Behnam AHMADIPOUR, Majid KALANTAR, Seyed Mahdi, Zia ur, Farmanullah FARMANULLAH, Mohammad Hassan, LiGuo YANG. Hawthorn (Crataegus oxyacantha) Flavonoid Extract as an Effective Medicinal Plant Derivative to Prevent Pulmonary Hypertension and Heart Failure in Broiler Chickens. Kafkas Univ Vet Fak Derg, 25 (3): 321-328, 2019. DOI: 10.9775/kvfd.2018.20930