New Tibetan pig strain cultivation method

Abstract

The invention relates to the field of animal breeding, and particularly discloses a new Tibetan pig strain cultivation method. A specific Tibetan pig selection indicator is formulated according to the characteristics of the Tibetan pig variety, and two selection index calculation equations are formulated according to the breeding target. Tibetan pigs with different consanguinities are taken as the basic group zero generation, and the first-generation pig group is selected and reserved according to the 25 kg weight day age breeding value, the backfat thickness breeding value and the litter size breeding value. Selection is conducted in two directions starting from the second-generation pig group, continuous breeding of three to four generations is conducted according to the formulated paternal line selection index and maternal line selection index, and then the new Tibetan pig strain I (fast growth strain) and II (high prolificacy strain) are obtained. High-quality and high-yield new Tibetan pig strain commercial pigs can be produced with the strain II serving as the female parent and the strain I serving as the male parent. New strain pigs have the advantages of being high in growth speed, large in litter size, high in meat quality, high in cold resistance and stress resistance and the like.

Description

technical field [0001] The invention relates to the field of animal breeding, in particular to a breeding method for a new breed of Tibetan pig. Background technique [0002] Tibetan pig is a plateau-type local pig breed unique to Tibet. It is mainly distributed in the high mountains and deep valleys of the middle reaches of the Yarlung Zangbo River. Zhongyi Township in Jiali County has the most. Tibetan pig is one of the 19 pig breeds in the species conservation list determined by the state in 2001. It is a unique breed resource in Tibet and belongs to a relatively primitive lean-meat pig breed raised by grazing. Tibetan pigs mainly feed on the stems, leaves and fruits of wild plants on the plateau. They have thin skin, less fat, more lean meat, high protein, tender meat, delicious taste, and rich in more than ten kinds of essential amino acids. The reputation of "Treasure of the Plateau". As early as the Ming Dynasty, He Yudu's "Yi Bu Tan Zi" praised wild Tibetan pigs a...

AI Technical Summary

Problems solved by technology

The growth rate of Tibetan pigs is slow (generally 25kg body weight takes 1 to 1.5 years), and the reproductive performance is low (primary production of 3-4 heads, long-term production of 5-6 heads), this low production performance seriously restricts animal husbandry in the Tibet Autonomous Region The development of the industry cannot adapt to the pace of today's social development and international market competition

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