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Asian-Australas J Anim Sci > Volume 15(7); 2002 > Article
Asian-Australasian Journal of Animal Sciences 2002;15(7): 938-943.
DOI: https://doi.org/10.5713/ajas.2002.938    Published online July 30, 2012.
Genetic Polymorphisms of BTN and STAT5a Genes in Korean Proven and Young Bulls
K. H. Lee, K. W. Chang, K. H. Cho, K. J. Lee*
Department of Dairy Science, College of Animal Husbandry, Kon-Kuk University Hwayang-dong 1, Gwangjin-gu, Seoul, Korea
Correspondence:  K. J. Lee, Tel: +82-2-450-3687, Fax: +82-2-455-5305, Email: kjlee@konkuk.ac.kr
Received: 25 January 2002   • Accepted: 12 April 2002
Abstract
This study was performed to detect polymorphisms of the two candidate genes, bovine BTN (Butyrophilin) and STAT5a (Signal Transducers and Activators of Transcription) gene using 98 Holstein bulls' frozen semen, and to offer the basic information for QTL (Quantitative Trait Loci) analysis. Each BTN PCR product was digested with endonuclease restriction enzyme. The digested fragments of four BTN PCR products were observed as follows: 316, 280, and 162 bp in BTN1, 568, 305 and 263 bp in BTN2, 576, 332, and 244 bp in BTN3, and 573, 291, and 282 bp in BTN4, respectively. The gene frequencies of A and B allele in four BTN loci were as follows: 0.8980 and 0.1020 in BTN1, 0.5510 and 0.4490 in BTN2, 0.8163 and 0.1837 in BTN3, and 0.8875 and 0.1122 in BTN4, respectively. And three genotypes (homotypel, heterotype, and homotype2) for STAT5a were observed by SSCP (single stranded conformational polymorphism) method and the genotype frequencies are 78.57%, 19.39%, and 2.04%, respectively. The PIC (Polymorphism Information Content) value and heterozygosity of four BTN loci were as follows: 0.1695 and 0.1870 in BTN1, 0.3713 and 0.4927 in BTN2, 0.2549 and 0.2999 in BTN3, and 0.1794 and 0.1992 in BTN4, respectively. Comparing with the reported data, PIC value of BTN2 might have the possibility to be useful marker. Other BTN loci indicated skewed allele distribution.
Keywords: Butyrophilin, Signal Transducers and Activators of Transcription, Quantitative Trait Loci, Polymorphism Information Content, Heterozygosity


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