Breeding method for improving lean meat percentage of Meishan pigs

A lean meat rate, Meishan pig technology, applied in the field of animal genetics and breeding, can solve problems such as unsuitable market demand

Inactive Publication Date: 2012-10-24
JIANGSU ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as far as the improvement of pig breeds in my country is concerned, it is still not suitable for the development of the national economy and the market demand, and there is still a big gap with the international level of pig breeding.

Method used

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  • Breeding method for improving lean meat percentage of Meishan pigs
  • Breeding method for improving lean meat percentage of Meishan pigs
  • Breeding method for improving lean meat percentage of Meishan pigs

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Embodiment Construction

[0030] 1. Parent selection

[0031] 1) Female parent: The breed is Meishan pig, which is mainly distributed in Jiangsu in the lower reaches of the Yangtze River and in the Taihu Lake Basin at the junction of Zhejiang and Shanghai. The head is large and the forehead is wide, with deep folds on the forehead, and the ears are large and drooping. The whole body is covered with black or blue-gray hair, and the hair is sparse. The skin of the abdomen is mostly purple, and the extremities are white. The body weight of adult boars is 150-200 kg, the weight of adult sows is 150-180 kg, and there are as many as 8-9 pairs of nipples. Sexual maturity is early. When the boars are 4-5 months old, the semen quality has basically reached the level of adult boars. Pigs ovulate more in one estrus period. The average litter size of sows is 12.14 for the first litter, 14.88 for the second litter, and 15.61 for the third litter and above; it is a fat pig breed with a slow growth rate, 25- The dai...

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Abstract

The invention relates to a breeding method for improving the lean meat percentage of Meishan pigs and belongs to the field of animal genetic breeding. A Danish landraces as a male parent and a Meishan pigs as a female parent are hybridized in a three-way mode. Offspring breeding standards comprise the following standards: clothing hair is white, the total number born is larger than 14, the lean meat percentage is larger than 55%, and the daily gain is more than 630g. Suzhong pig generation II bred by the breeding method retains the characteristics of high total number born, good meat quality (intramuscular fat is larger than 3%), coarse feed resistance and easy feed of the Meishan pigs, the daily gain is increased to 634.74 grams from 439 grams and is increased by 44.59%, and the lean meat percentage is increased to 54.49% from 42.8% and is increased by 27.31%. The characteristics of fast growth, high lean meat percentage, and the like of the landraces are also retained, the total number born is increased to 14.24 from 11 and is improved by 29.5%, and the meat quality is also improved obviously.

Description

[0001] 1. Technical field [0002] The invention relates to a breeding method for increasing the lean meat rate of Meishan pigs, belonging to the field of animal genetics and breeding. 2. Background technology [0003] It is the development trend of the world's pig industry to adopt hybridization to produce miscellaneous high-quality pigs and raise lean commercial pigs. Some new breeds (strains) of lean meat have been successfully bred in succession around the world, such as Lacombe, Sierra pigs, Dekappa pigs, etc., with a lean meat rate of over 60%; the world-famous Landrace and Large White pigs, Production performance has been improved. For example, the leg-to-arm ratio and carcass lean meat rate of the new strains of Large White pig No. 12 and No. 16 bred by the British PIC company have increased by 14% and 9.9% respectively, and the lean meat rate of Danish Landrace pig has increased to more than 63%. . However, foreign lean breeds (strains) have disadvantages such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02
Inventor 任守文李碧侠葛云山方晓敏王学敏
Owner JIANGSU ACAD OF AGRI SCI
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