Behnam AHMADIPOUR, Majid KALANTAR, Seyed Mahdi HOSSEINI, Zia ur REHMAN, Farmanullah FARMANULLAH, Mohammad Hassan KALANTAR, 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