CN101361471A - High frequency efficient breeding control technique of meat sheep - Google Patents
High frequency efficient breeding control technique of meat sheep Download PDFInfo
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Abstract
The invention discloses a mutton sheep breeding and regulating technology with high frequency and high efficiency. In China, the mutton sheep breeding and regulating technology with high frequency and high efficiency is applied relatively widely, but the situation of organically combining a plurality of technologies and the popularization thereof does not appear. The technology comprises an oestrus hormone-regulation proposal, a production system and a high-efficiency breeding technology; wherein, the oestrus hormone-regulation proposal relates to a progestogen vaginal suppository-PMSG method, the production system of twice producing one year or three producing two year is adopted, the high-efficiency and high frequency breeding technology adopts gonadotropin, grouping hybridization and nutritional regulation. The technology is applied to high-efficiency industry which leads the sheep industry to develop into industrialization.
Description
Technical field:
The control technique of the present invention relates to a kind of mutton sheep high frequency, efficiently breeding.
Background technology:
From the eighties in 20th century, external many developed countries have begun to adopt aborning supporting technology to realize the scale High-efficient Production, and be characterized in: sheep field scale is big; the stocking density height; with short production cycle, reproduction rate and labor productivity height are raised many based on drylot feeding.At present, in sheep raising produces, extensively adopt advanced technologies such as efficient breeding management, the regulation and control of ewe oestrous cycle, nutrition regulation abroad, make sheep husbandry develop into the efficient industry that batch production is produced.From the development trend of batch production sheep raising, efficient breeding of mutton sheep high-frequency and nutrition regulation new technology are to realize the key technology of efficient sheep husbandry, also are decision sheep raising productivity effect and the primary restraining factors that adapt to market economy.The core of batch production sheep raising is the high efficiency breeding of ewe.The reproduction rate of ewe just directly has influence on the economic benefit of sheep raising.Therefore, not only will carry out efficient breeding to ewe in batch production sheep raising production system, also will carry out the high frequency breeding simultaneously, both are closely related, and complement one another.Here so-called efficient breeding is meant lamb quantity, quality and productivity effect efficient of each every ewe breeding, and the high-frequency breeding, then be meant every ewe in annual reproductive efficiency efficiently.Reaching these two kinds efficiently, fundamentally do not change existing sheep raising production model, do not adopt the biotechnology supporting technology of efficient breeding, is can not be actable.At home, the mutton sheep high-frequency is bred and efficient raising technology has also had more widely and applies, but the situation that two technology are organically combined and apply yet there are no.
Summary of the invention:
The purpose of this invention is to provide a kind of high frequency efficient propagation technique, adopt the breeding biotechnology, break the restriction of the seasonal breeding of ewe, all can oestrus throughout the year, and utilize this friendship of stud ram, hand mating, freeze smart semen deposition and intraperitoneal uterine horn insemination technique, thereby shortened the breeding cycle of ewe, reach the effect of high-frequency breeding, make full use of forage grass resource, the genetic ability for carcass weight that every ewe is improved every year reaches peak, adopt the external source reproductive hormone to handle the ewe that oestruses, make it once to produce polyembryony, improve the ewe lambing percentage.
Above-mentioned purpose realizes by following technical scheme:
High frequency efficient breeding control technique of meat sheep, its composition comprises: controlling rutting hormone scheme, production system and high efficiency breeding technology, described controlling rutting hormone scheme is progestational hormone vaginal plug-PMSG method, adopt the production system of 1 year two product or 2 years tertiary industrys, described high frequency efficient breeding technology adopts gonadotropin, breeding, nutrition regulation hive off.
Described high frequency efficient breeding control technique of meat sheep, described progestational hormone vaginal plug-PMSG method comprises processing scheme mating season: burying bolt same day is 0 day, bury bolt and removed bolt in 12-14 days, removing preceding 1-2 days of bolt or removing bolt and injected pregnant mare serum gonadotrop(h)in (PMSG) PMSG200-250IU the same day; The anestrous season processing scheme: burying bolt same day is 0 day, buries bolt and removes bolt in 9-12 days, is removing preceding 1-2 days of bolt or is removing bolt and injected pregnant mare serum gonadotrop(h)in (PMSG) PMSG250-300IU the same day; Handle ewe and after removing bolt, carried out natural mating, auxiliary breeding or artificial insemination in 1-1.5 days, guarantee the breeding effect; Wherein heeling-in progestational hormone spongy embolus can be realized the breeding of mutton sheep high frequency, reaches the regulation and control ewe and oestruses at any time, and the lamb management is convenient in estrus synchronization, breeding simultaneously, lambing simultaneously; Wherein inject pregnant mare serum gonadotrop(h)in (PMSG) and can realize efficient breeding, improve the polyembryony effect, improve and handle ewe per unit area yield lambing percentage.
Described high frequency efficient breeding control technique of meat sheep, described controlling rutting hormone scheme and supporting technology are that multiparity ewe or young ewe are that body weight reaches more than the adult ewe body weight 60%-65%, be born more than 7 monthly ages, the normal breeding of three feelings phases, anestrous season is handled the ram reproductive health care simultaneously, ewe has the body condition and the growth of livestock preferably, ewe has the wean interval more than 40 days, select supporting technology for use, comprise supporting medicine, unified program, optimize technology of artificial insemination, breeding time first, ewe the determining of situation of oestrusing, diagnosis of early gestation, composite management.
Described high frequency efficient breeding control technique of meat sheep produced the product system in described 1 year two or 2 years tertiary industry production systems need ewe is strengthened raising, and lamb ultra-early weaning controlling rutting, ewe polyembryony are handled, the early pregnancy inspection; Strict control ewe propagation production guarantees to handle 5 months period of pregnancys of ewe, carries out 1-2 month lamb lactation after the lambing, carries out the lamb early weaning then, and ewe is strengthened raising, rejuvenation, high frequency efficient breeding technical regulation, fixing breeding and lambing plan.
Described high frequency efficient breeding control technique of meat sheep, the described breeding of hiving off comprises handles ewe during burying bolt, must not contact with ram, the same day after removing bolt, ram should be put on examination feelings cloth, put into then and handle the ewe group, oestrus and induce, try the feelings inspection; After removing bolt 1-1.5 days, stud ram and ewe are pressed the ratio of 1:15, put into and handle ewe colony, carry out natural breeding, auxiliary breeding or artificial insemination, guarantee the breeding effect, improve conception rate.
Described high frequency efficient breeding control technique of meat sheep, described nourishing regulate and control technique comprise adopt before the breeding that short-term is excellently raised, supplementary feeding Ve and VA preparation, the white plumage French beans of supplementary feeding, supplementary feeding mineral trace element.
This technical scheme has following beneficial effect:
1. annual balanced production lamb, make full use of forage grass resource, the genetic ability for carcass weight that every ewe is improved every year reaches peak, bring into play the propagation production potentiality of ewe to greatest extent, according to the annual stable market supply prime lamb listing of the market demand, fund turnover period shortens, improve the availability of sheep raising facility to greatest extent, raise labour productivity, reduce cost, be convenient to factory management.
2. 1 year two product system can make the year reproduction rate of ewe improve 90～100%, and under the prerequisite that does not increase the sheepfold facility investment, the ewe productivity improves 1 times, and productivity effect improves more than 40～50%.
3. in order to reach annual balanced lambing, aborning, flock of sheep are divided into 4 groups that the lambing in August is staggered at interval mutually, arranged to produce for 1 time, and just had a collection of lamb to butcher listing like this every 2 months in per 2 months.If ewe gestation in the 1st group lost efficacy, can participate in next assembly kind after two months.Produce with this body weight tissue, production efficiency increases by 40% than 1 year one product system.
4. the prolification of ewe is the proterties with obvious hereditary feature.Analyze from anatomy, ewe is a uterus bicornis, is fit to bigeminal pregnancy.From production practices, many ewes not only can produce twin lamb(s), even can produce 3 tires and 4 tires.Improve the lambing percentage of ewe, can increase substantially the production economic benefit.
5. according to the working condition of various places, the ewe before breeding is carried out nutrition regulation handle, strengthen the input of short-term, can reach the effect of getting twice the result with half the effort.Generally speaking, take this processing, the ewe live-weight that makes in a short time before breeding increases by 3～5 kilograms, can improve the double lamb rate 5～10% of ewe.After treating the breeding beginning, recover normally to raise.Analyze from economic benefit, can not increase production cost, it is just right to drop into.
The specific embodiment of the present invention:
Embodiment 1:
High frequency efficient breeding control technique of meat sheep, its composition comprises: controlling rutting hormone scheme, production system and high efficiency breeding technology, described controlling rutting hormone scheme is progestational hormone vaginal plug-PMSG method, adopt the production system of 1 year two product or 2 years tertiary industrys, described high frequency efficient breeding technology adopts gonadotropin, breeding, nutrition regulation hive off.
Described high frequency efficient breeding control technique of meat sheep, described progestational hormone vaginal plug-PMSG method comprises processing scheme mating season: burying bolt same day is 0 day, bury bolt and removed bolt in 12-14 days, removing preceding 1-2 days of bolt or removing bolt and injected pregnant mare serum gonadotrop(h)in (PMSG) PMSG200-250IU the same day; The anestrous season processing scheme: burying bolt same day is 0 day, buries bolt and removes bolt in 9-12 days, is removing preceding 1-2 days of bolt or is removing bolt and injected pregnant mare serum gonadotrop(h)in (PMSG) PMSG250-300IU the same day; Handle ewe and after removing bolt, carried out natural mating, auxiliary breeding or artificial insemination in 1-1.5 days, guarantee the breeding effect; Wherein heeling-in progestational hormone spongy embolus can be realized the breeding of mutton sheep high frequency, reaches the regulation and control ewe and oestruses at any time, and the lamb management is convenient in estrus synchronization, breeding simultaneously, lambing simultaneously; Wherein inject pregnant mare serum gonadotrop(h)in (PMSG) and can realize efficient breeding, improve the polyembryony effect, improve and handle ewe per unit area yield lambing percentage.
Described high frequency efficient breeding control technique of meat sheep, described controlling rutting hormone scheme and supporting technology are that multiparity ewe or young ewe are that body weight reaches more than the adult ewe body weight 60%-65%, be born more than 7 monthly ages, the normal breeding of three feelings phases, anestrous season is handled the ram reproductive health care simultaneously, ewe has the body condition and the growth of livestock preferably, ewe has the wean interval more than 40 days, select supporting technology for use, comprise supporting medicine, unified program, optimize technology of artificial insemination, breeding time first, ewe the determining of situation of oestrusing, diagnosis of early gestation, composite management.
Described high frequency efficient breeding control technique of meat sheep produced the product system in described 1 year two or 2 years tertiary industry production systems need ewe is strengthened raising, and lamb ultra-early weaning controlling rutting, ewe polyembryony are handled, the early pregnancy inspection; Strict control ewe propagation production guarantees to handle 5 months period of pregnancys of ewe, carries out 1-2 month lamb lactation after the lambing, carries out the lamb early weaning then, and ewe is strengthened raising, rejuvenation, high frequency efficient breeding technical regulation, fixing breeding and lambing plan.
Described high frequency efficient breeding control technique of meat sheep, the described breeding of hiving off comprises handles ewe during burying bolt, must not contact with ram, the same day after removing bolt, ram should be put on examination feelings cloth, put into then and handle the ewe group, oestrus and induce, try the feelings inspection; After removing bolt 1-1.5 days, stud ram and ewe are pressed the ratio of 1:15, put into and handle ewe colony, carry out natural breeding, auxiliary breeding or artificial insemination, guarantee the breeding effect, improve conception rate.
Described high frequency efficient breeding control technique of meat sheep, described nourishing regulate and control technique comprise adopt before the breeding that short-term is excellently raised, supplementary feeding Ve and VA preparation, the white plumage French beans of supplementary feeding, supplementary feeding mineral trace element.
One, high frequency propagation technique
The high frequency propagation technique is along with efficient industrial sheep raising, particularly mutton sheep and prime lamb sheep produce and the High-efficient Production system that develops rapidly.High frequency efficient breeding control technique of meat sheep, its composition comprises: controlling rutting hormone scheme and supporting technology, production system and high efficiency breeding technology, the high frequency raising technology is selected progestational hormone vaginal plug-PMSG method for use, adopt 1 year two product or 2 years tertiary industry systems, efficient raising technology adopts gonadotropin and adopts nourishing regulate and control technique.
According to the characteristics of ewe reproductive physiology, it is very important to select to implement effective controlling rutting technology.From the theory and practice angle, progestational hormone-PMSG method should be done preferred option.Progestational hormone is preferably selected for use: progestational hormone vaginal sponge pin device is best.Mating season processing scheme: burying bolt same day is 0 day, buries bolt 12-14 days, removes behind the bolt 1-2 days, handles ewe and gets final product estrus synchronization.Also can inject pregnant mare serum gonadotrop(h)in (PMSG) (PMSG) 200-250IU (deciding), play the polyembryony effect in the previous day of removing bolt or the same day according to the body weight of burying the bolt sheep; The anestrous season processing scheme: burying bolt same day is 0 day, buries bolt 9-12 days, removes behind the bolt 1-2 days, handles ewe and gets final product estrus synchronization.Also can inject pregnant mare serum gonadotrop(h)in (PMSG) (PMSG) 250-300IU (deciding), play the polyembryony effect in the previous day of removing bolt or the same day according to the body weight of burying the bolt sheep;
Points for attention:
(1) be preferably in and remove bolt and carried out in preceding 1～2 day the inject time of PMSG, could eliminate like this because of removing the oestrogenic hormone peak that bolt causes suddenly to cause ovulation failure, as for preventing that repeatedly grabbing sheep causes stimulation to ewe, also can inject simultaneously removing bolt.This processing scheme meets safe and reliable requirement.Unlikely finally being impregnated of ewe impacted second and third feelings phase also can normally appear in first feelings phase conception failture.
(2) the ewe body weight reaches and grows up the ewe body weight more than 60%～65% then, and 7 monthly ages of being born adopt reproductive hormone to handle when above, can make the ewe successful reproduction.According to the characteristics that children's ewe reproductive organs in age is dissected, the processing scheme of estrus induction can adopt vagina heeling-in spongy embolus+PMSG.
(3) carry out controlling rutting, when particularly non-breeding sheep being implemented estrus induction, must adhere to the normal breeding of three feelings phases.The estrus induction of anestrous season ewe has bigger difficulty technically, mainly is the restriction that is subjected to ewe reproductive physiology in postpartum, and the activity of ewe ovary this moment is very low.The emphasis of handling should the time with heavy dose of ewe ovary that stimulates, through the stimulation of certain hour, remove progesterone suddenly, cooperate gonadotropin, may make most of ewes occur oestrusing and ovulating, even the first feelings phase is not pregnant, in second and third feelings phase that occurs subsequently, also can be impregnated.So, must adhere to handling the normal breeding of back three feelings phases.
When (4) ewe is handled in anestrous season estrus induction, must pay attention to the reproductive health care of ram simultaneously and handle.Anestrous season, the ewe ovary is in relative stationary condition, and the ram of this moment is in the static relatively of testis activity too, if not to the technology of ram reproductive health care, when handling ewe, ram is also taked corresponding processing, guaranteed the breeding capacity of ram, thereby conception rate is also higher.
(5) ewe of controlling rutting processing must have the body condition and the growth of livestock preferably, otherwise will have influence on the conception rate of handling ewe.
(6) anestrous season or mating season ewe is implemented controlling rutting, wean interval more than 40 days must be arranged, the lactation meeting causes ewe anterior pituitary prolactin secretory volume to increase, and causes that simultaneously the secretory volume of hypothalamus " interior opium " increases, and the two effect makes secretory volume and the frequency deficiency of LH.
(7) when carrying out the controlling rutting processing, also should select supporting technology especially for use.Supporting technology comprises supporting medicine, unified program, optimizes technology of artificial insemination, oestrus the determining of situation, diagnosis of early gestation, composite management etc. of breeding time, ewe first.Have only the employing supporting technology, could guarantee treatment effect, this technology performance is renderd a service, at most for High-efficient Production lays the foundation.
High frequency propagation production system:
(1) one year two product system
The product system can make the year reproduction rate of ewe improve 90～100% in 1 year two, and under the prerequisite that does not increase the sheepfold facility investment, the ewe productivity improves 1 times, and productivity effect improves more than 40～50%.The core technology of producing system in 1 year two is ewe controlling rutting, lamb ultra-early weaning, early pregnancy inspection.According to the requirement of produce producing in a year two, formulate the careful production schedule, will raise, animal doctor's health care, management etc. combine together, finally reach predetermined productive target.From existing empirical analysis, this production system is technology-intensive, and difficulty is big, as long as carry out according to standardization program, the target of producing in a year two can reach.First product that produced in 1 year two should be selected in December, and second product is selected in July.
(2) two years tertiary industry systems
Tertiary industry was a kind of production system that proposes the external later stage fifties in 2 years, used till today.Reach 2 years tertiary industrys, the necessary lambing in 8 months of ewe once.This production system generally has fixing breeding and lambing plan: as breeding in May, lambing in October; The breeding in January, the lambing in June; Breeding in September, the lambing in February.Lamb generally is 2 monthly ages wean, the ewe breeding in back 1 month of weaning.The core technology of this system is polyembryony processing, controlling rutting and the lamb early weaning of ewe, and reinforcement is fattened.
High efficiency breeding technology:
High efficiency breeding technology (being ewe polyembryony technology) is meant lamb quantity, quality and productivity effect efficient of each every ewe breeding; Adopt the external source reproductive hormone to handle the ewe that oestruses, make it once to produce polyembryony, improve ewe and produce high rate.
At present, be used to improve the method that ewe produces double lamb rate and mainly contain four kinds: the firstth, adopt gonadotropin, induce the ewe twins as PMSG; The secondth, adopt the reproduction immunological technique; The 3rd is to use embryo transfer technology; The 4th is to adopt nourishing regulate and control technique.But it is adopt gonadotropin and nourishing regulate and control technique method effect better, and relatively inexpensive.
1, gonadotropin
This method of the many employings of ewe to single tire kind.Generally be the 12nd～13 day in the ewe oestrous cycle, shot PMSG200-250IU, or handled 12～14 days with progestational hormone removes before the bolt more than the PMSG Injection 200-250IU.At anestrous season, need to increase hormone dosage.
Gonadotropic hormone is handled to handle with estrus synchronization and is combined, and promptly suitably increases the dosage of gonadotropin when handling the same period, can reach the purpose of carrying double lamb rate.
Directly use gonadotropin, because of ewe to hormone response the individual difference that exists of susceptibility, treatment effect is uncertain sometimes, must do prerun when selecting this scheme for use, because of kind, because of determining rational dosage and inject time in the area.
2, nourishing regulate and control technique
Nourishing regulate and control technique improves the ewe double lamb rate, mainly comprise adopt before the breeding that short-term is excellently raised, supplementary feeding Ve and VA preparation, the white plumage French beans of supplementary feeding, supplementary feeding mineral trace element etc., practice confirms that these measures can improve the reproduction rate of ewe.
According to the working condition of various places, the ewe before breeding is carried out nutrition regulation handle, strengthen the input of short-term, can reach the effect of getting twice the result with half the effort.Generally speaking, take this processing, the ewe live-weight that makes in a short time before breeding increases by 3～5 kilograms, can improve the double lamb rate 5～10% of ewe.After treating the breeding beginning, recover normally to raise.Analyze from economic benefit, can not increase production cost, it is just right to drop into.
In preceding 20 days supplementary feeding VE of breeding and VA mixture, can significantly improve the effect that immunity is handled to the ewe of handling through reproduction immunity.
Claims (8)
1. high frequency efficient breeding control technique of meat sheep, its composition comprises: controlling rutting hormone scheme, production system and high efficiency breeding technology, it is characterized in that: described controlling rutting hormone scheme is progestational hormone vaginal plug-PMSG method, adopt the production system of 1 year two product or 2 years tertiary industrys, described high frequency efficient breeding technology adopts gonadotropin, breeding, nutrition regulation hive off.
2. high frequency efficient breeding control technique of meat sheep according to claim 1, it is characterized in that: described progestational hormone vaginal plug-PMSG method comprises processing scheme mating season: burying bolt same day is 0 day, bury bolt and removed bolt in 12-14 days, removing preceding 1-2 days of bolt or removing bolt and injected pregnant mare serum gonadotrop(h)in (PMSG) PMSG200-250IU the same day; The anestrous season processing scheme: burying bolt same day is 0 day, buries bolt and removes bolt in 9-12 days, is removing preceding 1-2 days of bolt or is removing bolt and injected pregnant mare serum gonadotrop(h)in (PMSG) PMSG250-300IU the same day; Handle ewe and after removing bolt, carried out natural mating, auxiliary breeding or artificial insemination in 1-1.5 days, guarantee the breeding effect; Wherein heeling-in progestational hormone spongy embolus can be realized the breeding of mutton sheep high frequency, reaches the regulation and control ewe and oestruses at any time, and the lamb management is convenient in estrus synchronization, breeding simultaneously, lambing simultaneously; Wherein inject pregnant mare serum gonadotrop(h)in (PMSG) and can realize efficient breeding, improve the polyembryony effect, improve and handle ewe per unit area yield lambing percentage.
3. high frequency efficient breeding control technique of meat sheep according to claim 1 and 2, it is characterized in that: described controlling rutting hormone scheme and supporting technology are that multiparity ewe or young ewe are that body weight reaches more than the adult ewe body weight 60%-65%, be born more than 7 monthly ages, the normal breeding of three feelings phases, anestrous season is handled the ram reproductive health care simultaneously, ewe has the body condition and the growth of livestock preferably, ewe has the wean interval more than 40 days, select supporting technology for use, comprise supporting medicine, unified program, optimize technology of artificial insemination, breeding time first, ewe the determining of situation of oestrusing, diagnosis of early gestation, composite management.
4. high frequency efficient breeding control technique of meat sheep according to claim 1 and 2, it is characterized in that: described 1 year two generation product system or 2 years tertiary industry production systems need ewe is strengthened raising, and lamb ultra-early weaning controlling rutting, ewe polyembryony are handled, the early pregnancy inspection; Strict control ewe propagation production guarantees to handle 5 months period of pregnancys of ewe, carries out 1-2 month lamb lactation after the lambing, carries out the lamb early weaning then, and ewe is strengthened raising, rejuvenation, high frequency efficient breeding technical regulation, fixing breeding and lambing plan.
5. high frequency efficient breeding control technique of meat sheep according to claim 3, it is characterized in that: described 1 year two generation product system or 2 years tertiary industry production systems need ewe is strengthened raising, and lamb ultra-early weaning controlling rutting, ewe polyembryony are handled, the early pregnancy inspection; Strict control ewe propagation production guarantees to handle 5 months period of pregnancys of ewe, carries out 1-2 month lamb lactation after the lambing, carries out the lamb early weaning then, and ewe is strengthened raising, rejuvenation, high frequency efficient breeding technical regulation, fixing breeding and lambing plan.
6. according to claim 1 or 2 or 5 described high frequency efficient breeding control technique of meat sheep, it is characterized in that: the described breeding of hiving off comprises handles ewe during burying bolt, must not contact with ram, the same day after removing bolt, ram should be put on examination feelings cloth, put into then and handle the ewe group, oestrus and induce, try the feelings inspection; After removing bolt 1-1.5 days, stud ram and ewe are pressed the ratio of 1:15, put into and handle ewe colony, carry out natural breeding, auxiliary breeding or artificial insemination, guarantee the breeding effect, improve conception rate.
7. according to claim 1 or 2 or 5 described high frequency efficient breeding control technique of meat sheep, it is characterized in that: described nourishing regulate and control technique comprise adopt before the breeding that short-term is excellently raised, supplementary feeding Ve and VA preparation, the white plumage French beans of supplementary feeding, supplementary feeding mineral trace element.
8. high frequency efficient breeding control technique of meat sheep according to claim 6 is characterized in that: described nourishing regulate and control technique comprise adopt before the breeding that short-term is excellently raised, supplementary feeding Ve and VA preparation, the white plumage French beans of supplementary feeding, supplementary feeding mineral trace element.
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| CN102652502A (en) * | 2012-06-05 | 2012-09-05 | 福建省农业科学院畜牧兽医研究所 | Method for enhancing birth efficiency of lamb during lactation |
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| CN106942150A (en) * | 2017-04-21 | 2017-07-14 | 兰州三和羊业科技研究所 | A kind of high density propagation method of industrial sheep raising |
| CN107439479A (en) * | 2017-08-30 | 2017-12-08 | 巫山县振兴农牧科技开发有限公司 | A kind of black goat breeding method |
| CN109329213A (en) * | 2018-12-05 | 2019-02-15 | 贵州大学 | A method of improving the numb sheep litter size in Guizhou Province north |
| CN109589184A (en) * | 2019-01-18 | 2019-04-09 | 海南职业技术学院 | A kind of sequencing semen deposition method of black goat |
| CN111000934A (en) * | 2019-11-08 | 2020-04-14 | 内蒙古自治区农牧业科学院 | Method for promoting concentrated estrus of cashmere goats by using Chinese herbal medicine formula |
| CN113693020A (en) * | 2021-04-26 | 2021-11-26 | 赛朝格图 | Simple method for scattered breeding of twins of cattle on grassland |
| CN113424796A (en) * | 2021-07-29 | 2021-09-24 | 内蒙古骏羊牧业有限公司 | Dairy goat mating method |
| CN114097706A (en) * | 2021-11-12 | 2022-03-01 | 吉林省农业科学院 | Method for improving breeding speed of sheep |
| CN114258894A (en) * | 2021-12-24 | 2022-04-01 | 新疆畜牧科学院畜牧研究所 | Simple production process for simultaneous estrus treatment and twice artificial insemination of sheep |
| CN114258894B (en) * | 2021-12-24 | 2023-11-03 | 新疆畜牧科学院畜牧研究所 | Simple synchronous estrus treatment and twice artificial insemination production process for sheep |
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