A SNP molecular marker related to pig teat number trait and application thereof

By using genome-wide association analysis and meta-analysis, specific SNP molecular markers were identified, which solved the problem of unclear genetic basis of the number of pig nipples, and enabled efficient breeding and improved economic benefits.

CN119177294BActive Publication Date: 2025-11-25CHANGSHA RHETT ANIMAL HUSBANDRY CO LTD
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Patent Information

Application Number
CN202411373866.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-11-25
Estimated Expiration
2044-09-29

AI Technical Summary

Technical Problem

In existing technologies, the genetic basis of the number of pig nipples is unclear, which leads to the failure to effectively increase the number of nipples during the breeding process, affecting the survival rate of piglets and production costs.

Method used

Genome-wide association analysis and meta-analysis were used to identify SNP molecular markers located at specific locations in the pig genome. These markers were then used for selective breeding to increase the number of teats in sows.

Benefits of technology

It enables simple, fast, and highly sensitive nipple count detection, improving the reproductive performance and economic value of sows and shortening the breeding cycle.

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Abstract

The application discloses three SNP molecular markers yz_rs329085302, rs320468838 and yz_rs325631013 on chromosome 14 which affect pig teat number, and there are extremely significant differences in left teat number, right teat number and total teat number of pigs with different genotypes of the markers. The three new SNP molecular markers can be used for evaluating pig teat number for non-diagnostic and therapeutic purposes. Compared with the current PCR-RFLP method, the application has the outstanding advantages of simplicity, rapidness, high sensitivity and good specificity.
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