Figure 1: Telmisartan protects broiler chickens from pulmonary hypertension induced by low ambient temperature. Broiler chickens were randomly divided into 3 groups (n=8): Control group, Low temperature group and Telmisartan group. Chickens in Control group were raised in normal temperature; Chickens in Low temperature group and Telmisartan group were exposed to low temperature from 14 days of age; Chickens in Telmisartan group were gavaged with Telmisartan 5 mg/ kg once daily until 45 days of age. Pulmonary Arterial Systolic Blood Pressure (PASP) was measured with Right Catheterization Method using PCLAB-UE biomedical signal acquisition and processing system. Data are presented as the mean ± SD (n=8 in each group).**P<0.01 compared with Control group and Telmisartan group(one-way ANOVA).