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A kind of hybrid breeding method of new line of Kenong mutton sheep

A breeding method and technology of new strains, applied in the field of breeding new sheep strains, can solve the problems of reduced fecundity and small increase in growth rate, etc.

Inactive Publication Date: 2016-05-04
洛宁农本畜牧科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The average daily gain before weaning of the first generation of Duhan was significantly higher than that of the second and third generations of Duhan. It can be seen that the growth rate of the second and third generations of progressive hybridization increased very little, and the fecundity further decreased

Method used

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  • A kind of hybrid breeding method of new line of Kenong mutton sheep

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Effect test

Embodiment 1

[0078] A hybrid breeding method for a new line of Kenong mutton sheep, comprising the following steps:

[0079] Step 1. Select male and female breeding sheep from the small-tailed Han sheep to form the basic female breeding flock and the male breeding flock of the Small-tailed Han sheep respectively;

[0080] Selection criteria for small-tailed cold ewes: handsome head, pale complexion, thin eyelids and red eyes, only horn bases without obvious horns, large and drooping ears, rough hair, wide waist, large rump, multiple births, and many teats, using molecular markers Assisted selection technology identified that all of them contain multiple birth genes, and their adult body weight is more than 70 kg;

[0081] Small-tailed Han ram selection criteria: rams have big head, thick neck, well-developed spiral horns; well-developed forequarters, wide and deep chest, open ribs, straight back and waist; long, barrel-shaped body; tall, strong limbs Straightforward; short fat tail, tail ...

Embodiment 2

[0111] A hybrid breeding method for a new line of Kenong mutton sheep, comprising the following steps:

[0112] Step 1. Select male and female breeding sheep from the small-tailed Han sheep to form the basic female breeding flock and the male breeding flock of the Small-tailed Han sheep respectively;

[0113] Selection criteria for small-tailed cold ewes: handsome head, pale complexion, thin eyelids and red eyes, only horn bases without obvious horns, large and drooping ears, rough hair, wide waist, large rump, multiple births, and many teats, using molecular markers Assisted selection technology identified that all of them contain multiple birth genes, and their adult body weight is more than 70 kg;

[0114] Small-tailed Han ram selection criteria: rams have big head, thick neck, well-developed spiral horns; well-developed forequarters, wide and deep chest, open ribs, straight back and waist; long, barrel-shaped body; tall, strong limbs Straightforward; short fat tail, tail ...

Embodiment 3

[0144] A hybrid breeding method for a new line of Kenong mutton sheep, comprising the following steps:

[0145] Step 1. Select male and female breeding sheep from the small-tailed Han sheep to form the basic female breeding flock and the male breeding flock of the Small-tailed Han sheep respectively;

[0146] Selection criteria for small-tailed cold ewes: handsome head, pale complexion, thin eyelids and red eyes, only horn bases without obvious horns, large and drooping ears, rough hair, wide waist, large rump, multiple births, and many teats, using molecular markers Assisted selection technology identified that all of them contain multiple birth genes, and their adult body weight is more than 70 kg;

[0147] Small-tailed Han ram selection criteria: rams have big head, thick neck, well-developed spiral horns; well-developed forequarters, wide and deep chest, open ribs, straight back and waist; long, barrel-shaped body; tall, strong limbs Straightforward; short fat tail, tail ...

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Abstract

A method for cultivating a new strain of Kenong mutton sheep, which relates to a method for cultivating a new strain of sheep. Small-tailed Han sheep are used as the female parent and Dorper sheep are used as the male parent to perform crossbreeding to obtain a first-generation hybrid sheep. Growth and development are the main selection indicators. After strict breeding, the selected Duhan first-generation ewes and small-tailed rams are used for crossbreeding to obtain the second-generation hybrids containing 1 / 4 Dorper sheep blood. The first-generation Duhan rams and Small-tailed Han sheep ewes are crossed, and the second generation of hybrids containing 1 / 4 Dorper sheep blood is also obtained. The basic ewes and rams are selected based on multiple births and meat traits, and cross-fixed, that is, A new strain of Kenong mutton sheep has been bred; the new strain of Kenong mutton sheep has slightly shorter legs than the Small-tailed Han sheep, has a large body, fast growth and development, high meat production rate, good meat quality, a reproductive rate of more than 220%, and strong adaptability , suitable for house feeding and development of fat lamb production.

Description

technical field [0001] The invention relates to a method for cultivating a new strain of sheep, in particular to a method for hybridizing and cultivating a new strain of Ke Nong mutton sheep. Background technique [0002] China has a long history of raising sheep and is a big sheep raising country in the world. In recent years, in our country, with the improvement of people's living standards, the change of people's food structure and the higher and higher requirements for healthy food, people consume more and more mutton, thus promoting the rapid development of the mutton sheep industry. develop. Raising sheep to get rich has also become a hot spot in the animal husbandry industry today. But at the same time, when the traditional sheep raising industry is rapidly transforming into the modern sheep raising industry, the problem of low productivity of sheep breed resources has become an important bottleneck restricting the development of the modern sheep raising industry. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02
Inventor 王玉琴赵有璋张学智杨芳韩文静
Owner 洛宁农本畜牧科技开发有限公司
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