Method for breeding new species of lean meat type pigs

A lean meat type, new breed technology, applied in animal husbandry and other directions, can solve the problems of economic loss, taste tenderness, flavor, chewing performance, etc., and achieve the effect of good water retention, shortened breeding cycle, and good tenderness.

Inactive Publication Date: 2010-06-30
SHANGHAI ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, the reality is that the current breeding program for breeding pigs ignores the internal mechanism of the deterioration of meat quality. The meat quality of pork has also changed. Pork is no longer bright red, and its tenderness, flavor, and chewing properties are not as good as before.
Moreover, the appearance of this kind of poor quality meat also caused huge economic losses.

Method used

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  • Method for breeding new species of lean meat type pigs
  • Method for breeding new species of lean meat type pigs
  • Method for breeding new species of lean meat type pigs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Hybrid first-generation sow

[0023] The Erhualian pig with the highest litter size among the famous local pig breeds in Jiangsu Province, Taihu pig, was selected as the female parent, 25 excellent individuals were selected, and the British York pig was selected as the male parent, and 5 excellent individuals were selected to cross and produce piglets. The young piglets are cultured and selected. The first selection is to stay at 4 weeks of weaning. Choose a sow with a white coat, a weight of not less than 4kg, and more than 7 pairs of nipples, and a strong and well-proportioned sow; the second selection Stay at the age of 4 months to eliminate sows with poor physical fitness, dark spots and slow growth; at 6 months of age, the third selection will be carried out based on daily gain, feed-to-meat ratio and live B-ultrasonic test results. Keep, choose daily weight gain above 550g, feed-to-meat ratio not higher than 3:1, 100kg living body back fat below 22mm, eye m...

Embodiment 2

[0025] Example 2 Long×(big·two) hybrid pigs and formation of basic breeding groups

[0026] The selected hybrid first-generation sows were used as the female parent core group, and 12 Danish Landrace boars of 5 pedigrees were used as the male parent. The second cross was carried out to produce long × (big·two) hybrid piglets. Cultivate piglets and select them. For the first selection, according to the results of molecular marker detection, sows choose Hal genes as NN and Nn types, ESR genes as BB and AB types; boars choose Hal genes as NN type, ESR The genes are BB type and AB type. The second selection was carried out at the 28-day-old weaning. The pigs that were selected were consistent with the following: the weight was greater than 4kg, the body shape was good, the development was good, and the whole body was white. The third selection was carried out at 4 months of age. Individuals who were stunted, weighed less than 40kg, and had miscellaneous hairs and variegation were el...

Embodiment 3

[0028] Example 3 Blocked population breeding and multi-generation breeding

[0029] Closed breeding of the basic group and selection of multiple generations. Cultivation of Shennong No. 1 boars and sows, breeding and littering according to the principle of avoiding mating of full sibs and half sibs, cultivating and selecting piglets. In the first selection, according to the results of molecular marker detection, sows choose Hal genes as NN and Nn, ESR genes as BB and AB; boars choose Hal genes as NN and ESR genes as BB and AB of. The second selection was carried out at the 28-day-old weaning. The pigs that were selected were consistent with the following: the weight was greater than 4kg, the body shape was good, the development was good, and the whole body was white. The third selection was carried out at 4 months of age. Individuals who were stunted, weighed less than 40kg, and had miscellaneous hairs and variegation were eliminated. The last selection was made at 6 months of...

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Abstract

The invention discloses a method for breeding a new species of lean meat type pigs-Shennong No. 1, which includes: A) the erhualian sow as female parent and the yorkshire boar as male parent are in cross breeding to obtain the yorkshire*erhualian cross bred sow; then, cross breeding female parent is in cross breeding with the danish landrace boar to obtain danish*( yorkshire*erhualian) ternary hybrid pigs; B) a fundamental selective breeding group of danish*( yorkshire*erhualian) ternary hybrid pig is formed and selected as zero-generation of Shennong No. 1; C) the boars and sows are mated to obtain piglets, good piglets are selected gradually for seed reservation; D) the good piglets are continuously cultivated until sexual maturity, the outstanding individual female and male pig are reserved as the next generation of swine respectively according to reproductive performance and meat quality as well as carcass performance and growth performance; E) the step C) and D) are repeatedly operated for 4-15 times. The main selective breeding indexes of the Shennong No. 1 pig are based on the reproductive performance and meat quality, the Shennong No. 1 pigs have the advantages of good meat quality, which is manifested in red meat color, good water holding capacity, high intramuscular fat, and good tenderness and the like. Referring to the reproductive performance, the number of the first-born Shennong No. 1 sow is more than ten.

Description

Technical field [0001] The invention belongs to the technical field of animal husbandry selection and breeding, in particular to a breeding method for high-quality lean-type breeding pigs. Background technique [0002] Pork is the most important source of animal protein for the people. According to statistics, more than 70% of the animal protein consumed in my country is pork and its products. Since the 1970s, people's nutritional concepts and dietary structure have changed, coupled with the improvement of living standards, people's demand for pork has changed from quantity to quality, and the demand for lean meat has increased significantly. Breeding programs for breeding pigs around the world have also turned to improve the meat production performance of commercial pigs. [0003] However, the reality is that the current breeding program for breeding pigs ignores the internal mechanism of poor meat quality. In addition to high-density feeding and management, the meat quality char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/02
Inventor 谈永松王林云胡志刚
Owner SHANGHAI ACAD OF AGRI SCI
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