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Hornless Laoshan mountain milk goat production method

A production method and technology of dairy goats, applied in animal husbandry and other fields, can solve problems such as vague understanding of the influence of production traits and inability to be targeted, and achieve the effect of increasing the proportion and improving the breeding efficiency

Inactive Publication Date: 2016-03-09
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the breeding practice of Laoshan dairy goats, because there is no research result on the genetic model of the horn shape of Laoshan dairy goats, people have a vague understanding of the genetic model of the horn shape of Laoshan dairy goats and its impact on production traits, making it difficult to carry out Laoshan dairy goats. In the process of selection and mating of dairy goats, it cannot be targeted
For example, when using traditional phenotyping methods to eliminate hornless sheep, it is likely that Pp heterozygous sheep will also be eliminated

Method used

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  • Hornless Laoshan mountain milk goat production method
  • Hornless Laoshan mountain milk goat production method
  • Hornless Laoshan mountain milk goat production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Identification of Horn Shape Genetic Model of Laoshan Dairy Goat

[0025] 1 Matching according to the presence or absence of Laoshan milk goat horns:

[0026] 1.1 Matching mode

[0027] Table 1 Selection mode of Laoshan dairy goats

[0028]

[0029] ×: means mating; ♂: means male; ♀: means female.

[0030] The selected individuals are all capable of breeding over 3 years old.

[0031] 2 Matching results and analysis

[0032] 2.1 Matching results of matching type 1 (matching results of male with horns (♂) and female with horns (♀)):

[0033] 35 mating pairs were recorded, a total of 177 lambs were born in 3 consecutive generations, and all lambs showed horns. According to the growth performance of the horns of the selected progeny, the genotypes of Laoshan dairy goat rams and ewes with horns should be recessive homozygotes, pp.

[0034] Table 1 Performance of lambing horns for male with horns (♂) and female with horns (♀)

[0035]

[0036] The inhe...

Embodiment 2

[0091] Production of Example 2 Hornless Laoshan Dairy Goat

[0092] The present invention utilizes the principles and methods of animal genetics to select and match according to the different phenotypes of Laoshan dairy goats and ewes with horns and without horns, and carry out genetic analysis on the phenotype and trait ratio of the offspring born in different matching methods to identify Laoshan goats. Inheritance patterns of dairy goat horns. Based on this, the matching model for producing hornless Laoshan dairy goats was worked out.

[0093] first step:

[0094] Method: use horned Laoshan dairy goat rams and hornless Laoshan dairy goat ewes to mate, no matter whether male goats or female goats, there will be individuals with horns and no horns in the offspring, and the male goats without horns , The female goat is selected.

[0095] The matching modes are as follows:

[0096]

[0097] Step two:

[0098] Use the hornless male goat obtained in the first step to mate ...

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Abstract

The invention discloses a hornless Laoshan mountain milk goat production method. Hornless male goats and female goats are selected by mating Laoshan mountain male milk goats with horns and hornless Laoshan mountain female milk goats, the obtained hornless male goats and female goats with horns are mated, male goats without horns and female goats without horns are selected, mating of the hornless male goats and the female goats with the horns is repeated, and hornless female goats are produced. The method can effectively increase the proportion of the hornless goats in a group and can remarkably improve breeding benefits and culture benefits.

Description

technical field [0001] The invention belongs to the technical field of animal production, and in particular relates to a method for producing hornless Laoshan dairy goats. Background technique [0002] Goats have two kinds of horns and horns. The lack of horns is determined by a dominant gene P on an autosome, and its dominant effect is to prevent the development of horns. Horns are controlled by the recessive gene p. However, in recent years, many studies and production practices have pointed out that the dominant gene P controlling the inheritance of goat horns is closely related to the sex ratio of its offspring, especially the sex deformity, making a common phenomenon in goats that is rare in other livestock - Intersex sheep and sex ratio imbalance. [0003] The autosomal gene P also has a recessive masculinization effect, that is, it is combined with sexual abnormalities. There are two types of sexual deformities caused by homozygous gene P, one is hypermale, whose g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 李桢潘庆杰刘锦梅
Owner QINGDAO AGRI UNIV