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Culture method of central Shandong mutton sheep polyembryony strains

A cultivation method and strain technology, which are applied in the field of cultivation of Luzhong mutton sheep multiple litter strains, can solve problems such as difficulty in giving full play to breed characteristics, and achieve the effects of increasing weaning weight and survival rate, increasing reproduction rate, and improving reproduction rate and production level.

Inactive Publication Date: 2018-12-11
LAIWU YINGTAI ORGANIC AGRI TECH DEV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, strengthening feeding management is also an important technical measure to consolidate and improve the breeding results, especially the newborn lambs grow rapidly after weaning to six months, and it is also a period of frequent occurrence of diseases, which requires improved nutrition as a guarantee , otherwise it will be difficult to give full play to the characteristics of these varieties

Method used

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  • Culture method of central Shandong mutton sheep polyembryony strains
  • Culture method of central Shandong mutton sheep polyembryony strains
  • Culture method of central Shandong mutton sheep polyembryony strains

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Effect test

Embodiment 1

[0066] Embodiment 1: the cultivation of Luzhong mutton sheep multiple birth strain

[0067] (1) FecB gene detection was performed on Dorper sheep and Hu sheep, and the FecB gene detection was carried out in accordance with the "NY / T1672-2008 Technical Regulations for FecB Molecular Detection of Sheep Multifetal Gene"; Dorper sheep carrying the FecB gene were selected as the male parent, and the FecB gene was carried Genetic Hu sheep are used as the female parent to establish a breeding group. According to the principle of equality and non-kinship, a breeding plan is formulated. The male parent includes 10 or more different bloodlines.

[0068] (2) Crossbreed Dorper sheep rams and Hu sheep ewes in the breeding group, and record the hybrid generation as Duhu F 1 generation.

[0069] (3) From Du Lakes F 1 Select excellent ewes in the generation and cross with Dorper sheep rams to get Duhu F 2 generation;

[0070] From Du Lake F 1 The criteria for selecting excellent ewes in ...

Embodiment 2

[0093] Embodiment 2: the performance measurement of Luzhong mutton sheep multi-fetal strain of the present invention

[0094] 1. Determination of reproductive performance

[0095] 1. Breeding season

[0096]According to the analysis of the estrus and lambing months of 1048 ewes in the original breed farm of Luzhong mutton sheep, the mating and breeding of Luzhong mutton ewes is not restricted by seasons, and they can breed and lambing throughout the year. The lambing months range from 3 to May and September to November are the most, and the number of lambs born in spring and autumn accounts for more than 70% of the whole year.

[0097] 2. Lambing rate

[0098] The lambing rate of first-born ewes in 2016 was 159.05% in the 8-10-month-old estrus breeding of Luzhong mutton sheep. After the implementation of simultaneous estrus and breeding selection and matching technology, the lambing rate of first-born ewes in 2017 reached 172.17%. According to statistics, the 2-year average...

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Abstract

The invention discloses a culture method of central Shandong mutton sheep polyembryony strains. The culture method includes the steps: (1) selecting dorper sheep carrying FecB genes as a male parent,and selecting Hu sheep carrying FecB genes as a female parent to form a breeding group; (2) hybridizing the dorper male sheep and the Hu female sheep to obtain a dorper-Hu F1 generation; (3) selectingexcellent female sheep from the dorper-Hu F1 generation, and hybridizing the excellent female sheep with the dorper male sheep to obtain a dorper-Hu F2 generation; (4) selecting excellent female sheep from the dorper-Hu F2 generation, and hybridizing the excellent female sheep with the dorper male sheep to obtain a dorper-Hu F3 generation; (5) selecting excellent male sheep from the dorper-Hu F2generation, and crossing and fixing the excellent male sheep and excellent female sheep in the dorper-Hu F3 generation to obtain a crossing fixed group; (6) locking, breeding and propagating the crossing fixed group to finally obtain the central Shandong mutton sheep polyembryony strains. The Hu sheep serving as a local variety and the dorper sheep serving as an introduced mutton sheep variety arehybridized to culture the mutton sheep polyembryony strains which are high in reproductive rate, high in growth speed, excellent in meat quality and adaptable to environment climatic conditions in Chinese central Shandong regions.

Description

technical field [0001] The invention relates to the technical field of livestock breeding, in particular to a method for cultivating a multi-fetal strain of Luzhong mutton sheep. Background technique [0002] my country is a big sheep raising country, and the number of sheep and sheep products ranks among the top in the world. In recent years, with the rapid development of the national economy and the continuous improvement of people's living standards, people's consumption of mutton has continued to increase. The development of large-scale sheep raising is an inevitable trend in the development of the modern mutton sheep industry. [0003] The breed of mutton sheep largely determines the growth rate, feed conversion rate, meat yield and meat quality of mutton sheep. Compared with other high-quality mutton sheep in the world, the existing mutton sheep breeds in my country are generally small in size, slow in growth and low in meat production performance. In order to quickl...

Claims

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Application Information

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IPC IPC(8): A01K67/027A23K50/10A23K50/60A23K20/195A23K10/30A23K10/28A23K10/37A23K10/33A23K20/20A23K20/142A23K20/158A23K20/163A23K20/28
CPCA01K67/027A23K10/28A23K10/30A23K10/33A23K10/37A23K20/142A23K20/158A23K20/163A23K20/195A23K20/20A23K20/28A23K20/30A23K50/10A23K50/60Y02P60/87
Inventor 田越王金文魏书东潘林香孟宪锋李强刘姗姗魏海峰吕政印张录文方震王勇亓保华杨振燕贾树强罗维平陶圣杰王腾姚建美
Owner LAIWU YINGTAI ORGANIC AGRI TECH DEV
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