Author: Valle-Paraso MGR, Vidamo PJS, Anunciado RVP, Lapitan AM. 2005
effect of oral supplementation with aloe vera (Aloe barbadensis) on the immune response of broiler chickens to Newcastle disease (ND), aloe vera gel was effective in increasing mean antibody titers to ND, aloe vera solution, Significant increases in the absolute differential counts of monocytes, lymphocytes and heterophils were also observed in treated birds compared with controls, aloe vera in enhancing the immune response of broiler chickens to ND and in reducing the predisposition of birds to this debilitating disease.