Screening of BCL-2 associated X protein gene polymorphism associated with scrotal hernia in domesticated swine using polymerase chain reaction-restriction fragment length polymorphism

  • Manalaysay, Jessica G. (Philippine Carabao Center, Science City of Munoz) ;
  • Antonio, Nathaniel D. (College of Science, University of the Philippines Baguio) ;
  • Apilado, Ralph Lorenz R. (College of Science, University of the Philippines Baguio) ;
  • Bambico, Joseph F. (College of Science, University of the Philippines Baguio) ;
  • Mingala, Claro N. (Philippine Carabao Center, Science City of Munoz)
  • 투고 : 2016.01.07
  • 심사 : 2016.04.10
  • 발행 : 2017.02.01


Objective: This study was conducted to screen scrotal hernia in domesticated swine from selected breeders in the Philippines. This defect is associated with a cytosine to thymine mutation in the BCL-2 associated X protein (BAX) gene of swine. Methods: Genetic screening was done by DNA extraction followed by amplification and digestion using polymerase chain reaction-restriction fragment length polymorphism, amplifying the 416 bp region of the BAX gene that was subjected to digestion using the Ear I enzyme. Sequencing was also conducted to validate the results. Results: Results revealed that out of 538 samples tested, 411 (76.4%) of the samples were found to be normal whereas the remaining were carriers of the mutation in which 80 (14.9%) were heterozygous mutants and 47 (8.7%) were homozygous mutants. Pietrain breed was found to have the highest incidence. Conclusion: Having a scrotal hernia eliminates the chances of using the boar as a breeder stock because the following generations arising from it would most likely exhibit herniation. It is therefore advised to establish a genetic screening method for Scrotal Hernia in the Philippines to eliminate the negative gene from the herd.


BAX Gene;Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP);Screening;Scrotal Hernia;Swine


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