Determination of allele frequency of factor XI deficiency (FXID) in holstein bulls raised in two different enterprise in Turkey [Türkiye'deki iki farkli{dotless} işletmede yetiştirilen holştayn boǧalarda faktör XI yetmezliǧi (FXID) allel frekansi{dotless}ni{dotless}n belirlenmesi]

Factor xi deficiency (fxid) is an autosomal recessive disease. both heterozygotes and homozygote individuals for fxid can be seen problems such as mastitis,metritis,lower calving and repeat breeding. the aim of this study was to determinate the frequency of allele leading to the hereditary factor xi deficiency disease (fxid) in the holstein bulls. in this study,59 holstein bulls were used. for this purpose,the dna samples of the eveluated bulls were obtained by phenol-chloroform isolation method. these dnas were amplified by pcr. end of pcr,the genetic conditions of analyzed holstein bulls about fxid were determined by 2% agarose gel electrophoresis. in the evaluated holstein bulls,one of the bulls was detected as a fxid carrier. it was determined that fxid prevalence was 1.7% in the investigated holstein bulls.