Effect of dietary supplementation of essential oil and organic acid alone or in combination in broilers

Frances (Fenglan) Yan, I congratulate the team of researchers for their work, with the treatments and number of birds sufficient to evaluate the products in question. A single detail that caught my attention was the fact that no action of organic acids in modulating the immune system of birds has been proven. Therefore, how to justify the improvement observed in the FCR of birds with the use of OAB., If the results of the work did not prove, the recognized action of short chain organic acids in increasing IL 10., whose action is to decrease the proinflammatory cytokine production.