Managing myostatin mutations (double muscling) in Northern Australian tropically adapted beef breeds

The myostatin gene influences muscle production in beef and other species. Many mutation variants have been identified, resulting in the inactivation of the myostatin gene and the appearance of ‘double-muscled’ cattle. Limited studies have considered myostatin mutations in tropically adapted beef breeds. This study aimed to estimate the allele frequencies of myostatin mutations in Australian Brahman, Droughtmaster and Santa Gertrudis breeds.