CN103392672B - The breeding method of a kind of China meat polyembryony merino sheep strain - Google Patents
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Abstract
The present invention discloses a kind of breeding method of novel Chinese polyembryony mutton Merino strain.Breeding method of the present invention is: Chinese fine wool sheep ewe and Bu Lula merino sheep ram are carried out hybridization and obtains middle X cloth, centering X cloth hybridization F
1in generation, preferentially elegant male and female sheep carries out traversed by and fixes, and obtains middle X cloth traversed by F
1a generation, carries out hybridization and obtains middle X south and hybridize F by Chinese fine wool sheep ewe and South African Mutton profit slave sheep ram
1in generation, therefrom select outstanding ewe and South African Mutton merino ram to carry out hybridization in the F1 generation of X south and obtain that middle X is southern hybridizes F
2in generation, by middle X cloth traversed by F
1in generation, outstanding male and female sheep hybridizes F with middle X south respectively
2outstanding male and female sheep in generation hybridizes, and obtains middle X south X cloth hybridization F
1generation, then from centering X south X cloth hybridization F
1select to carry X cloth hybridization F in X south in the genotypic outstanding male and female sheep of B+ in generation
1in generation, carries out traversed by and fixes, and obtains middle X south X cloth traversed by F
1a generation, finally obtains the meat merino new lines of Chinese polyembryony.
Description
Technical field
The present invention relates to a kind of animal Cultivating techniques, the present invention relates to the breeding method of Chinese meat polyembryony merino sheep strain exactly.
Background technology
Polyembryony Mutton Merino is the prolificacy fine wool sheep kind that uniquely simultaneously can provide high-quality wool, mutton, be devoted to the production domesticization of polyembryony Mutton Merino, not only Absorbable organic halogens high-quality fine wool is produced, save foreign exchange, the raw material supplying of wool spinning processing enterprise of effective guarantee China, also can promote mutton production, will contribute to alleviating high, the in short supply situation of mutton valency, and meet the growth requirement of fine wool sheep in China completely.About 3,000 ten thousand fine wool sheep that China has at present are substantially on 10 fine wool sheep kind bases of the 1950's ~ 1980 oneself cultivation, according to the market demand, successively by introducing Australian Merino, German Merino, the kind containing different merino sheep gene formed after the merino sheep inter breed crossing improvement such as South Africa merino sheep, strain and Hybrids sheep etc., they are improving quantity and the quality of China's fine wool and mutton, meet demand (the domestic fine wool year about 100,000 tons of textile industry year about 400,000 tons of high-quality fine wools, import high-quality fine wool year about 300,000 tons) and the mutton aspects such as supply falls short of demand play an important role, and established solid foundation for the production domesticization of the meat polyembryony merino sheep of China.But, up to the present, can domesticize completely and China's polyembryony Mutton Merino new varieties with independent intellectual property right of polyembryony Mutton Merino can be still blank outside subrogate country.
South African Mutton merino is a meat hair dual-purpose type kind, there is good high-quality wool (wool fiber diameter 19.1 ~ 21.0 μm, staple length 8.0cm, grow up ewe clip 4 ~ 4.5 kg, adult ewe body weight 75 ~ 80 kg) and high feed conversion rate (3.91:1) production capacity, meet the current requirement to Mutton Merino hair, quality of mutton of China, but reproduction rate lower (150%), and polyembryony gene genetic mechanism it be unclear that, and is difficult to carry out seed selection with traditional breeding method and fixes.Bu Lula merino be in the world first find that high reproductive rate major gene resistance (FecB) has high-quality fine wool (wool fiber diameter 19.1 ~ 21.0 μm) kind of high reproductive rate (230%), application FecB gene molecule marker assisted Selection technology can be carried out the seed selection of polyembryony gene and be fixed.Therefore by South Africa merino, Bu Lula merino and 11 fine wool sheep kinds of cultivating for China, hybridize, the important economical traits such as South Africa merino, Bu Lula merino high-quality, high yield are polymerized with the proterties such as degeneration-resistant proterties, environmental suitability of Chinese fine wool sheep, cultivate the Chinese polyembryony Mutton Merino new varieties adapting to China's different ecological environment, realize the production domesticization of polyembryony Mutton Merino.
Summary of the invention
The invention provides the breeding method of a kind of China meat polyembryony merino sheep strain.
The breeding method of China of the present invention meat polyembryony merino sheep strain is:
1) Chinese fine wool sheep ewe and Bu Lula merino sheep ram are hybridized, adopt artificial insemination method, obtain Chinese fine wool sheep X Bu Lula merino sheep (hereinafter referred to as middle X cloth) and hybridize F
1in generation, described Chinese fine wool sheep is any one in Gansu Alpine Merino, Finewool, Chinese Merino, Xinjiang Merino, Fine-wool sheep, northeast thin-wool sheep, Erdos fine wool sheep, Shanxi fine wool sheep, Inner Mongolia Fine Wool, Xinjiang Merino;
2) centering X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+;
3) X cloth hybridization F in the genotypic outstanding male and female sheep of B+ will be carried
1in generation, carries out traversed by and fixes, and obtains middle X cloth traversed by F
1a generation, application BLUP genetic evaluation technology therefrom X cloth traversed by F
1select outstanding male and female sheep in generation, then carry out FecB genetic test to the outstanding male and female sheep selected, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+, BB;
4) Chinese fine wool sheep ewe and South African Mutton profit slave sheep ram hybridize, adopt artificial insemination method, obtain Chinese fine wool sheep X SA Meat Merino (hereinafter referred to as middle X south) hybridization F
1in generation, application BLUP genetic evaluation technology is from F
1outstanding ewe is selected in generation;
5) therefrom the outstanding ewe selected carries out grading up with South African Mutton merino ram in X south F1 generation, obtains middle X south and hybridizes F
2generation, application BLUP genetic evaluation technology therefrom X south hybridization F
2outstanding male and female sheep is selected in generation;
6) the genotypic middle X cloth traversed by F of B+, BB will be carried
1f is hybridized with middle X south respectively for outstanding male and female sheep
2in generation, outstanding male and female sheep hybridizes, and obtains middle X south X cloth hybridization F
1in generation, from F
1outstanding male and female sheep is selected in generation;
7) centering X south X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+;
8) X cloth hybridization F in X south in the genotypic outstanding male and female sheep of B+ will be carried
1in generation, carries out traversed by and fixes, and obtains middle X south X cloth traversed by F
1a generation, therefrom X south X cloth traversed by F
1outstanding male and female sheep is selected in generation;
9) centering X south X cloth traversed by F
1select outstanding male and female sheep to carry out FecB genetic test in generation, FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+, BB;
10) in, an X south X cloth traversed by generation expands numerous through the seed selection of continuous three generations again, obtains the meat merino new lines of Chinese polyembryony.
Adopt Chinese fine wool sheep and South African Mutton profit slave sheep, Bu Lula merino sheep to carry out a series of hybridization and finally obtain the meat merino new lines of Chinese polyembryony in method of the present invention.
South African Mutton merino is a meat hair dual-purpose type kind.SA Meat Merino is acerous, and body is large and wide deeply, and chest is open, and buttocks is broad, and leg is solid and sturdy.Male and female is all acerous, by hair white, homogeneity, not containing kemp, wool average fineness 21 ~ 23 microns (64), ram clip 4.5 ~ 6 kilograms of growing up, ewe clip 3.4 ~ 4.5 kilograms of growing up, scouring yield 65% ~ 70%, scopular long 82 millimeters naturally, coefficient of fineness variation 19.0%, the comfortable coefficient 94.0% of wool fibre.Adult ram body weight 120 ~ 130 kilograms, ewe body weight 75 ~ 80 kilograms of growing up.Out of season is bred, and under grazing condition, average lambing percentage 150%, under well-fed condition, lambing percentage can reach 250%.Under the rearing conditions that South Africa is extensive, ewe average daily gain is 350g, average 35 kilograms of 100 days old lamb live-weights, and under drylot feeding condition, the public Lamb liveweight of 100 ages in days can reach 56 kilograms.South African Mutton merino feed conversion rate is high, and in the lamb Fattening in shed stage, feed conversion rate is 3.91:1.South African Mutton merino lactation amount is high, and ewe disposition is docile, and maternal instinct is good, the highest day lactation amount reach 4.8 liters, under normal circumstances can lactation 2 ~ 3 lambs, be the desirable paternal kind of mutton sheep.
Bu Lula merino sheep derives from New South Wales,Australia Southern Plateau, by Bu Lula Yang Chang Seears brother and Australia Commonwealth Scientific and Industrial Research Organisation (CSIR O) be jointly bred as.Seears brother is very interested in the prlificacy of merino sheep, and start the ewe cohort selecting to produce triplet from nineteen forty-seven, about had 200 ~ 300 ewe polyembryony colonies by 1958, lambing percentage is up to 190%.When 1958, the same tire 1 that the animal heredity portion of CSIR O receives Seears brother donations produces 1 ram of 5 lambs, and they have purchased one full year of life ewe 12 with tire 3 ~ 4 lamb in Seears brother pasture subsequently, 2 years old ewe of 1 primiparity 3 lamb.1959 and nineteen sixty, CSIR O to receive again 1 of Seears brother donations be respectively the ram of 4 lambs and 1 with tire is the ram of 6 lambs with tire, and the tire that have purchased 2 ~ 6 years old from this pasture produces 91 ewes of many lambs, constitutes breeding group thus and carries out breeding.CSIR O finds, the prlificacy of Bu Lula merino sheep is determined by single key-gene FecB.Therefore, select to concentrate in ovulation rate and tire prolification, thus accelerate breeding process.Bu Lula merino sheep belongs to middle wool type (wool diameter 20 ~ 22 microns rolls over 64 ~ 66) merino sheep, and have the feature of this type sheep, clip is identical with Australian Merino with wool quality, and difference is that reproduction rate is high.Ram has spirality large and the angle of extension, and ewe is acerous.Use laparoscope observed result, the number of eggs ovulated average out to of 1.5 years old Bu Lula merino ewe 3.39, the ewe of 2.5 ~ 6.5 years old is 3.72, and maximum is 11.Add up according to 522 Bu Lula merino ewes (2 ~ 7 years old), a tire lambing average out to 2.29.
Breeding method of the present invention is cultivated the China's meat polyembryony merino sheep strain obtained and is remained the high-quality wool performance strong stress resistance of Chinese fine wool sheep, the advantage strong to Chinese different ecological environmental suitability, and both there is the excellent high reproductive rate characteristic of Bu Lula merino sheep, there is again the meat physical characteristic that SA Meat Merino is desirable.This new lines is compared with Chinese fine wool sheep, lambing percentage is high, can reach more than 150%, grow fast, physique is large, ram body weight of growing up reaches more than 90kg, ewe body weight reaches more than 55kg, and meat productivity is high, and meat is good, and strong adaptability, be suitable for herding, half drylot feeding and development high-quality wool and fattening production.
Accompanying drawing explanation
Accompanying drawing 1 fixes schematic diagram for China of the present invention meat polyembryony merino sheep incross seed selection and traversed by.
Embodiment
The present invention is below in conjunction with embodiment explanation.
one, a breeding method for China's meat polyembryony merino sheep strain, comprises the following steps:
(1) to a kind of fine wool sheep---the Gansu Alpine Merino in Chinese fine wool sheep, Bu Lula merino sheep, SA Meat Merino carries out identifying and assessing, qualification and the BULP genetic evaluation content of ewe comprise appearance build, age, body weight, reproductive performance, wool performance (wool production, wool fiber diameter, scouring yield), the qualification of ram and quantum evaluation comprise appearance build, age, body weight, reproductive performance, particularly, the selection criteria of Gansu Alpine Merino ewe is: physique is larger, physique is solid, hoof matter is fine and close, body body structure is well-balanced, width of chest is dark, carry on the back straight, rear quarters is plentiful, four limbs are solid, rectify strong.Ram has spirality angle, and neck has 1-2 horizontal gauffers; Ewe majority is acerous, and neck has vertical dewlap.Pure white by hair, closed is good, and more than density is medium, body body hair and belly wool are all in scopular structure, and capillus raw to informer.By mao mao clump natural length (12 months) at more than 80mm, average fibre diameter≤20.0 μm are good by the overall uniformity of hair; Bending clear, in normally curved; Oil sweat is moderate, accounts for scopular height >=50%, most in white or milky; Scouring yield more than 45%.Under natural grazing condition, ram hogg(et) average weight 39kg, clip 3.5kg, clean sourced fleece weight 1.6 kg, the average weight 32kg that ewes hogg, clip 3.0kg, clean sourced fleece weight 1.4kg; Grow up ram average weight 80kg, clip 7.0kg, clean sourced fleece weight 3.2 kg, and grow up ewe average weight 42kg, clip 3.5kg, clean sourced fleece weight 1.6kg; The lambing percentage more than 110% of multiparity ewe.
Bu Lula merino sheep ram selection criteria: Bu Lula merino sheep build is similar to rectangle, short legs, and body is wide, and back is straight, rear quarters fleshiness; Ram neck has 1 ~ 3 to grow complete or incomplete horizontal gauffer, and ewe has flourishing vertical gauffer.The fleece of this kind sheep, scopular well-formed, wool density is large, and fineness is even, oily sweat white, bends evenly neat and obviously, gloss is good.Wool covers head to two line, below forelimb to wrist joint or wrist joint, below hind leg to hock joint or hock joint.By mao mao clump natural length (12 months) at more than 80mm, average fibre diameter≤20.0 μm are good by the overall uniformity of hair; Bending clear, in normally curved; Oil sweat is moderate, accounts for scopular height >=50%, most in white or milky; Scouring yield more than 45%.Ram average weight of growing up is not less than 60kg, through FecB genetic test, carries BB genotype homozygote;
South African Mutton merino ram selection criteria: acerous, body is large and wide deeply, and chest is open, buttocks is broad, and leg is solid and sturdy.Male and female is all acerous, by hair white, homogeneity, not containing kemp, by mao mao clump natural length (12 months) at more than 80mm, average fibre diameter≤20.0 μm are good by the overall uniformity of hair; Bending clear, in normally curved; Oil sweat is moderate, accounts for scopular height >=50%, most in white or milky; Scouring yield more than 45%.Adult ram body weight 120 ~ 130 kilograms.Out of season is bred, under grazing condition, and average lambing percentage 150%.
(2) select 2500 Gansu Alpine Merino breeding group ewes and be divided into 2 groups, often organize 1250, hybridize with Bu Lula merino sheep, South African Mutton merino ram respectively every year, adopt artificial insemination method, obtain middle X cloth (Chinese fine wool sheep X Bu Lula merino sheep) first familiar generation, middle X south (Chinese fine wool sheep X SA Meat Merino) hybridize F
1generation, from about 2000 merely hit X cloth, middle X south hybridization F
1select and remain in godmother lamb X cloth in 1200 conducts, middle X south hybridization F
1for standby ewe, X cloth, middle X south hybridization F in 600 outstanding ewe compositions of finally selecting and remain
1for basis female flock of sheep; Therefrom X cloth, middle X south hybridization F
1generation in select and remain outstanding ewe time mainly consider shape and appearance, birth weight, weaning weight, six-month-old weight, build, head dummy tend to Chinese fine wool sheep feature, by hair compact conformation, physique is large, and the bridge of the nose swells, and back of the body waist is straight, the meat bodily form is obvious, more than birth weight 3.5kg, more than weaning weight 25kg, heavy more than the 32kg of six-month-old, one full year of life ewes hogg average weight>=40kg, clean sourced fleece weight 2.6kg; Average fibre diameter≤20.0 μm; And first 300 of application BLUP genetic evaluation scoring.Centering X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+; Then from X cloth, middle X south hybridization F output thereafter
1continuous seed selection in godmother lamb, X cloth, middle X south hybridization F in expansion
1for the quantity of basis female flock of sheep
(3) X cloth hybridization F in the genotypic outstanding male and female sheep of B+ will be carried
1in generation, carries out traversed by and fixes, and adopts artificial insemination method, obtains middle X cloth traversed by F
1a generation, to merely hit the X cloth traversed by F in 150 conducts that to select and remain X cloth traversed by F1 generation ewe lamb from about 200
1for standby ewe, X cloth traversed by F in 100 outstanding ewe compositions of finally selecting and remain
1for basis female flock of sheep; Therefrom X cloth traversed by F
1generation in select and remain outstanding ewe time mainly consider shape and appearance, birth weight, weaning weight, six-month-old weight, build, head dummy tend to Chinese fine wool sheep feature, by hair compact conformation, physique is large, and the bridge of the nose swells, and back of the body waist is straight, the meat bodily form is obvious, more than birth weight 3.5kg, more than weaning weight 25kg, heavy more than the 35kg of six-month-old, one full year of life ewes hogg average weight>=34kg, clean sourced fleece weight 2.6kg; Average fibre diameter≤20.0 μm; And first 100 of application BLUP genetic evaluation scoring.Centering X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of BB, B+; Then from X cloth traversed by F output thereafter
1continuous seed selection in godmother lamb, X cloth traversed by F in expansion
1for the quantity of basis female flock of sheep
(4) by middle X south hybridization F
1the outstanding ewe selected in generation and South African Mutton merino ram carry out grading up, adopt artificial insemination method, obtain middle X south hybridization F
2in generation, merely hitting from about 180, X is southern hybridizes F
2select and remain in godmother lamb hybridization F in X south in 120 conducts
2standby ewe, hybridization F in X south in 80 outstanding ewe compositions of finally selecting and remain
2basis female flock of sheep; Therefrom X south hybridization F
2in select and remain outstanding ewe time mainly consider shape and appearance, birth weight, weaning weight, six-month-old weight, build, head dummy trend male parent, by hair compact conformation, physique is large, and the bridge of the nose swells, and back of the body waist is straight, the meat bodily form is obvious, more than birth weight 4.0kg, more than weaning weight 25kg, heavy more than the 35kg of six-month-old, one full year of life ewes hogg more than average weight 50kg, more than clean sourced fleece weight 2.6kg; Average fibre diameter≤20.0 μm; And first 80 of application BLUP genetic evaluation scoring.Then from hybridization F in X south output thereafter
2continuous seed selection in ewe lamb, hybridization F in X south in expansion
2for the quantity of basis female flock of sheep
(5) the genotypic middle X cloth traversed by F of BB, B+ will be carried
1f is hybridized with middle X south respectively for outstanding male and female sheep
2in generation, outstanding male and female sheep hybridizes, and adopts artificial insemination method, obtains middle X south X cloth (Chinese fine wool sheep X Bu Lula merino sheep X SA Meat Merino) and hybridizes F
1in generation, to merely hit X south X cloth hybridization F from about 200
1select and remain in ewe lamb X south X cloth hybridization standby ewe in 120 conducts, in 80 outstanding ewes compositions of finally selecting and remain, X south X cloth hybridization F1 is for basis female flock of sheep; Therefrom select and remain in X south X cloth hybridization F1 generation outstanding ewe time mainly consider shape and appearance, birth weight, weaning weight, six-month-old weight, build, head dummy tend to Chinese fine wool sheep feature, by hair compact conformation, physique is large, and the bridge of the nose swells, and back of the body waist is straight, the meat bodily form is obvious, more than birth weight 4.0kg, more than weaning weight 25kg, heavy more than the 35kg of six-month-old, one full year of life ewes hogg more than average weight 46kg, more than clean sourced fleece weight 2.3kg; Average fibre diameter≤20.0 μm; And first 80 of application BLUP genetic evaluation scoring.Select outstanding male and female sheep to carry out FecB genetic test in centering X south X cloth hybridization F1 generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+; Then constantly seed selection from X cloth traversed by F1 godmother lamb output thereafter, in expansion, X cloth traversed by F1 is for the quantity of basis female flock of sheep
(8) X cloth hybridization F in X south in the genotypic outstanding male and female sheep of B+ will be carried
1in generation, carries out traversed by and fixes, and adopts artificial insemination method, obtains middle X south X cloth traversed by F
1a generation, to merely hit X south X cloth traversed by F from about 200
1to select and remain in ewe lamb X south X cloth traversed by standby ewe in 120 conducts, X south X cloth traversed by F in 80 outstanding ewes compositions of finally selecting and remain
1for basis female flock of sheep; Therefrom X south X cloth traversed by F
1generation in select and remain outstanding ewe time mainly consider shape and appearance, birth weight, weaning weight, six-month-old weight, build, head dummy tend to Chinese fine wool sheep feature, by hair compact conformation, physique is large, and the bridge of the nose swells, and back of the body waist is straight, the meat bodily form is obvious, more than birth weight 4.0kg, more than weaning weight 25kg, heavy more than the 35kg of six-month-old, one full year of life ewes hogg more than average weight 46kg, more than clean sourced fleece weight 2.3kg; Average fibre diameter≤20.0 μm; And first 80 of application BLUP genetic evaluation scoring.Centering X south X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+; Then from X cloth traversed by F in X south output thereafter
1continuous seed selection in godmother lamb, X cloth traversed by F in X south in expansion
1for the quantity of basis female flock of sheep.
(9) in, an X south X cloth traversed by generation expands numerous through the traversed by seed selection of 3 generations again, obtains Chinese meat polyembryony merino new lines.Select outstanding male and female sheep to carry out FecB genetic test in centering X south X cloth traversed by each generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of BB, B+; Then constantly seed selection from each godmother lamb of X south X cloth traversed by output thereafter, in expansion, X south X cloth traversed by is respectively for the quantity of basis female flock of sheep, to form Chinese meat polyembryony merino sheep strain.
China's meat polyembryony merino sheep strain productivity of cultivating reaches following standard: appearance traits meets merino sheep feature, side staple length is at more than 8.0cm, fineness is based on 19.1 ~ 21.0 μm, wool fineness is even, bending in obvious, oil sweat is in white or milky, and side scouring yield 60%(wears sheep coat).Grow up ram average weight 90kg, clean sourced fleece weight 5.5 kg, and grow up ewe average weight 55kg, clean sourced fleece weight 2.7kg; Ram hogg(et) average weight 64kg, clean sourced fleece weight 3.5 kg, ewe hogg average weight 46kg, clean sourced fleece weight 2.3kg; Multiparity ewe lambing percentage is 150% ~ 180%.Sheep dressing percentage of growing up is 50%, and pure meat percentage is 37%.
Claims (1)
1. the breeding method of Chinese meat polyembryony merino sheep strain, is characterized in that:
1) Chinese fine wool sheep ewe and Bu Lula merino sheep ram are hybridized, adopt artificial insemination method, obtain Chinese fine wool sheep X Bu Lula merino sheep, hereinafter referred to as: middle X cloth, hybridization F
1generation;
2) centering X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+;
3) X cloth hybridization F in the genotypic outstanding male and female sheep of B+ will be carried
1in generation, carries out traversed by and fixes, and obtains middle X cloth traversed by F
1a generation, application BLUP genetic evaluation technology therefrom X cloth traversed by F
1select outstanding male and female sheep in generation, then carry out FecB genetic test to the outstanding male and female sheep selected, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+, BB;
4) Chinese fine wool sheep ewe and SA Meat Merino ram hybridize, and adopt artificial insemination method, obtain Chinese fine wool sheep X SA Meat Merino-middle X south hybridization F
1in generation, application BLUP genetic evaluation technology is from F
1outstanding ewe is selected in generation;
5) therefrom the outstanding ewe selected carries out grading up with South African Mutton merino ram in X south F1 generation, obtains middle X south and hybridizes F
2generation, application BLUP genetic evaluation technology therefrom X south hybridization F
2outstanding male and female sheep is selected in generation;
6) the genotypic middle X cloth traversed by F of B+, BB will be carried
1f is hybridized with middle X south respectively for outstanding male and female sheep
2in generation, outstanding male and female sheep hybridizes, and obtains middle X south X cloth hybridization F
1in generation, from F
1outstanding male and female sheep is selected in generation;
7) centering X south X cloth hybridization F
1select outstanding male and female sheep to carry out FecB genetic test in generation, application FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+;
8) X cloth hybridization F in X south in the genotypic outstanding male and female sheep of B+ will be carried
1in generation, carries out traversed by and fixes, and obtains middle X south X cloth traversed by F
1a generation, therefrom X south X cloth traversed by F
1outstanding male and female sheep is selected in generation;
9) centering X south X cloth traversed by F
1select outstanding male and female sheep to carry out FecB genetic test in generation, FecB gene molecule marker assisted Selection technology is selected and remain and is carried the genotypic outstanding male and female sheep of B+, BB;
10) in, an X south X cloth traversed by generation expands numerous through the seed selection of continuous three generations again, obtains the meat merino strain of Chinese polyembryony.
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| CN105850884B (en) * | 2016-04-28 | 2019-01-18 | 张家口圣达牧业有限公司 | Five yuan of hybridization multiparous new strain breeding methods of Mutton Sheep |
| CN106332843B (en) * | 2016-10-24 | 2017-10-31 | 福建省努比亚农牧有限公司 | A kind of breeding method of improved mutton sheep strain |
| CN107996515A (en) * | 2017-12-28 | 2018-05-08 | 吉林省农业科学院 | A kind of breeding method of northeast mutton type fine-wool sheep new lines |
| CN109619041A (en) * | 2019-01-17 | 2019-04-16 | 新疆农垦科学院 | A kind of dual-purpose sheep new strain cultivation method |
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| CN101861847A (en) * | 2010-06-29 | 2010-10-20 | 河南科技大学 | Method for breeding new strain for Yuxi fatty-tailed mutton |
| CN101946749A (en) * | 2010-08-09 | 2011-01-19 | 郑州牧业工程高等专科学校 | Method for breeding red-head mutton goat new strain |
| CN102405881A (en) * | 2011-08-17 | 2012-04-11 | 甘肃农业大学 | Method for breeding meat and wool dual-purpose new variety of Gansu alpine merino |
| CN102812925A (en) * | 2012-08-10 | 2012-12-12 | 普安县畜牧养殖协会 | Breeding method for Puan black goat line |
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| 绵羊多胎主效基因FecB 分子检测方法的建立与应用;储明星等;《农业生物技术学报》;20091231;第17卷(第1期);第52-58页 * |
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