Abstract
Glutathione peroxidase-1 (GPX-1) enzyme detoxifies peroxides by reacting with the GSH (reduced glutathione) responsible for the maintenance of the integrity of essential biomolecules. This study was conducted on 100 animals of two Indian draft breeds of cattle (Bos indicus), Nimari, and Malvi. Genomic DNA was isolated from blood samples, and four fragments (80, 71, 78, and 442bp) of the GPX-1 gene were amplified by polymerase chain reaction. PCR-SSCP analysis in 12% PAGE with silver staining revealed polymorphism in three of the fragments (80, 71, and 442bp) in these two cattle breeds. Breed differences for the blood biochemical parameters (serum creatine kinase and lactic acid level) and overall draft ability were studied. The genetic polymorphism identified for the GPX-1 gene in this investigation would help in the identification of alleles related to draft capacity in these animals for future genetic improvement.
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