CN109077013A - A kind of improvement propagation method of beef cattle - Google Patents
A kind of improvement propagation method of beef cattle Download PDFInfo
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- CN109077013A CN109077013A CN201710441815.7A CN201710441815A CN109077013A CN 109077013 A CN109077013 A CN 109077013A CN 201710441815 A CN201710441815 A CN 201710441815A CN 109077013 A CN109077013 A CN 109077013A
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- 235000015278 beef Nutrition 0.000 title claims abstract description 37
- 241000283690 Bos taurus Species 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000006872 improvement Effects 0.000 title claims abstract description 11
- 238000009395 breeding Methods 0.000 claims abstract description 36
- 230000001488 breeding effect Effects 0.000 claims abstract description 35
- 244000309466 calf Species 0.000 claims abstract description 29
- 230000008774 maternal effect Effects 0.000 claims abstract description 25
- 210000003097 mucus Anatomy 0.000 claims abstract description 16
- 238000009396 hybridization Methods 0.000 claims abstract description 11
- 230000035935 pregnancy Effects 0.000 claims abstract description 3
- 238000009304 pastoral farming Methods 0.000 claims description 11
- 244000144980 herd Species 0.000 claims description 8
- 230000035946 sexual desire Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 235000013305 food Nutrition 0.000 claims description 7
- 230000012173 estrus Effects 0.000 claims description 6
- 201000010099 disease Diseases 0.000 claims description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 4
- 241000282887 Suidae Species 0.000 claims description 4
- 240000008042 Zea mays Species 0.000 claims description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 4
- 235000005822 corn Nutrition 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 230000005012 migration Effects 0.000 claims description 4
- 238000013508 migration Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 235000015099 wheat brans Nutrition 0.000 claims description 4
- 241000015177 Saccharina japonica Species 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 244000269722 Thea sinensis Species 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 210000001215 vagina Anatomy 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 244000309464 bull Species 0.000 abstract description 11
- 230000013011 mating Effects 0.000 abstract description 9
- 230000004083 survival effect Effects 0.000 abstract description 7
- 239000000796 flavoring agent Substances 0.000 abstract description 2
- 235000019634 flavors Nutrition 0.000 abstract description 2
- 230000000474 nursing effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 241000283725 Bos Species 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 235000015277 pork Nutrition 0.000 description 2
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 208000006374 Uterine Cervicitis Diseases 0.000 description 1
- 206010046914 Vaginal infection Diseases 0.000 description 1
- 201000008100 Vaginitis Diseases 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 206010008323 cervicitis Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 208000026435 phlegm Diseases 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 208000017443 reproductive system disease Diseases 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 230000035922 thirst Effects 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New or modified breeds of animals
- A01K67/02—Breeding vertebrates
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K21/00—Devices for assisting or preventing mating
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Zoology (AREA)
- Fodder In General (AREA)
Abstract
The present invention relates to a kind of improvement propagation methods of beef cattle, comprising: 1) seed selection hybridization；2) prepare before breeding；3) it breeds；4) pregnancy period raises.The present invention is hybridized using local parent with Quality beef, so that the veal after hybridization is adaptable, sick body is few, high survival rate.It can guarantee that maternal group has with male parent group using fence off nursing before breeding to exchange and contact, promote heat mating, but will not arbitrarily mate, cause calf age in days gap big, influence survival rate.The present invention also passes through the pH value adjustment of manual adjustment female parent vaginal mucus, and making the calf 85% bred, the above are bulls, it is ensured that the birth ratio of bull improves the yield and quality of beef.The method of the present invention is easy to operate, and the veal for hybridizing out is physically fit, high survival rate, and growth is rapid, delicious flavour vivid at the beef color butchered after ox.
Description
Technical field
The present invention relates to calf breeding fields, refer in particular to a kind of improvement propagation method of beef cattle.
Background technique
Beef protein rich in, amino acid ratio of components pork are needed closer to human body, can improve body disease-resistant energy
Power, to after growth and development and operation, the people of aftercare supplement blood loss and in terms of particularly suitable, Chinese people
Equal beef consumption figure is only second to pork.Severe winter eats beef, there is warm stomach effect, is severe winter nutritious good tonic.Chinese medicine thinks: beef has
Tonifying middle-Jiao and Qi, nourishes taste, strong muscles and bones, reduce phlegm and income wind, saliva of quenching the thirst the effect of.Suitable for the sinking of qi of middle-jiao, body void of breathing hard, muscle
Bone is aching and limp and the people of anaemia prolonged illness and yellow dizzy people in face is edible.Beef is always the main stream food of developed country, and beef is with day
It is raised based on right herbage, belongs to natural nuisance-free food.As people's living standard is continuously improved, improving diet knot
Structure, the requirement of beef are to rise year by year, and especially high-quality high-grade beef is in short supply, and greatly developing quality meat cattle production has very
Vast market prospect.
The breeding method of beef cattle is divided into pangamy and hand mating two ways.Pangamy method, which compares, to be suitable for
Groupuscule dispersed distribution high mountains and deep gullies cows, it is convenient and easy, but be difficult to grasp the farrowing time, easily because of jelly, press, step on and lead to calf
It is dead；Because hybridization is disorderly matched, blood lineage can not be investigated thoroughly；Because bull breeding capacity is strong and weak different, mutually wrestles and strive with cow, easily spin out and match
On the kind date, formation calf age in days gap is too big, educates the bad management of ox；Easily cause cow in estrus earlier mating, so that cows quality declines；
Male and female ox is mixed, and group herds, bull chases cow, and no limitation mating cannot feel at ease to pasture, both consume bull energy, also influence cow
Feeding；It is easy to expand and propagates reproductive disease such as vaginitis, cervicitis etc..And hand mating, it is exactly that male and female ox is divided throughout the year
Group herds, and daily morning tries feelings with market bull during breeding, cow in estrus is chosen, then mate with specified bull, try feelings.
The method can grasp kinship, Breeding date, significantly improve bull breeding head number, be conducive to cow and herd fatten, also can
The outstanding breeding oxen of abundant Selection utilization, has certain effect to the production performance for improving group.Its drawback is cannot to give full play to
The utilization rate of outstanding breeding oxen, trouble of taking a lot of work will exchange bull every 2-3.Currently, the utilization of heterosis, hybrid vigor is in beef cattle production
In be proved to be one of most efficient method, external beef cattle production is widely used mature cross combination mode, multiple cross
It is greatly applied in beef cattle production, therefore how to improve the breeding of beef cattle by the methods of hybridization, improves Hybrid
Survival rate and adaptability it is extremely urgent.
Summary of the invention
The purpose of the present invention is being improved and being innovated for disadvantage present in background technique and problem, a kind of meat is provided
The improvement propagation method of ox.
The present invention the following steps are included:
1, seed selection hybridization: selecting local beef breed maternal as hybridization, introduces Quality beef as parent sire of hybrid pigs；Before breeding
Male parent and female parent are fed using fence off, and eliminate the female parent for being not suitable for breeding by half a year, to full group progress cloth disease quarantine.
2, prepare before breeding: determining the pH value of maternal vaginal mucus before breeding, when pH value is greater than 7, what breeding was given birth to
Calf is male calf, and when pH value is less than 7, the given birth to calf that breeds is female calf；Maternal progress to pH value less than 7
Vaginal mucus pH value adjustment makes the pH value of 90% or more maternal vaginal mucus breed when being greater than 7.
3, it breeds: entering oestrus, first reinforce male parent in the activity of maternal marge and carry out people daily in addition to normal grazing
Work drives movement 10-15 minutes, is then repeatedly bred according to sexual desire degree of reflection；It first selects and suitable educate female parent and be put into male parent
The male parent being highly sexed is facilitated to breed in advance in group, then further according to the gradually reinforcement of other male parent cows sexual desire reflectors point
It criticizes and is selected into female parent, and to the female parent become pregnant and time-division group's isolation.
4, the pregnancy period raises: pregnant initial stage uses based on the raising of stable breeding concentrated feed, and every ox feeds concentrated feed 15-25kg, selection
The excellent native pasture of herbaceous stem enters work grassland and herds, and keeps 2-3 hours grazing times daily；Second trimester starts, often
It keeps 8-10 hours grazing times, adopts the careless time naturally and accounts for 75-85%, the migration time accounts for 15-22%, and stand up time accounts for 3-
5%, every ox supplements concentrated feed 2-3kg, until calf is born.
The concentrated feed is formulated by the raw material of following parts by weight in one of the embodiments: dregs of beans 500-600
Part, 250-350 parts of corn, 80-100 parts of wheat bran, 22-25 parts of radix scutellariae, 15-20 parts of Rhizoma Atractylodis Macrocephalae, 1-2 parts of salt.
Quality beef male parent of the present invention is Luxi Yellow cattle, Simmental, limousin cow or Xia Luolainiu.
The method of female parent vaginal mucus pH value adjustment of the present invention can be adjusted using vaginadouche method or food
Method.
The vaginadouche method is to rinse yin using the soda water for being configured to 3-3.5% in one of the embodiments,
Road rinses before breeding.
It is to add in maternal feed 15-20 days before breeding that the food, which adjusts method, in one of the embodiments,
Add 3% fresh tea leaf, 6% Fresh Laminaria Japonica and 1% fresh orange peel.
Advantages of the present invention and the utility model has the advantages that
The present invention is hybridized using local parent with Quality beef, so that the veal after hybridization is adaptable, sick body is few, survival rate
It is high.It can guarantee that maternal group has with male parent group using fence off nursing before breeding to exchange and contact, promote heat mating, but
It will not arbitrarily mate, cause calf age in days gap big, influence survival rate.The present invention also passes through manual adjustment female parent vaginal mucus
PH value adjustment, making the calf 85% bred, the above are bulls, it is ensured that the birth ratio of bull improves the yield and product of beef
Matter.The method of the present invention is easy to operate, and the veal for hybridizing out is physically fit, high survival rate, and growth is rapid, at what is butchered after ox
Beef color is vivid, delicious flavour.
Specific embodiment
It is of the invention for ease of understanding, several embodiments of the present invention are shown below.But the present invention can be with many not
With form realize, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes to this
The disclosure of invention is more thorough and comprehensive.
Unless otherwise defined, the skill of all technical and scientific terms and technical field of the invention used herein
The normally understood meaning of art personnel is identical.Term used in the description is intended merely to describe specifically to implement purpose, is not
It is designed to limit the invention.
Embodiment 1:
1, select Hengyang City beef cattle maternal as hybridization, introduction Simmental is parent sire of hybrid pigs.It, will in breeding the first half
Male parent and female parent are fed using fence off, are guaranteed that maternal group has with male parent group and are exchanged and contact, promote heat mating, but not
It can arbitrarily mate.The female parent for being not suitable for breeding is eliminated, the quarantine of cloth disease is carried out to full group.
2, the pH value that maternal vaginal mucus is determined before breeding, when pH value is greater than 7, the given birth to calf that breeds is male ox
Calf, when pH value is less than 7, the given birth to calf that breeds is female calf.Female parent to pH value less than 7 using vaginadouche method into
Row vaginal mucus pH value adjustment uses the soda water for being configured to 3-3.5% washing vagina before breeding.Make 90% or more female parent
The pH value of vaginal mucus is bred when being greater than 7.
3, into oestrus, first reinforce male parent and manually driven daily in addition to normal grazing in the activity of maternal marge
Movement 15 minutes, is then repeatedly bred according to sexual desire degree of reflection.Concrete operations are as follows: first selecting and suitable educate female parent and be put into father
The male parent being highly sexed is facilitated to breed in this group in advance, then further according to the gradually reinforcement of other male parent cows sexual desire reflectors
It is selected into female parent in batches, and to the female parent become pregnant and time-division group's isolation.
4, dregs of beans 5000kg, corn 2500kg, wheat bran 800kg, radix scutellariae 220kg, Rhizoma Atractylodis Macrocephalae 150kg and salt 10kg is taken to prepare essence
Feed, it is spare.
5, pregnant initial stage uses based on the raising of stable breeding concentrated feed, and every ox feeds concentrated feed 15kg；The day for selecting herbaceous stem excellent
Right grassland enters work grassland and herds, and keeps 3 hours grazing times daily.Second trimester starts, and keeps 8 hours putting daily
It herds the time, adopting the careless time naturally accounts for 85%, and the migration time accounts for 15%, and stand up time accounts for 5%, and every ox supplements concentrated feed 2kg, until
Calf birth, tolly account for the 92% of birth calf.
Embodiment 2:
1, select Hengyang City beef cattle maternal as hybridization, introduction Xia Luolainiu is parent sire of hybrid pigs.In breeding the first half, by father
This is fed with female parent using fence off, guarantees that maternal group has exchange with male parent group and contacts, promotes heat mating, but will not
Arbitrarily mating.The female parent for being not suitable for breeding is eliminated, the quarantine of cloth disease is carried out to full group.
2, the pH value that maternal vaginal mucus is determined before breeding, when pH value is greater than 7, the given birth to calf that breeds is male ox
Calf, when pH value is less than 7, the given birth to calf that breeds is female calf.Female parent to pH value less than 7 is 15-20 days before breeding
It method is adjusted using food carries out vaginal mucus pH value adjustment, i.e., the fresh tea leaf of addition 3%, 6% in maternal daily feed
Fresh Laminaria Japonica and 1% fresh orange peel, so that the pH value of 90% or more maternal vaginal mucus is bred when being greater than 7.
3, into oestrus, first reinforce male parent and manually driven daily in addition to normal grazing in the activity of maternal marge
Movement 10 minutes, is then repeatedly bred according to sexual desire degree of reflection.Concrete operations are as follows: first selecting and suitable educate female parent and be put into father
The male parent being highly sexed is facilitated to breed in this group in advance, then further according to the gradually reinforcement of other male parent cows sexual desire reflectors
It is selected into female parent in batches, and to the female parent become pregnant and time-division group's isolation.
4, dregs of beans 6000kg, corn 3500kg, wheat bran 1000kg, radix scutellariae 250kg, Rhizoma Atractylodis Macrocephalae 200kg and 20kg is taken to prepare essence
Feed, it is spare.
5, pregnant initial stage uses based on the raising of stable breeding concentrated feed, and every ox feeds concentrated feed 25kg；The day for selecting herbaceous stem excellent
Right grassland enters work grassland and herds, and keeps 2 hours grazing times daily.Second trimester starts, and keeps daily 10 hours
Grazing time, adopting the careless time naturally accounts for 75%, and the migration time accounts for 22%, and stand up time accounts for 3%, and every ox supplements concentrated feed 3kg, directly
It is born to calf, tolly accounts for the 88% of birth calf.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from design philosophy of the present invention, engineers and technicians are to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention
Art content, is all described in the claims.
Claims (6)
1. a kind of improvement propagation method of beef cattle, it is characterised in that the following steps are included:
1) seed selection hybridization: selecting local beef breed maternal as hybridization, introduces Quality beef as parent sire of hybrid pigs；Before breeding
Male parent and female parent are fed using fence off, and eliminate the female parent for being not suitable for breeding by half a year, to full group progress cloth disease quarantine；
2) prepare before breeding: determining the pH value of maternal vaginal mucus before breeding, when pH value is greater than 7, breed given birth to calf
For male calf, when pH value is less than 7, the given birth to calf that breeds is female calf；Maternal progress vagina to pH value less than 7
Mucus pH value adjustment makes the pH value of 90% or more maternal vaginal mucus breed when being greater than 7；
3) it breeds: entering oestrus, first reinforce male parent and manually driven daily in addition to normal grazing in the activity of maternal marge
Customary quick is 10-15 minutes dynamic, is then repeatedly bred according to sexual desire degree of reflection；It first selects and suitable educate female parent and be put into male parent group
The male parent being highly sexed is facilitated to breed in advance, then the gradually reinforcement further according to other male parent cows sexual desire reflectors is selected in batches
Enter female parent, and to the female parent become pregnant and time-division group's isolation；
4) pregnancy period raises: pregnant initial stage uses based on the raising of stable breeding concentrated feed, and every ox feeds concentrated feed 15-25kg, selects herbaceous stem
Excellent native pasture enters work grassland and herds, and keeps 2-3 hours grazing times daily；Second trimester starts, and protects daily
8-10 hours grazing times are held, adopting the careless time naturally accounts for 75-85%, and the migration time accounts for 15-22%, and stand up time accounts for 3-5%, often
Ox supplements concentrated feed 2-3kg, until calf is born.
2. the improvement propagation method of beef cattle according to claim 1, it is characterised in that the concentrated feed is by following weight
The raw material of part is formulated:
500-600 parts of dregs of beans, 250-350 parts of corn, 80-100 parts of wheat bran, 22-25 parts of radix scutellariae, 15-20 parts of Rhizoma Atractylodis Macrocephalae, 1-2 parts of salt.
3. the improvement propagation method of beef cattle according to claim 1, it is characterised in that the Quality beef male parent is Shandong
Western ox, Simmental, limousin cow or Xia Luolainiu.
4. the improvement propagation method of beef cattle according to claim 1, it is characterised in that the maternal vaginal mucus pH value
The method of adjusting can adjust method using vaginadouche method or food.
5. the improvement propagation method of beef cattle according to claim 4, it is characterised in that the vaginadouche method uses
It is configured to the soda water washing vagina of 3-3.5%, is rinsed before breeding.
6. the improvement propagation method of beef cattle according to claim 4, it is characterised in that it is to match that the food, which adjusts method,
15-20 days before kind, in maternal feed 3% fresh tea leaf of addition, 6% Fresh Laminaria Japonica and 1% fresh orange peel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710441815.7A CN109077013A (en) | 2017-06-13 | 2017-06-13 | A kind of improvement propagation method of beef cattle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710441815.7A CN109077013A (en) | 2017-06-13 | 2017-06-13 | A kind of improvement propagation method of beef cattle |
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| Publication Number | Publication Date |
|---|---|
| CN109077013A true CN109077013A (en) | 2018-12-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710441815.7A Pending CN109077013A (en) | 2017-06-13 | 2017-06-13 | A kind of improvement propagation method of beef cattle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114747676A (en) * | 2022-05-06 | 2022-07-15 | 山东省畜牧总站(山东省种畜禽质量测定站) | Biological process for improving beef cattle breeding efficiency and composition thereof |
Citations (5)
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|---|---|---|---|---|
| JPS5843725A (en) * | 1981-09-08 | 1983-03-14 | 黒木 常春 | Artificial sex |
| CN1494824A (en) * | 2002-02-02 | 2004-05-12 | 王桂军 | Cattle directional lemale-male breeding method solution |
| CN104255653A (en) * | 2014-09-16 | 2015-01-07 | 重庆东奇畜禽养殖有限公司 | Beef improvement technology |
| CN105638568A (en) * | 2016-03-03 | 2016-06-08 | 曲靖创亿农牧有限公司 | Beef cattle breeding method |
| CN205546849U (en) * | 2016-04-26 | 2016-09-07 | 临沂市畜牧站 | Sow breeding house |
-
2017
- 2017-06-13 CN CN201710441815.7A patent/CN109077013A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843725A (en) * | 1981-09-08 | 1983-03-14 | 黒木 常春 | Artificial sex |
| CN1494824A (en) * | 2002-02-02 | 2004-05-12 | 王桂军 | Cattle directional lemale-male breeding method solution |
| CN104255653A (en) * | 2014-09-16 | 2015-01-07 | 重庆东奇畜禽养殖有限公司 | Beef improvement technology |
| CN105638568A (en) * | 2016-03-03 | 2016-06-08 | 曲靖创亿农牧有限公司 | Beef cattle breeding method |
| CN205546849U (en) * | 2016-04-26 | 2016-09-07 | 临沂市畜牧站 | Sow breeding house |
Non-Patent Citations (1)
| Title |
|---|
| 王加启: "《现代奶牛养殖科学》", 31 March 2006, 中国农业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114747676A (en) * | 2022-05-06 | 2022-07-15 | 山东省畜牧总站(山东省种畜禽质量测定站) | Biological process for improving beef cattle breeding efficiency and composition thereof |
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Application publication date: 20181225 |