apparatus tool: selecting the flat ceramic casserole of diameter 13cm, and the handle of casserole ties up a cord, and the cord other end prolongs
Extend to pool side, while by casserole back-off in four sides of bottom of pond quadrangle and pond, casserole is from pool side about 80cm, between two neighboring casserole
Away from 1.5 ± 0.2m, casserole 24 are put into altogether.
Hatch cylinder: hatching cylinder bottom area >=0.2m2, water-storage depth 0.4m, no periods of direct sunlight is (plank, black with overcover
Cloth or black plastic film etc.) 90% or more illumination of masking, 30 DEG C of water temperature, and differ with spawning pond lower layer water temperature no more than 2 DEG C, match
Standby oxygen-increasing device, makes oxyty >=5mg/L.
The present embodiment prepares 24 hatching cylinders, and specification is (length) 110cm × (width) 52cm × (height) 50cm, uses permanganic acid
It being eluted with water after potassium solution disinfection, each cylinder is equipped with an airstone, and a pneumatic biochemical cotton filter connects oxygen increasing pump,
It wouldn't open, it wouldn't water storage.Reservoir lays in tap water 5m simultaneously3, oxygen increasing pump aeration is opened, it is spare.
1) it selects parent population and is put into spawning pond
After overwintering, from 11~23 monthly age parent populations that outdoor tank has cultivated 15 days, select the long 12cm of body~
16cm, health and strong, form and 40 tail of male parent population that development is normal, head is obviously swelled；Select body it is long by 10~
12cm, health, form and development is normal, abdomen is full 45 tail of female parent population, the property ratio of parent population is 1:1.1, after choosing
It is directly placed into spawning pond, 0.89 tail of breeding density/m2。
Third day starts to feed after parent population enters pond, and feed is expanded pellet feed, day flow vector be parent population total weight 3~
5%, every morning 9:00,17:00 in afternoon are respectively fed once.Moment observes water colour and the movement pattern of fish, when the transparency of water is less than 25cm,
The water of 1/3 volume in pond is changed, summer is primary according to the every moisturizing in two days of water level conditions, and rainstorm weather then drains in time, protects
Water holding position and water quality.
2) oviposition situation inspection and fertilization ovum collecting
After male female parent population is put into spawning pond, since the 7th day, the oviposition situation of parent population is checked within every 2 days.It was opened from the 15th day
It originates existing 1 piece of casserole and is attached with fish-egg, be changed to check oviposition situation daily after having fish-egg.
The egg apparatus tool (flat bowl) that collection is attached with fish-egg is placed in another water container, keeps excessively all fish-eggs of water logging,
Under the premise of avoiding direct sunlight, water container and egg apparatus tool are moved to greenhouse rapidly, hatching cylinder is then added water into the depth of water
30cm opens oxygen pump, adjusts the gas output of gas stone and biochemical cotton filter to medium relatively low level.The Spawning water of stand-by storage
Be blended into the bucket for being filled with fish-egg, balance and adapt to water temperature and quality, then with 10mg/L liquor potassic permanganate impregnate fish-egg (together with
Egg apparatus tool) one minute, then egg apparatus had and moves into hatching cylinder and hatches.
3) hatching of fertilized eggs
Fertilized eggs move into hatching cylinder after, open oxygen-increasing device, with shade covering shut out the light, make illumination illumination≤
20lx, after 48 hours, observation hatching situation such as there is no fry membrane, check within every 24 hours later once, until fry membrane.
It was found that when water temperature reaches 27 DEG C, 72 hours fries membrane；When water temperature reaches 28 DEG C, 48 hours most fries
Membrane.After fry membrane 36 hours, 80% or more horizontal can swim, and take attached ovum casserole away and remove light screening material.
4) fry rearing
Morning next day starts to feed fry.First half of the year zooplankter season abundant (3~June), with 240 mesh zooplankters
Net fishes for zooplankter from rich water pond, is then filtered with 150 mesh filter screens, and with the zooplankter under strainer, (main component is wheel
Worm) fry is fed, the second half year uses the homogenate of cooked egg Huang as starter diet, feeds 6 times daily within first week, second week is used instead small-sized
Cladocera (zooplankter between 80 mesh and 150 mesh filter screens) is fed, and is fed daily 4 times, until fry grows to overall length
2cm, into next breeding phase.
5) after being collected into the first nest fish-egg, check within every 2 days whether an egg apparatus tool has fish-egg, if egg apparatus tool is attached with
I.e. repeatable the step 2)~step 4) of fish-egg.
Actual effect: entire mating period is collected into 336 nest of fish-egg (each egg apparatus tool is every time clutch of eggs), ovum grain altogether
Quantity about 200,000, average every accumulative oviposition about 4400 of tail raun year hatches about 180,000 tail of fry, hatching rate about 90%,
Harvest 2cm fry is total to about 160,000 tails, average every accumulative breeding 3500 tail of fry of tail raun year.
Embodiment 3
Implement place: in Nanhai District Foshan City water fish pool base
Implement the time: in April, 2014~October.
The preparation of utensil:
Spawning pond: rectangle mire, area 90m2, 1.0~1.1m of the depth of water, mud average thickness 11cm；PH7.0,4 below the moon
25 DEG C of lower layer's water temperature in ten days water body.
Egg apparatus tool: select diameter 20cm without foot ceramic bowl (or jardiniere, crock), ceramic bowl side ties up one
Cord, the cord other end extend to pool side, while by ceramic bowl buckle in four sides of bottom of pond quadrangle and pond, ceramic bowl is about from pool side
80cm, 1.1~1.3m of spacing of adjacent two ceramics bowl put into 33, ceramic bowl altogether.
Hatch cylinder: hatching cylinder bottom area >=0.2m2, water-storage depth 0.4m, no periods of direct sunlight is (plank, black with overcover
Cloth or black plastic film etc.) 90% or more illumination of masking, 28~30 DEG C of water temperature, and differ with spawning pond lower layer water temperature no more than 2
DEG C, it is equipped with oxygen-increasing device, makes oxyty >=5mg/L.
The present embodiment prepares 24 hatching cylinders, and specification is (length) 120cm × (width) 50cm × (height) 50cm, uses permanganic acid
It being eluted with water after potassium solution disinfection, each cylinder is equipped with an airstone, and a pneumatic biochemical cotton filter connects oxygen increasing pump,
It wouldn't open, it wouldn't water storage.Reservoir lays in tap water 5m simultaneously3, oxygen increasing pump aeration is opened, it is spare.
1) it selects parent population and is put into spawning pond
After overwintering, from 11~23 monthly age parent populations that outdoor tank has cultivated 15 days, select the long 12cm of body~
16cm, health and strong, form and 45 tail of male parent population that development is normal, head is obviously swelled；Select body it is long by 10~
15cm, health, form and development is normal, abdomen is full 63 tail of female parent population, the property ratio of parent population is 1:1.4, after choosing
It is directly placed into spawning pond, 1.2 tails of breeding density/m2。
Third day starts to feed after parent population enters pond, and feed is expanded pellet feed, day flow vector be parent population total weight 3~
5%, every morning 9:00,17:00 in afternoon are respectively fed once.Moment observes water colour and the movement pattern of fish, when the transparency of water is less than 25cm,
The water of 1/3 volume in pond is changed, summer is primary according to the every moisturizing in two days of water level conditions, and rainstorm weather then drains in time, protects
Water holding position and water quality.
2) oviposition situation inspection and fertilization ovum collecting
After male female parent population is put into spawning pond, since the 7th day, the oviposition situation of parent population is checked within every 2 days.It was opened from the 15th day
It originates existing 1 piece of casserole and is attached with fish-egg, be changed to check oviposition situation daily after having fish-egg.
The egg apparatus tool (ceramic pot, bowl, basin etc.) that collection is attached with fish-egg is placed in another water container, and fish-egg upward, is protected
The dipped all fish-eggs of water holding move water container and egg apparatus tool to greenhouse rapidly under the premise of avoiding direct sunlight, then will
Hatching cylinder adds water to depth of water 40cm, opens oxygen pump, adjusts the gas output of gas stone and biochemical cotton filter to medium relatively low level.
The Spawning water of stand-by storage is blended into the bucket for being filled with fish-egg, then balance and adaptation water temperature and quality use 15mg/L potassium permanganate
Solution impregnates fish-egg (having together with egg apparatus) one minute, then egg apparatus is had immigration hatching cylinder and is hatched.
3) hatching of fertilized eggs
Fertilized eggs move into hatching cylinder after, open oxygen-increasing device, with shade covering shut out the light, make illumination illumination≤
20lx, after 48 hours, observation hatching situation such as there is no fry membrane, check within every 24 hours later once, until fry membrane.
It was found that when water temperature reaches 27 DEG C, 72 hours fries membrane；When water temperature reaches 28 DEG C, 48 hours most fries
Membrane.After fry membrane 36 hours, 80% or more horizontal can swim, and take attached ovum casserole away and remove light screening material.
4) fry rearing
Morning next day starts to feed fry.First half of the year zooplankter season abundant (3~June), with 240 mesh zooplankters
Net fishes for zooplankter from rich water pond, is then filtered with 150 mesh filter screens, and with the zooplankter under strainer, (main component is wheel
Worm) fry is fed, the second half year (7~October) use the homogenate of cooked egg Huang as starter diet, and first week daily to feed 6 times, and second
The small-sized cladocera of Zhou Gaiyong (zooplankter between 80 mesh and 150 mesh filter screens) is fed, and is fed daily 4 times, until fry at
Overall length 2cm is grown to, into next breeding phase.
5) after being collected into the first nest fish-egg, check within every 2 days whether an egg apparatus tool has fish-egg, if egg apparatus tool is attached with
I.e. repeatable the step 2)~step 4) of fish-egg.
Actual effect: entire mating period is collected into 476 nest of fish-egg (each egg apparatus tool is every time clutch of eggs), ovum grain altogether
Quantity about 290,000, average every accumulative oviposition about 4603 of tail raun year hatches 25.7 ten thousand tail of fry, hatching rate is about
86.2%, totally 23.5 ten thousand tail, average every tail raun year add up breeding 3730 tail of fry to harvest 2cm fry.
Reference examples 1:
Implement the time: in April, 2011~October
Embodiment: ox head porgy breeds in cement pit collective
Experiment condition: area 30m2, depth of water 0.8m puts 60 tail of ox head porgy parent population (30 pairs) in a suitable place to breed, and parent population April 20 entered pond, and 5
The beginning of the month, seine in every 20 days are collected fry 1 time；
Actual effect: April to acquiring fry 9 times altogether by the end of October, is collected into 35 nest of fry being contained in female lymphogranuloma inguinale, amounts to
About 12000 tails, average every tail raun obtain 400 tail of fry.
In conclusion the habit that the present invention is laid eggs using the fish on water-bed hard object surface, is compeled by the mud of pond bottom
Make parent population in the hard exterior surface oviposition manually provided, which is higher by support zone therefore is not easy to be floated by mud
Mud is covered；The present invention reduces the interference to oviposition parent population to the maximum extent, thus spawning rate is higher than reference examples, and it is suitable to provide
Incubation condition, and be completely disposed at hatching process under artificial monitoring, therefore it is also higher than reference examples to hatch survival rate, hatching damage
The fry of mistake is few, and fry yield is big, and the average every tail parent population of experimental group produces 7.5 times that seedling amount is control group.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of method of ox head porgy batch breeding, which comprises the following steps:
1) it is 1:1.1~1.5 according to property ratio by the ox head porgy male at 11~23 monthly ages, female parent population, launches to there is female parent population
Whether the spawning pond of the several egg apparatus tools of 50%~80% of quantity, being observed in egg apparatus tool after 7~11 days has fish-egg；The production
Back-off has egg apparatus tool in ovum pond, and the distance of adjacent utensil of hatching is 1~2m；
If 2) egg apparatus tool be attached with fish-egg, with 10~15mg/L liquor potassic permanganate by egg apparatus have and utensil in fish-egg
Impregnate 1~2 minute, then by egg apparatus tool and fish-egg be transferred to surface be covered with shade hatching cylinder and logical oxygen, and having
The original position of the egg apparatus tool of fish-egg, which is mended, puts a new egg apparatus tool；
3) observation hatching cylinder fry whether membrane, carry out incubation period nursing；
If 4) feed feed within 24~26 hours after the swimming of fry level after membrane, until a length of 2~3cm of fish, under can entering
One nurturing period；
5) after being collected into the first nest fish-egg, check within every 2~3 days whether an egg apparatus tool has fish-egg, if egg apparatus tool is attached with
I.e. repeatable the step 2)~step 4) of fish-egg.
2. the method according to claim 1, wherein egg apparatus described in step 1) tool be flat ceramic casserole,
No foot pottery bowl, crock, jardiniere.
3. the method according to claim 1, wherein the step 1) male parent population be head obviously swell, body
The male parent population of long 12cm~16cm；Female parent population is that abdomen is full, the female parent population of the long 10cm~15cm of body.
4. the method according to claim 1, wherein spawning pond described in step 1) is the soil that bottom of pond has mud
The pond Chi Geng.
5. the method according to claim 1, wherein the water body pH of spawning pond described in step 1) be 6.5~
7.5, lower layer's water temperature is 26~30 DEG C in water body.
6. the method according to claim 1, wherein male, the female parent population of ox head porgy described in step 1) is launched
Density to spawning pond is 0.5~1.5 tail/m2。
7. the method according to claim 1, wherein the floor space for hatching cylinder described in step 2) is more than or equal to
0.2m2, the depth of water is 0.2~0.4m.
8. being blocked the method according to claim 1, wherein the incubation period described in step 3) leads to oxygen with shade
90%~100% light makes illumination illumination no more than 20lx.
9. the method according to claim 1, wherein hatching cylinder water temperature described in step 3) be 26~30 DEG C, than
Spawning pond lower layer water temperature height be no more than 2 DEG C or it is low be no more than 2 DEG C, hatching cylinder oxyty is more than or equal to 5mg/L.
10. the method according to claim 1, wherein described in step 4) feed first week for living body wheel animalcule or
The homogenate of cooked egg Huang, second week are small-sized cladocera.
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