Molecular breeding method aiming at body size character and application of molecular breeding method

A trait and molecular technology, applied in the field of livestock breeding, can solve problems such as reducing the genetic progress of growth traits, and achieve the effect of promoting genetic improvement and improving production performance

Active Publication Date: 2022-04-12
SHENZHEN JINXINNONG FEED
23 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Therefore, independent selection for body size traits will reduce the genetic pro...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention relates to the technical field of livestock breeding, in particular to a molecular breeding method aiming at body size characters and application of the molecular breeding method. The molecular breeding method comprises the following steps: evaluating the breeding capability of pigs by simultaneously adopting growth shapes, breeding traits and body size traits; the body size characters comprise the body length and the body height; the growth traits comprise day age and backfat thickness, and the reproduction traits comprise total litter size. According to the present invention, the body size type character is incorporated into the existing breeding pig genome selection molecular breeding scheme, the genetic evaluation results of the body size type character and the growth and reproduction character are integrated, the breeding ability of the pig is evaluated, and the breeding method is further applied to breeding of the breeding pig so as to obtain the breeding method for evaluating the breeding ability of the pig; the method is of great significance to breeding of large boars in the future.

Application Domain

Technology Topic

Molecular breedingLivestock +9

Image

  • Molecular breeding method aiming at body size character and application of molecular breeding method
  • Molecular breeding method aiming at body size character and application of molecular breeding method
  • Molecular breeding method aiming at body size character and application of molecular breeding method

Examples

  • Experimental program(2)

Example Embodiment

[0044] Example 1
[0045] In this example, the growth performance of the large white pig is measured in the pig field, while the size of the pigs is measured, and the total number of births of childbirth is collected, and the number of people who produce the number and other reproduction data. After collecting data, correct the age, back to thick, body length, and body height, calculate 100kg body weight, up to 100kg body weight, total number of bodies, up to 100kg body weight and up to 100kg body weight 5 Breeding value of traits. According to the breeding objectives of the breeding field and the focus of breeding, the character should be weighted according to certain weights, and finally obtain a comprehensive selection index. Finally, the seed pig selection and optional breeding work is performed according to the comprehensive selection index. The specific method is as follows:
[0046] (1) Determination of large white pigs to the measurement standards, while determining the size of the raw pig, including the body length and the body. Collect the total number of births of childbirth sows, and the number of people, etc.
[0047] Whether the judgment of the determination standard is: whether the actual weight of the pig is in the range of 85 to 130 kg.
[0048] (2) Refer to the "National Pig Geosity Assessment Program (Trial)" (Pastis (species (species) [1000] 60) documents, the age and back thickening of the performance measurement was corrected.
[0049] The specific correction formula is as follows:
[0050] 100KG weight-age correction formula:
[0051]
[0052] The A1 value of the formula corresponds to the boar, and the sow is 50.775 and 46.415, respectively.
[0053] 100kg body weight back thick correction formula:
[0054]
[0055] The B1 value of the formula corresponds to the boar, the sow is -7.7277 and -9.440, respectively.
[0056] (3) Currently, there is currently no standard scale correction formula, and the present invention develops a correction formula of large white pig boar and sow body length and high-stroke of large white pig boar and sow, according to the correction formulated in accordance with the present invention. The formula has to reach 100kg body weight, reaching 100kg body weight, as shown below, the correction coefficients involved are as shown in the following table:
[0057] Table 1 big white pig size correction formula coefficient
[0058]
[0059] The correction formula is as follows:
[0060] 100kg body weight long correction formula:
[0061]
[0062] 100kg body weight high correction formula:
[0063]
[0064] (4) Calculate the species of each sex
[0065] For the 2 growth traits of 100kg body weight and up to 100kg body weight, a bile model is used for genetic assessment:
[0066] AGE / BF = HYSS + LITTER + Animal + Error
[0067] Among them, AGE is a 100kg body weight; BF is a 100kg body weight; HYSS is a fixed effect of pigs, annual, seasonal, and gender composition when the individual is determined; Litter is a random in the nest when the animal is born. Effect; Animal is an additional genetic effect of animal individual, namely breeding value, H is the intact relationship matrix of integrated and genomic information; Error is a random error, I is a unit matrix.
[0068] The genetic assessment analysis of the total number of children uses the repeated model, the model is defined as follows:
[0069] TNB = HYS + PARITY + Perm + Animal + Error
[0070] Among them, TNB is the total number of total production; HYS is a fixed effect of pigs, annual and season in the sow; Parity is the fetal fixation effect of sows; Perm is a total of multiple fetuses affecting the same mother pig. The random permanent environment effect of the number of products; the definition of the Animal and Error variables.
[0071] Body length and high calculation use a bile animal model:
[0072] BL / BL = HYSS + LITTER + Animal + Error
[0073] Among them, BL is 100kg body weight; BH is a high weight of 100kg body weight; Hyss, Litter, Animal and Error variables are defined.
[0074] (5) Calculate the individual comprehensive index according to each character EBV
[0075] Weighted calculation integrated selection index for individual characters, up to 100kg body weight, up to 100kg body weight, body back, total number, body length, high weight of 30%, 10%, 30%, 20%, 10 %.
[0076] The integrated index calculation formula is specifically as follows:
[0077]
[0078]
[0079] Among them, EBV AGE Estimated breeding value of 100kg body weight, EBV BF For the estimated breeding value of 100kg body weight, EBV TNB Estimated breeding value for total number of products, EBV BL Estimate breeding value of 100kg body weight, EBV BH For the high estimated breeding value of 100kg body weight, σ A(AGE) For the biting value of the biting value of 100kg body weight, σ A(BF) 100kg body weight back thick breeding value standard, σ A(TNB) Breeding value standard, σ A(BL) Breeding value of 100kg body weight, σ A(BH) More than 100kg body weight, high breeding value, σ (I) It is the standard deviation of i.
[0080] (6) breeding application of comprehensive index
[0081] According to the calculated integrated selection index, the selection and selection and other breeding work of the pigs in the large white pig.

Example Embodiment

[0082] Experimental Example 1
[0083] The effects of pork were subjected to the selection and option of the signs of the stroke to the integrated selection index to evaluate the effects of the method. This experimental case is conducted based on a large white pig in a core breeding ground in Fujian.
[0084] The following table shows the ten-head individuals that are excellent in the target groups, which are excellent in selection of pigmentation performance (capabilities), wherein index 1 (index1) is a comprehensive selection index that does not include a size, index2 (index2) is a body foot. Comprehensive selection index of traits. Retention and options can be obtained in accordance with the comprehensive selection index including the size of the size.
[0085] It can be seen that a comprehensive selection index of the growing performance is more accurate to obtain a well-measured individual, which is more accurate, and more accurate, a comprehensive selection index that considers a size of the slogan. As can be seen from the example, the new integrated index (index2) having an ideal large type pig is higher than the original index (INDEX1) (Table 2), more accurate reflection of the comprehensive performance of the pigs, the signs of pigs; it is not good When the new integrated index value is significantly lower than the original index (Table 3). Therefore, new breeding techniques accelerate the breeding of large-scale high-profile pigs, and also taking into account the growth rate, lean meat and reproductive performance.
[0086] Table 2: Composite of pigs (representative excellent large breeders)
[0087]
[0088]
[0089] Table 3: Composite selection index of breeding pigs (representative body owes ideal pigs)
[0090]
[0091] Remarks: Index1 is a comprehensive index that is not considered the correction body length and the correction height, Index2 is a comprehensive index that is not considered the correct body length and the correction.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Corn salt-tolerant gene and molecular marker and application thereof

InactiveCN108795951APromote genetic improvementMicrobiological testing/measurementPlant peptidesSequence analysisGenetic resources
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES

Classification and recommendation of technical efficacy words

Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products