CN105850873A - Method for breeding muscovy ducks - Google Patents
Method for breeding muscovy ducks Download PDFInfo
- Publication number
- CN105850873A CN105850873A CN201610216605.3A CN201610216605A CN105850873A CN 105850873 A CN105850873 A CN 105850873A CN 201610216605 A CN201610216605 A CN 201610216605A CN 105850873 A CN105850873 A CN 105850873A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 241000272834 Cairina moschata Species 0.000 title abstract description 4
- 238000009395 breeding Methods 0.000 title abstract 9
- 230000001488 breeding effect Effects 0.000 title abstract 9
- 235000013601 eggs Nutrition 0.000 claims abstract description 200
- 230000012447 hatching Effects 0.000 claims abstract description 58
- 238000004659 sterilization and disinfection Methods 0.000 claims description 28
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 18
- 210000001161 mammalian embryo Anatomy 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 241000272525 Anas platyrhynchos Species 0.000 claims description 14
- 102000002322 Egg Proteins Human genes 0.000 claims description 9
- 108010000912 Egg Proteins Proteins 0.000 claims description 9
- 210000004204 blood vessel Anatomy 0.000 claims description 9
- 210000003278 egg shell Anatomy 0.000 claims description 9
- 210000000744 eyelid Anatomy 0.000 claims description 9
- 239000012286 potassium permanganate Substances 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 8
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 239000008280 blood Substances 0.000 claims description 6
- 210000004369 blood Anatomy 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 6
- 206010023126 Jaundice Diseases 0.000 claims description 3
- 230000013020 embryo development Effects 0.000 claims description 3
- 238000003958 fumigation Methods 0.000 claims description 3
- 208000004141 microcephaly Diseases 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000035807 sensation Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002352 surface water Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract 3
- 230000000249 desinfective effect Effects 0.000 abstract 1
- 238000009313 farming Methods 0.000 abstract 1
- 210000004185 liver Anatomy 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000286209 Phasianidae Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000027272 reproductive process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New breeds of animals
- A01K67/02—Breeding vertebrates
Abstract
The invention provides a method for breeding muscovy ducks. The method includes steps of disinfecting breeding eggs; arranging the breeding eggs; hatching the breeding eggs and the like. The method particularly includes that the eggs are cooled once every three days when hatched on the 11th-31st days, egg vehicles are repositioned after the eggs are completely cooled, and the eggs continue to be hatched; egg cooling operation is carried out in wet-cooling or dry-cooling modes, the breeding eggs are primarily illuminated on the tenth days, and the breeding eggs without hatching value are removed; the breeding eggs are secondarily illuminated on the 17th days; tray turning operation is carried out after the 31st-32nd days; ducklings are primarily picked once on the 34th and 35th days and are primarily captured when the duckling rate reaches 10%; ducklings are secondarily picked when the duckling rate reaches 70% at least. The method for breeding the muscovy ducks has the advantages of high duckling rate and adaptability to requirements of large-scale industrial farming.
Description
Technical field
The present invention relates to poultry companies cultural method, be specifically related to a kind of kind duck mating system.
Background technology
Kind duck formal name used at school Cairna moschata, has another name called fragrant quail wild goose, muscovy duck, belongs to together the most of the same race with general family duck.During kind duck originates in, South America torrid areas.Kind duck is up-and-coming meat, liver one of fowl kind.It has that build is big, growth rapidly, the advantage such as crude feed tolerance, easily fattening, delicious meat, liver prouduction be good.
Kind duck is in China's existing centuries cultivation history, and duckling seedling relies primarily on kind of duck and naturally hatches and breed, still shortage plant layout newly-hatched duckling mating system.
Summary of the invention
The technical problem to be solved is to provide a kind of kind duck mating system, and its emergence rate is high, is suitable for the needs of large-scale industrialized cultivation.
For reaching above-mentioned purpose, kind duck mating system of the present invention, comprise the following steps:
Step 1, kind egg sterilization:
Kind of egg is uniformly positioned in egg rack, pushes disinfection room；Potassium permanganate, water, formalin are sequentially added in the container in disinfection room, make disinfection room airtight immediately, after fumigation 25 ± 5 minutes, disinfection room is aerated ventilation；
Described potassium permanganate, water, the usage amount of formalin determine according to disinfection room volume: every cubic metre uses potassium permanganate 15g, water 30ml, formalin 30ml；
Step 2, pendulum egg
Being chosen by qualified kind of egg, and be placed on egg car, each egg car uses same pendulum egg mode, and described pendulum egg mode includes keeping flat and placing two ways vertically, keeps flat: i.e. use major part or microcephaly's same level direction to put；Little catotropic mode is i.e. used to put；The egg car set is pushed and deposits egg room；
Step 3, kind egg enter to incubate
Kind of egg enters to incubate and completes in hatching workshop, is provided with at pre-temperature, disinfection room, hatch machine in described hatching workshop, and in described hatching workshop, temperature controls at 20 DEG C 34 DEG C；
Step 3.1, enter to incubate before rise again and sterilize
If depositing egg room with the temperature difference in hatching workshop less than 5 DEG C, the most directly pushing disinfection room and sterilizing 25 minutes；If the temperature difference is more than 5 DEG C, need to be pulled at pre-temperature rise again 4 ± 0.5 hours from depositing egg storehouse by kind of egg, and after all kinds of egg surface water drops are the dryest and the comfortableest, push disinfection room and sterilize 25 minutes；
Step 3.2, enter to incubate front preparation: hatch machine is carried out, sterilizes and maintains；
Step 3.3, entering to incubate pre-temperature: to entering to incubate the time, draw in hatch machine by the egg car being placed with kind of egg, at least 2 frame egg car in every hatch machine, door stays seam, opens fan and heater switch, and pre-temperature 1-3 hour closes gate after reaching design temperature；
Described enter to incubate the time, summer and autumn: afternoon 15:00；Winter-spring season: morning 8:30 10:00；
Step 4, cool egg
When hatching enters 11-31 days ages, within every 3 days, carry out the coolest egg, exchange egg truck position after cool egg and continue hatching；Described cool egg operation takes one of in the following manner to carry out:
Cool egg mode A: wet cool, releases hatch machine by egg car, dries after egg car being carried out even spraying with 33 40 DEG C of water, treats that kind of egg surface dry go-cart can enter hatch machine, intensification of closing the door, continues hatching；
Cool egg mode B: do cool, uses jetting machine water to be squirted on ground, the hatching Room, creates cool egg environment, will carry out the outer Temperature fall of machine 120 ± 30 minutes outside egg car release hatch machine, and then hatch machine start continuation hatching is entered in go-cart；
While carrying out cool egg operation, addled egg, broken egg are rejected；
Step 5, photograph egg
Described refer to take out the kind egg hatched according to egg and irradiation is checked, have hatching be worth kind of an egg refer to live embryo egg blood vessel substantially, clear, the division is clearly demarcated for imposing manner, it is seen that embryo motion；It is worth kind of an egg without hatching to include: light egg is well-illuminated, avascular kind of egg, the most unfertilized kind of egg；Dead germ has blood point, blood line or black patch, and air chamber boundary line is inconspicuous, the kind egg that blood vessel is fuzzy；Weak embryo embryonic development is the slowest, blood vessel is tiny, air chamber substantially exception etc. plants egg；
Step 5.1, hatching carry out shining first on and reject the kind egg being worth without hatching 10 day age；
Step 5.2, hatching carry out two and shine and reject the kind egg being worth without hatching 17 day ages, kind egg and the kind egg of low-temperature space of high-temperature region in hatch machine are exchanged according to while egg；
Step 6, rotating disk
Carrying out rotating disk operation after hatching 31-32 days ages, described rotating disk refers to the normal egg of planting in hatch machine is transferred to young-generating machine；Described young-generating machine includes frame, and frame is provided with the egg sieve of band mesh；
Step 6.1, machine are debugged: confirm before rotating disk that young-generating machine properties normally can use；Must assure that before rotating disk that young-generating machine egg sieve is dry and comfortable without the globule；
Step 6.2, rotating disk operate: pull out 2 car eggs in hatch machine simultaneously, carry out rotating disk operation by car；
Step 7, hatching
34,35 day age is once picked up seedling in step 7.1, hatching, catches seedling first when emergence rate reaches 10%；
Step 7.2, emergence rate reach 70% secondary carried out above and pick up seedling；Process eggshell；Young seedling for unable broken shell voluntarily carries out artificial aiding-birth, and embryo egg residue not being gone out to shell carries out assorted cold dishes；
Described artificial aiding-birth refers to: take eggshell, addled egg and unworthy inferior seedling away, becomes dry to pecking eggshell jaundice around mouth, and the young seedling of unable broken shell voluntarily carries out artificial aiding-birth, is peeled off gently by the embryo egg split；
Described assorted cold dishes refer to residue the embryo egg combination of shell, put into other hatch machine having vacant position, and carry out label continuation hatching.
In described step 4 cool egg operation process, use eyelid temp measuring method to judge that go-cart is entered the opportunity of machine: operating personnel by near for egg Surface Mount eyelid, eyelid sensation egg table slightly warm the coolest time, go-cart is entered hatch machine, intensifications of closing the door, is continued to hatch.
The advantage of technique scheme is embodied in: can accurately control hatching workshop, the humiture index of hatch machine in A, reproductive process, it is provided that stablize and suitably breed environment, improve chickling-surviving rate；B, breed before kind of egg is carried out twice sterilization, prevent bacterium, virus infect；C, cool egg operation simulation father and mother plant kind duck Chick raising behavior in generation, and the position carrying out kind of egg is moved, it is ensured that it is heated evenly, and improves chickling-surviving rate further.
Detailed description of the invention
Kind duck mating system of the present embodiment, comprises the following steps:
Step 1, kind egg sterilization:
Kind of egg is uniformly positioned in egg rack, pushes disinfection room；Potassium permanganate, water, formalin are sequentially added in the container in disinfection room, make disinfection room airtight immediately, after fumigation 25 ± 5 minutes, disinfection room is aerated ventilation；
Described potassium permanganate, water, the usage amount of formalin determine according to disinfection room volume: every cubic metre uses potassium permanganate 15g, water 30ml, formalin 30ml.
Step 2, pendulum egg
Being chosen by qualified kind of egg, and be placed on egg car, each egg car uses same pendulum egg mode, and described pendulum egg mode includes keeping flat and placing two ways vertically, keeps flat: i.e. use major part or microcephaly's same level direction to put；Little catotropic mode is i.e. used to put；The egg car set is pushed and deposits egg room.
Step 3, kind egg enter to incubate
Kind of egg enters to incubate and completes in hatching workshop, is provided with at pre-temperature, disinfection room, hatch machine in described hatching workshop, and in described hatching workshop, temperature controls at 20 DEG C 34 DEG C.
Described hatching built-in temperature controls at 35 ~ 45 DEG C, and is automatically controlled by PLC device.
Step 3.1, enter to incubate before rise again and sterilize
If depositing egg room with the temperature difference in hatching workshop less than 5 DEG C, the most directly pushing disinfection room and sterilizing 25 minutes；If the temperature difference is more than 5 DEG C, need to be pulled at pre-temperature rise again 4 ± 0.5 hours from depositing egg storehouse by kind of egg, and after all kinds of egg surface water drops are the dryest and the comfortableest, push disinfection room and sterilize 25 minutes；
Step 3.2, enter to incubate front preparation: hatch machine is carried out, sterilizes and maintains；
Step 3.3, entering to incubate pre-temperature: to entering to incubate the time, draw in hatch machine by the egg car being placed with kind of egg, at least 2 frame egg car in every hatch machine, door stays seam, opens fan and heater switch, and pre-temperature 1-3 hour closes gate after reaching design temperature；
Described enter to incubate the time, summer and autumn: afternoon 15:00；Winter-spring season: morning 8:30 10:00.
Step 4, cool egg
When hatching enters 11-31 days ages, within every 3 days, carry out the coolest egg, exchange egg truck position after cool egg and continue hatching；Described cool egg operation takes one of in the following manner to carry out:
Cool egg mode A: wet cool, releases hatch machine by egg car, dries after egg car being carried out even spraying with 33 40 DEG C of water, treats that kind of egg surface dry go-cart can enter hatch machine, intensification of closing the door, continues hatching；
Cool egg mode B: do cool, uses jetting machine water to be squirted on ground, the hatching Room, creates cool egg environment, will carry out the outer Temperature fall of machine 120 ± 30 minutes outside egg car release hatch machine, and then hatch machine start continuation hatching is entered in go-cart；
While carrying out cool egg operation, addled egg, broken egg are rejected.
Step 5, photograph egg
Described refer to take out the kind egg hatched according to egg and irradiation is checked, have hatching be worth kind of an egg refer to live embryo egg blood vessel substantially, clear, the division is clearly demarcated for imposing manner, it is seen that embryo motion；It is worth kind of an egg without hatching to include: light egg is well-illuminated, avascular kind of egg, the most unfertilized kind of egg；Dead germ has blood point, blood line or black patch, and air chamber boundary line is inconspicuous, the kind egg that blood vessel is fuzzy；Weak embryo embryonic development is the slowest, blood vessel is tiny, air chamber substantially exception etc. plants egg.
Step 5.1,10 day age carry out shining first on and reject the kind egg being worth without hatching；
Step 5.2,17 day age carry out two and shine and reject the kind egg being worth without hatching, are exchanged by the kind egg planting egg and low-temperature space of high-temperature region in hatch machine according to while egg.
Step 6, rotating disk
Carrying out rotating disk operation after 31-32 days ages, described rotating disk refers to the normal egg of planting in hatch machine is transferred to young-generating machine；Described young-generating machine includes frame, and frame is provided with the egg sieve of band mesh；
6.1, machine debugging: confirm before rotating disk that young-generating machine properties normally can use；Must assure that before rotating disk that young-generating machine egg sieve is dry and comfortable without the globule；
6.2, rotating disk operation: pull out 2 car eggs in hatch machine simultaneously, carry out rotating disk operation by car.
Step 7, hatching
Step 7.1,34,35 day age once pick up seedling, catch seedling first when emergence rate reaches 10%；
Step 7.2, emergence rate reach 70% secondary carried out above and pick up seedling；Process eggshell；Young seedling for unable broken shell voluntarily carries out artificial aiding-birth, and embryo egg residue not being gone out to shell carries out assorted cold dishes；
Described artificial aiding-birth refers to: take eggshell, addled egg and unworthy inferior seedling away, becomes dry to pecking eggshell jaundice around mouth, and the young seedling of unable broken shell voluntarily carries out artificial aiding-birth, is peeled off gently by the embryo egg split；
Described assorted cold dishes refer to residue the embryo egg combination of shell, put into other hatch machine having vacant position, and carry out label continuation hatching.
In described step 4 cool egg operation process, use eyelid temp measuring method to judge that go-cart is entered the opportunity of machine: operating personnel by near for egg Surface Mount eyelid, eyelid sensation egg table slightly warm the coolest time, go-cart is entered hatch machine, intensifications of closing the door, is continued to hatch.
The detailed description of the invention of the present invention is including, but not limited to above-described embodiment; in the case of without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and deformation according to the present invention, but still falls into protection scope of the present invention.
Claims (2)
1. a kind duck mating system, comprises the following steps:
Step 1, kind egg sterilization:
Kind of egg is uniformly positioned in egg rack, pushes disinfection room；Potassium permanganate, water, formalin are sequentially added in the container in disinfection room, make disinfection room airtight immediately, after fumigation 25 ± 5 minutes, disinfection room is aerated ventilation；
Described potassium permanganate, water, the usage amount of formalin determine according to disinfection room volume: every cubic metre uses potassium permanganate 15g, water 30ml, formalin 30ml；
Step 2, pendulum egg
Being chosen by qualified kind of egg, and be placed on egg car, each egg car uses same pendulum egg mode, and described pendulum egg mode includes keeping flat and placing two ways vertically, keeps flat: i.e. use major part or microcephaly's same level direction to put；Little catotropic mode is i.e. used to put；The egg car set is pushed and deposits egg room；
Step 3, kind egg enter to incubate
Kind of egg enters to incubate and completes in hatching workshop, is provided with at pre-temperature, disinfection room, hatch machine in described hatching workshop, and in described hatching workshop, temperature controls at 20 DEG C 34 DEG C；
Step 3.1, enter to incubate before rise again and sterilize
If depositing egg room with the temperature difference in hatching workshop less than 5 DEG C, the most directly pushing disinfection room and sterilizing 25 minutes；If the temperature difference is more than 5 DEG C, need to be pulled at pre-temperature rise again 4 ± 0.5 hours from depositing egg storehouse by kind of egg, and after all kinds of egg surface water drops are the dryest and the comfortableest, push disinfection room and sterilize 25 minutes；
Step 3.2, enter to incubate front preparation: hatch machine is carried out, sterilizes and maintains；
Step 3.3, entering to incubate pre-temperature: to entering to incubate the time, draw in hatch machine by the egg car being placed with kind of egg, at least 2 frame egg car in every hatch machine, door stays seam, opens fan and heater switch, and pre-temperature 1-3 hour closes gate after reaching design temperature；
Described enter to incubate the time, summer and autumn: afternoon 15:00；Winter-spring season: morning 8:30 10:00；
Step 4, cool egg
When hatching enters 11-31 days ages, within every 3 days, carry out the coolest egg, exchange egg truck position after cool egg and continue hatching；Described cool egg operation takes one of in the following manner to carry out:
Cool egg mode A: wet cool, releases hatch machine by egg car, dries after egg car being carried out even spraying with 33 40 DEG C of water, treats that kind of egg surface dry go-cart can enter hatch machine, intensification of closing the door, continues hatching；
Cool egg mode B: do cool, uses jetting machine water to be squirted on ground, the hatching Room, creates cool egg environment, will carry out the outer Temperature fall of machine 120 ± 30 minutes outside egg car release hatch machine, and then hatch machine start continuation hatching is entered in go-cart；
While carrying out cool egg operation, addled egg, broken egg are rejected；
Step 5, photograph egg
Described refer to take out the kind egg hatched according to egg and irradiation is checked, have hatching be worth kind of an egg refer to live embryo egg blood vessel substantially, clear, the division is clearly demarcated for imposing manner, it is seen that embryo motion；It is worth kind of an egg without hatching to include: light egg is well-illuminated, avascular kind of egg, the most unfertilized kind of egg；Dead germ has blood point, blood line or black patch, and air chamber boundary line is inconspicuous, the kind egg that blood vessel is fuzzy；Weak embryo embryonic development is the slowest, blood vessel is tiny, air chamber substantially exception etc. plants egg；
Step 5.1, hatching carry out shining first on and reject the kind egg being worth without hatching 10 day age；
Step 5.2, hatching carry out two and shine and reject the kind egg being worth without hatching 17 day ages, kind egg and the kind egg of low-temperature space of high-temperature region in hatch machine are exchanged according to while egg；
Step 6, rotating disk
Carrying out rotating disk operation after hatching 31-32 days ages, described rotating disk refers to the normal egg of planting in hatch machine is transferred to young-generating machine；Described young-generating machine includes frame, and frame is provided with the egg sieve of band mesh；
Step 6.1, machine are debugged: confirm before rotating disk that young-generating machine properties normally can use；Must assure that before rotating disk that young-generating machine egg sieve is dry and comfortable without the globule；
Step 6.2, rotating disk operate: pull out 2 car eggs in hatch machine simultaneously, carry out rotating disk operation by car；
Step 7, hatching
34,35 day age is once picked up seedling in step 7.1, hatching, catches seedling first when emergence rate reaches 10%；
Step 7.2, emergence rate reach 70% secondary carried out above and pick up seedling；Process eggshell；Young seedling for unable broken shell voluntarily carries out artificial aiding-birth, and embryo egg residue not being gone out to shell carries out assorted cold dishes；
Described artificial aiding-birth refers to: take eggshell, addled egg and unworthy inferior seedling away, becomes dry to pecking eggshell jaundice around mouth, and the young seedling of unable broken shell voluntarily carries out artificial aiding-birth, is peeled off gently by the embryo egg split；
Described assorted cold dishes refer to residue the embryo egg combination of shell, put into other hatch machine having vacant position, and carry out label continuation hatching.
The most as claimed in claim a kind of duck mating system, it is characterized in that: in described step 4 cool egg operation process, eyelid temp measuring method is used to judge that go-cart is entered the opportunity of machine: operating personnel are by near for egg Surface Mount eyelid, eyelid sensation egg table slightly warm the coolest time, hatch machine, intensification of closing the door are entered in go-cart, continue hatching.
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|---|---|---|---|
| CN201610216605.3A CN105850873B (en) | 2016-04-11 | 2016-04-11 | Kind duck mating system |
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| CN201610216605.3A CN105850873B (en) | 2016-04-11 | 2016-04-11 | Kind duck mating system |
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| CN105850873A true CN105850873A (en) | 2016-08-17 |
| CN105850873B CN105850873B (en) | 2018-08-21 |
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| CN107372359A (en) * | 2017-09-25 | 2017-11-24 | 镇宁自治县众佳农产品开发有限责任公司 | A kind of artificial fecundation method of fiery duck |
| CN107494420A (en) * | 2017-09-07 | 2017-12-22 | 浙江尼松食品有限公司 | A kind of method of wild duck hatching of breeding eggs |
| CN107549104A (en) * | 2017-09-26 | 2018-01-09 | 安庆市立华牧业有限公司 | Black-bone chicken baby chick batch hatching method |
| CN109006661A (en) * | 2018-06-28 | 2018-12-18 | 芜湖忠武家禽养殖有限公司 | A kind of hatching method of duck's egg |
| CN109526869A (en) * | 2018-12-28 | 2019-03-29 | 安庆永强农业科技股份有限公司 | Kind duck hatching method suitable for industrial aquaculture |
| CN109673584A (en) * | 2018-12-24 | 2019-04-26 | 内蒙古塞飞亚农业科技发展股份有限公司 | A method of hatching rate is extended shelf life and improved suitable for northern birds hatching egg |
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| CN109006661A (en) * | 2018-06-28 | 2018-12-18 | 芜湖忠武家禽养殖有限公司 | A kind of hatching method of duck's egg |
| CN109673584A (en) * | 2018-12-24 | 2019-04-26 | 内蒙古塞飞亚农业科技发展股份有限公司 | A method of hatching rate is extended shelf life and improved suitable for northern birds hatching egg |
| CN109526869A (en) * | 2018-12-28 | 2019-03-29 | 安庆永强农业科技股份有限公司 | Kind duck hatching method suitable for industrial aquaculture |
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Denomination of invention: Breeding methods of Muscovy Duck Effective date of registration: 20210301 Granted publication date: 20180821 Pledgee: Anqing Yonghua Financing Guarantee Co.,Ltd. Pledgor: ANQING YONGQIANG AGRICULTURAL SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2021980001359 |
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Application publication date: 20160817 Assignee: ANHUI HUANGSHI PANYA FOOD Co.,Ltd. Assignor: ANQING YONGQIANG AGRICULTURAL SCIENCE AND TECHNOLOGY CO.,LTD. Contract record no.: X2023980042678 Denomination of invention: Breeding methods of muscovy ducks Granted publication date: 20180821 License type: Common License Record date: 20231008 |