Method for cultivating high-quality specialized strain through Tibetan pigs

A breed of Tibetan pig technology, applied in animal husbandry and other fields, can solve the problems of Tibetan pigs such as small size, few litters, slow growth, etc., and achieve the effect of good body and body combination and excellent meat quality

Pending Publication Date: 2018-03-23
SICHUAN ANIMAL SCI ACAD
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Problems solved by technology

However, Tibetan pigs have disadvantages such

Method used

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Embodiment 1

[0031] A method for cultivating high-quality specialized strains using Tibetan pigs, the steps comprising:

[0032] (1) Use 10 excellent Duroc boars with different bloodlines to crossbreed with excellent Tibetan sows, and each Duroc boar is matched with 3-4 Tibetan sows, and the offspring are selected to retain pure black sows with individual body shape and appearance 1. 50 individuals with good production performance and 10 Duroc boars form a breeding core group as the first generation of progressive hybrids;

[0033] (2) Use 10 Duroc boars from the core group to breed sows from the core group of the first generation of progressive hybrids. Each Duroc boar is matched with 3-4 sows of the first generation of progressive hybrids. The breeding is all done manually Insemination and avoid inbreeding, mating twice during the estrus period, select 70 offspring pure black sows with good body appearance, good production performance and 10 Duroc boars to form a breeding core group, as ...

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Abstract

The invention discloses a method for cultivating a high-quality specialized strain through Tibetan pigs. Duroc and the Tibetan sows are utilized for hybridization to breed a grading first-filial generation, Duroc boars in a core group and breeding core group sows of the grading first-filial generation are used for hybridization to serve as a grading second-filial generation, the Duro boars in thecore group and the breeding core group sows of the grading second-filial generation are used for hybridization to serve as a grading third-filial generation, the Duro boars in the core group and the breeding core group sows of the grading third-filial generation are used for hybridization to serve as a grading fourth-filial generation, grading fourth-filial generation boars and sows are subjectedto athwart crossing to serve as a zero generation, and athwart crossing is fixed; then generation breeding is carried out, and the high-quality specialized strain is obtained through breeding. The bred specialized strain has the straight back and belly, strong four limbs and the solid limbs and hoofs, achieves good body combination, and is developed in leg and buttock, good in fecundity, good in fattening performance, high in feed conversion rate, high in carcass performance, high in meat quality and free of PSE or DFD meat, the longissimus dorsi pH ranges from 6.0 to 6.5, and the rear leg proportion is larger than 35%.

Description

technical field [0001] The invention relates to a method for cultivating high-quality pig specialized strains by using Tibetan pigs, belonging to the field of animal genetics, breeding and reproduction. Background technique [0002] A lot of practice has proved that: my country's local pig breeds have strong stress resistance, early maturity and easy fattening, and are especially famous for their excellent quality such as tender and delicious meat. But there are also disadvantages, that is, slow growth and low lean meat rate. For example, the results of the growth and development of Tibetan pigs in my country show that the daily gain is 200 grams, the lean meat rate is 42.65%, and the feed conversion rate is 4.4. It is not suitable for the needs of my country's pig production development. [0003] In today's pig production in the world, the breeds used are mainly Landrace pigs, Large White pigs, Duroc pigs, Hampshire pigs, Pietrain pigs and Berkshire pigs, which have fast ...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 吕学斌龚建军杨雪梅陈晓晖曾凯杨跃奎梁艳顾以韧陶璇应三成钟志君雷云峰
Owner SICHUAN ANIMAL SCI ACAD
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