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Among the numerous transmissible spongiform encephalopathies (TSEs), bovine spongiform encephalopathy (BSE) is the most well-known TSEs. It is a potential Creutzfeldt–Jakob (CJD) disease mutation that can be transferred through cattle to humans. In several animals, the prion protein gene ( PRNP ) is recognized to take active part in TSE vulnerability or tolerance. Previous studies have found indels polymorphism in  PRNP  gene promoter and intron1 region linked to BSE vulnerability. It’s linked with 23 bp indels polymorphism in putative promoter and 12 bp indel in intron 1 of the  PRNP  gene. The aim of this study was to compare the allele, genotype and haplotype frequencies of  PRNP  indel polymorphisms in Zhongdian Yak ( Bos grunniens ) (YK), Zhongdian Yellow cattle ( Bos taurus ) (YC) and Zhongdian Yakow ( Bos primigenius taurus × Bos grunniens ) (PK) with worldwide reported healthy or affected BSE cattle, in order to assess their potential resistance to BSE. A comparison of Chinese bovine populations with healthy and BSE-affected German and Swiss cattle from globally was conducted, and result indicating significant difference ( p  &lt; .001) between healthy and affected cattle. Additionally, as compared to prior studies with Chinese bovine population, the significant results were found. In this study, the allelic frequency D23 finding high deletion in all analyzed Chinese bovine species, and haplotype D12–D23 exhibited a less significant inclination toward susceptibility to BSE.

PRNP gene polymorphism frequencies for comparing possible vulnerability to BSE in Chinese bovine population