For example, our data showed that the expression of SGCD was significantly downregulated in the hearts of SG (decreased by 89%) and DRW (decreased by 66%) chickens, but upregulated in TB (increased by 230%) chickens under hypoxia, which was consistent with the report that SGCD might be involved in chicken cardiomyopathy and muscular dystrophy. This evidence concerns the gene SGCD and muscular dystrophy.