The Effects of Symbiotic on Oxidative Stress Reduction in Broilers with Pulmonary Hypertension Syndrome

Pulmonary Hypertension Syndrome (PHS), characterized by increased lung pressure in arteries, dilatation, and hypertrophy of the right ventricle, is correlated with the high cardiac output and enhanced blood pressure in the lungs to more blood oxygenation, which ultimately leads to ascites. The accumulation of free radicals and increased oxidative stress result in both lipid peroxidation, as well as the increased levels of heterophil to lymphocytes. By having antioxidant properties, the synbiotic can significantly reduce oxidative stress. Therefore, in the present study, we aimed to investigate the therapeutic effects of synbiotic on pulmonary hypertension in broilers. Groups were categorized into; Sham (broilers with a basic diet in the whole period of the test), Control (recipient of basic diet+ triiodothyronine hormone (T3) at 1.5 mg/kg doses added to their diet from seven days of age), Treatment with synbiotic (birds with basic diet + T3 at 1.5 mg/kg dose added to their diet from seven days of age + synbiotic (0.1% dose) from day one). At 35 and 49 days of age, 9 birds from each group (3 broilers from each replicate) were randomly selected, and after getting the blood samples, heterophil to lymphocyte rate and lipid peroxidation was assessed. To evaluate pulmonary hypertension, cardiac weight index was also reported due to the right ventricular weight to the total weight of both ventricles (RV/TV). RV/TV rate at all ages was decreased in the synbiotic broilers; however, this was statistically significant at 49 days of age (p ≤ 0.05). Compared to the control group, lipid peroxidation levels in synbiotic group at all ages were reduced which was significant at 35 and 49 days of age (p < 0.05). Furthermore, Heterophil to lymphocytes rates was decreased in the synbiotic group compared to the control group in all ages, but this decrease was more significant at 49 days of age (p < 0.05). Regarding the obtained results, symbiotic, for their antioxidant properties, can significantly reduce the amount of oxidative stress result from pulmonary hypertension syndrome.