Thus, we hypothesized expression differences of endothelin-1, TGF-β1, TGF-β2, and TGF-β3, of their receptors TβRI, TβRII, and of their pseudoreceptor BAMBI in lung tissue of broilers with ascites, with right cardiac failure but without ascites and in healthy broilers. The gene discussed is TGFBR1; the disease is Ascites.