Effect of Saccharomyces cerevisiae compared with monensin on oxidative stress in fattening lambs under thermal stress conditions
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Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Heat stress hurts the oxidative status of the body. To investigate the effect of yeast compared with monensin on oxidative stress of lambs in heat stress conditions, 15 male lambs were used in a completely randomized design in three groups with five replications. Experimental groups included group one: basal diet, group two: basal diet + five grams of yeast, and group three: basal diet + 30 mg monensin. Blood samples were collected from lambs' veins on day 56 and antioxidant enzymes and blood parameters were measured. The results revealed that supplementation of the basal diet with yeast significantly increased the level of glutathione reduction (4.16 µMol/mg plasma) and antioxidant enzymes activity superoxide dismutase (10.8 IU/mg plasma), catalase (2.15 nMol (per minute)/mg plasma), glutathione peroxidase (75.36 IU/mg plasma) and paraoxonase (42.71 IU/mg plasma). Also, the results showed that the amount of nitric oxide as an inflammation index (14.85 IU/mg plasma) and malondialdehyde as a lipid peroxidation index (33.74 IU/mg plasma) in the blood plasma of lambs were significantly decreased. Finally, the results of the current project demonstrated the diets contained yeast and the diet contained monensin compared to the control diet, were able to significantly increase thyroxin hormone (75.22 nMol/l) and liver enzyme concentration. Based on the findings of this study, adding yeast to 5 g/kg DM in the diet of lambs not only reduced the damage caused by oxidative stress but also improved the antioxidant status of lambs in heat stress conditions.
Language:
Persian
Published:
Animal Production Research, Volume:9 Issue: 4, 2021
Pages:
47 to 56
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