CN110839589A - Cross breeding method for Tan sheep and Hu sheep - Google Patents
Cross breeding method for Tan sheep and Hu sheep Download PDFInfo
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- 241001494479 Pecora Species 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000009402 cross-breeding Methods 0.000 title claims abstract description 20
- 238000009396 hybridization Methods 0.000 claims abstract description 12
- 230000003213 activating effect Effects 0.000 claims abstract description 8
- 238000005138 cryopreservation Methods 0.000 claims abstract description 8
- 230000009027 insemination Effects 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims description 35
- 210000004209 hair Anatomy 0.000 claims description 23
- 210000000689 upper leg Anatomy 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 230000037308 hair color Effects 0.000 claims description 12
- 230000037396 body weight Effects 0.000 claims description 8
- 210000003414 extremity Anatomy 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002932 luster Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 3
- 235000013372 meat Nutrition 0.000 abstract description 8
- 210000002268 wool Anatomy 0.000 abstract description 5
- 230000002068 genetic effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 108090000623 proteins and genes Proteins 0.000 abstract description 3
- 238000009395 breeding Methods 0.000 description 8
- 230000001488 breeding effect Effects 0.000 description 5
- 210000002414 leg Anatomy 0.000 description 4
- 210000003754 fetus Anatomy 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 235000019687 Lamb Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 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
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Abstract
The invention discloses a crossbreeding method of Tan sheep and Hu sheep, which comprises the following steps: (1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, and meanwhile, collecting sperms of the male parent of the Tan sheep to perform cryopreservation; (2) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance; (3) activating the sperms of the male parent of the Tan sheep, and selecting excellent F2 generation hybrid female parent for artificial insemination to obtain F3 generation hybrid variety with stable inheritance; (4) and (3) selecting excellent F3 generation hybrid varieties for intraspecific propagation to obtain F4 generation hybrid varieties with stable inheritance. In the invention, the crossbred sheep effectively inherits excellent genes of fresh meat quality, extremely light mutton smell, longer wool and the genetic characteristics of strong environmental adaptability, rapid propagation and high meat yield of the Hu sheep.
Description
Technical Field
The invention relates to the technical field of livestock breeding, in particular to a crossbreeding method of Tan sheep and Hu sheep.
Background
The Hu sheep is one of important domestic animals in Taihu plain, is also a domestic first-class protection local livestock and poultry variety, is a rare white lamb skin sheep variety, has excellent properties of precocity, four-season estrus, two fetuses in one year, multiple lambs in each fetuse, good lactation performance, fast growth and development, strong adaptability, capability of being generally cultured and the like, but has the advantages of heavy smell of the Hu mutton, poor eating effect, short wool and low practical utilization value, the Tan sheep is a branch of Mongolian sheep, the male sheep has a spiral large angle, the female sheep has no corners or small corners, is whitish, has a long smell, has a 7cm long hair length, has 5-7 bent and beautiful fringes, is jade white, bright, light and warm, is a famous fur raw material, is tender in the meat quality of the Tan sheep, has extremely light fishy smell, uniform fat distribution and rich nutrition, is a top grade in mutton, but has typical geographical distribution characteristics, the hybrid breeding method for the Tan sheep and the Hu sheep has the advantages that the hybrid breeding method for the Tan sheep and the Hu sheep can cultivate varieties with excellent characteristics of the Tan sheep and the Hu sheep, and improves the breeding economy and the edible value of the Hu sheep.
Disclosure of Invention
The invention aims to: in order to solve the problems, the method for crossbreeding the Tan sheep and the Hu sheep is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a crossbreeding method of Tan sheep and Hu sheep comprises the following steps:
(1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, and meanwhile, collecting sperms of the male parent of the Tan sheep to perform cryopreservation;
(2) and (3) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance.
(3) Activating the sperms of the male parent of the Tan sheep, and selecting the excellent F2 generation hybrid female parent for artificial insemination to obtain the F3 generation hybrid variety with stable inheritance.
(4) And (3) selecting excellent F3 generation hybrid varieties for intraspecific propagation to obtain F4 generation hybrid varieties with stable inheritance.
(5) And selecting excellent F4 generation hybrid varieties for expanded culture.
The technical proposal is further described that the Tan sheep and the Hu sheep avoid the random mating of the whole siblings and the half siblings in the hybridization process:
the selection standard of the Tan sheep male parent is as follows: the four limbs are strong, the body hair is pure white, the luster is good, the body weight is more than or equal to 43kg, the body height is more than or equal to 69cm, the body slant length is more than or equal to 76cm, and the chest circumference is more than or equal to 88 cm; selecting female parent of Hu sheep according to the standard: the limbs are healthy and strong, and the body weight is more than or equal to 40 kg.
As a further description of the above technical solution:
the excellent male parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
As a further description of the above technical solution:
the excellent female parent standard of F2 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
As a further description of the above technical solution:
the excellent male parent standard of F3 is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F3 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
As a further description of the above technical solution:
and during the hybridization process of the Tan sheep and the Hu sheep, the random mating of the full siblings and the half siblings is avoided.
As a further description of the above technical solution:
the sperm are cryopreserved in a liquid nitrogen environment.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the Tan sheep is selected as a male parent and the Hu sheep is selected as a female parent to carry out captive hybridization to obtain an F1 generation hybrid variety, meanwhile, collecting the sperms of the male parent of the Tan sheep for cryopreservation, selecting excellent hybrid variety F1 generation for intraspecific propagation to obtain hybrid variety F2 generation with stable inheritance, activating the sperms of the male parent of the Tan sheep, selecting excellent F2 generation hybrid female parent for artificial insemination to obtain F3 generation hybrid variety with stable inheritance, selecting excellent F3 generation hybrid variety for intra-species propagation to obtain F4 generation hybrid variety with stable inheritance, selecting excellent F4 generation hybrid variety for expanded cultivation, therefore, the hybrid effectively inherits the excellent genes of fresh meat, light mutton smell, long wool and the genetic characteristics of strong environmental adaptability, rapid propagation and high meat yield of the Hu sheep.
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FIG. 1 is a comparison table of the crossbreeding method of Tan sheep and Hu sheep;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a crossbreeding method of Tan sheep and Hu sheep includes the following steps:
(1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, wherein the selection standard of the Tan sheep male parent is as follows: the four limbs are strong, the body hair is pure white, the luster is good, the body weight is more than or equal to 43kg, the body height is more than or equal to 69cm, the body slant length is more than or equal to 76cm, and the chest circumference is more than or equal to 88 cm; selecting female parent of Hu sheep according to the standard: the arms and legs are strong, the weight is more than or equal to 40kg, meanwhile, the sperms of the Tan sheep male parent are collected for cryopreservation, and the sperms are cryopreserved in a liquid nitrogen environment;
(2) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance, wherein the excellent F1 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(3) activating the sperms of the male parent of the Tan sheep, selecting excellent F2 generation hybrid female parent for artificial insemination to obtain an F3 generation hybrid variety with stable inheritance, wherein the F2 excellent female parent standard is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(4) selecting excellent F3 generation hybrid varieties for intraspecific propagation to obtain F4 generation hybrid varieties with stable inheritance, wherein the excellent F3 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the six-month-old is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, and the bending number is more than or equal to 5;
(5) selecting excellent F4 generation hybrid varieties for expanded culture, wherein the F4 excellent male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 6, the hair color is pure white, and the excellent female parent standard of F5 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
Example 2
Referring to fig. 1, a crossbreeding method of Tan sheep and Hu sheep includes the following steps:
(1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, wherein the selection standard of the Tan sheep male parent is as follows: the four limbs are strong, the body hair is pure white, the luster is good, the body weight is more than or equal to 43kg, the body height is more than or equal to 69cm, the body slant length is more than or equal to 76cm, and the chest circumference is more than or equal to 88 cm; selecting female parent of Hu sheep according to the standard: the arms and legs are strong, the weight is more than or equal to 40kg, meanwhile, the sperms of the Tan sheep male parent are collected for cryopreservation, and the sperms are cryopreserved in a liquid nitrogen environment;
(2) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance, wherein the excellent F1 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(3) activating the sperms of the male parent of the Tan sheep, selecting the F2 generation hybrid female parent for artificial insemination to obtain the F3 generation hybrid variety with stable inheritance, wherein the F2 female parent standard is as follows: the weight of the newborn is less than 3.5kg, the weight of the weaning is less than 23kg, the weight of the junior is less than 34kg, the weight of the newborn thigh is less than 5cm, and the bending number is less than 5;
(4) selecting excellent F3 generation hybrid varieties for intraspecific propagation to obtain F4 generation hybrid varieties with stable inheritance, wherein the excellent F3 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the six-month-old is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, and the bending number is more than or equal to 5;
(5) selecting excellent F4 generation hybrid varieties for expanded culture, wherein the F4 excellent male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 6, the hair color is pure white, and the excellent female parent standard of F5 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
Example 3
Referring to fig. 1, a crossbreeding method of Tan sheep and Hu sheep includes the following steps:
(1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, wherein the selection standard of the Tan sheep male parent is as follows: the four limbs are strong, the body hair is pure white, the luster is good, the body weight is more than or equal to 43kg, the body height is more than or equal to 69cm, the body slant length is more than or equal to 76cm, and the chest circumference is more than or equal to 88 cm; selecting female parent of Hu sheep according to the standard: the arms and legs are strong, the weight is more than or equal to 40kg, meanwhile, the sperms of the Tan sheep male parent are collected for cryopreservation, and the sperms are cryopreserved in a liquid nitrogen environment;
(2) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance, wherein the excellent F1 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(3) activating the sperms of the male parent of the Tan sheep, selecting excellent F2 generation hybrid female parent for artificial insemination to obtain an F3 generation hybrid variety with stable inheritance, wherein the F2 excellent female parent standard is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(4) selecting an F3 generation hybrid variety for intraspecific propagation to obtain an F4 generation hybrid variety with stable inheritance, wherein the F3 male parent standard is as follows: the weight of the newborn is less than 3.8kg, the weight of the weaning is less than 25kg, the weight of the junior is less than 35kg, the weight of the newborn thigh is less than 5cm, and the bending number is less than 5;
(5) selecting excellent F4 generation hybrid varieties for expanded culture, wherein the F4 excellent male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 6, the hair color is pure white, and the excellent female parent standard of F5 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
Example 4
Referring to fig. 1, a crossbreeding method of Tan sheep and Hu sheep includes the following steps:
(1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, wherein the selection standard of the Tan sheep male parent is as follows: the four limbs are strong, the body hair is pure white, the luster is good, the body weight is more than or equal to 43kg, the body height is more than or equal to 69cm, the body slant length is more than or equal to 76cm, and the chest circumference is more than or equal to 88 cm; selecting female parent of Hu sheep according to the standard: the arms and legs are strong, the weight is more than or equal to 40kg, meanwhile, the sperms of the Tan sheep male parent are collected for cryopreservation, and the sperms are cryopreserved in a liquid nitrogen environment;
(2) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance, wherein the excellent F1 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(3) activating the sperms of the male parent of the Tan sheep, selecting excellent F2 generation hybrid female parent for artificial insemination to obtain an F3 generation hybrid variety with stable inheritance, wherein the F2 excellent female parent standard is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5;
(4) selecting excellent F3 generation hybrid varieties for intraspecific propagation to obtain F4 generation hybrid varieties with stable inheritance, wherein the excellent F3 male parent standard is as follows: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the six-month-old is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, and the bending number is more than or equal to 5;
(5) selecting excellent F4 generation hybrid varieties for expanded culture, wherein the F4 male parent standard is as follows: birth weight <3.8kg, weaning weight <25kg, junior weight <35kg, birth hair strand <5cm, number of bends <6, F5 excellent maternal criteria: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
Wherein, compared with the example 1, the female parent of F2 in the step (3) does not reach the excellent standard, and the rest is the same as the example 1; example 3 compared with example 1, the male parent F3 in step (4) did not meet the excellent standard, and the rest is the same as example 1; example 4 compared with example 1, in step (5), the male parent F4 does not meet the excellent standard, and the rest is the same as example 1;
under the same conditions, experimental records of breeding success rate, disease rate, meat quality evaluation (comprising A, B, C, D four grades) and wool length are respectively carried out on example 1, example 2 and example 3 by comparison: as shown in fig. 1, the results of the comprehensive experiment can be obtained: the hybridization breeding method can improve the success rate of hybridization breeding and the excellent genetic characteristics of the hybrid variety, so that the hybrid variety effectively inherits the excellent genes of fresh meat quality, extremely light mutton smell, longer wool and the genetic characteristics of strong environmental adaptability, quick breeding and high meat yield of Hu sheep.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A crossbreeding method of Tan sheep and Hu sheep is characterized by comprising the following steps:
(1) selecting Tan sheep as a male parent and Hu sheep as a female parent to perform captive hybridization to obtain an F1 generation hybrid variety, and meanwhile, collecting sperms of the male parent of the Tan sheep to perform cryopreservation;
(2) selecting excellent F1 generation hybrid varieties for intraspecific propagation to obtain F2 generation hybrid varieties with stable inheritance;
(3) activating the sperms of the male parent of the Tan sheep, and selecting excellent F2 generation hybrid female parent for artificial insemination to obtain F3 generation hybrid variety with stable inheritance;
(4) selecting excellent F3 generation hybrid varieties for intraspecific propagation to obtain F4 generation hybrid varieties with stable inheritance;
(5) and selecting excellent F4 generation hybrid varieties for expanded culture.
2. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 1, wherein the selection criteria of Tan sheep male parent is: the four limbs are strong, the body hair is pure white, the luster is good, the body weight is more than or equal to 43kg, the body height is more than or equal to 69cm, the body slant length is more than or equal to 76cm, and the chest circumference is more than or equal to 88 cm; selecting female parent of Hu sheep according to the standard: the limbs are healthy and strong, and the body weight is more than or equal to 40 kg.
3. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 1, wherein the excellent male parent standard of F1 is: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F1 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
4. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 1, wherein the excellent female parent standard of F2 is: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
5. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 4, wherein the excellent male parent standard of F3 is: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F3 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
6. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 1, wherein the excellent male parent standard of F4 is: the weight of the newborn is more than or equal to 3.8kg, the weight of the weaning is more than or equal to 25kg, the weight of the junior is more than or equal to 35kg, the weight of the newborn hair is more than or equal to 5cm, the bending number is more than or equal to 5, the hair color is pure white, and the excellent female parent standard of F5 is as follows: the weight of the newborn is more than or equal to 3.5kg, the weight of the weaning is more than or equal to 23kg, the weight of the six-month-old is more than or equal to 34kg, the weight of the newborn thigh is more than or equal to 5cm, and the bending number is more than or equal to 5.
7. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 1, wherein the Tan sheep and the Hu sheep avoid the random mating of full siblings and half siblings during the crossbreeding process.
8. The crossbreeding method of Tan sheep and Hu sheep as claimed in claim 1, wherein the sperm is frozen and preserved in liquid nitrogen environment.
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| CN201910961885.4A CN110839589A (en) | 2019-10-11 | 2019-10-11 | Cross breeding method for Tan sheep and Hu sheep |
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Cited By (2)
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| CN114009396A (en) * | 2021-10-20 | 2022-02-08 | 赤峰市吉羊牧业有限公司 | Method for breeding small-tailed sheep hybrid variety by hybridization of Dorper sheep and small-tailed Han sheep |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243336A (en) * | 2021-06-17 | 2021-08-13 | 河北正农牧业有限公司 | Commercial pig hybridization breeding method |
| CN114009396A (en) * | 2021-10-20 | 2022-02-08 | 赤峰市吉羊牧业有限公司 | Method for breeding small-tailed sheep hybrid variety by hybridization of Dorper sheep and small-tailed Han sheep |
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