Peroxisome proliferator-activated receptors （ PPARs）, the ligand-depended nuclear transcription fac- tors, are members of the nuclear receptor superfamily. Since PPARs had been founded in 1990, the PPARs genes＇ structure and polyrnorphism, expression patterns in tissues, influence factors of expression, signal transduction pathway and functions like regulating lipid metabolism in the rodent and human body were studied widely and deeply by researchers. In recent years, the expression patterns and functions of PPARs genes in livestock, poultry...
