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Objective: Bovine Leukocyte Adhesion Deficiency (BLAD) is a genetic disorder in Holstein-Friesian (HF) cattle that have a significant economic impact on dairy cattle breeding. Mutation c.383A>G in Cluster of Differentiation Molecule 18 (CD18) gene was known as related to BLAD. This study aimed to detect the CD18 gene mutation that causes BLAD of HF cattle in the West Java Province. Methods: The genomic DNA was extracted from 88 blood samples of HF cattle from Cibungbulang-Bogor (n=34), Ciampea-Bogor (n=31), and Sukabumi (n=23) by the GB300 DNA extraction kit, Geneaid TM . The CD18 gene mutation was detected by PCR-RFLP analysis using the Taq I restriction endonuclease. Results: All samples in this study produced two fragments DNA, i.e., 359 bp and 260 bp with the monomorphic homozygote genotype (BB). HF cattle with BB genotype indicated as normal cattle and did not carry BLAD. Conclusions: All samples in the three populations of West Java were free of BLAD genetic disorder. Identification of BLAD on HF cattle in other places, including bulls in the Center of Semen Production in Indonesia was needed to prevent this genetic disorder.

Detection of the CD18 gene mutation as a marker of BLAD genetic disorder of Holstein-Friesian cattle in West Java