Reduction of oocyte shedding and cecal inflammation by 5 ‐aminolevulinic acid daily supplementation in laying hens infected with Eimeria tenella

AbstractThe present study aimed to evaluate the effects of 5-aminolevulinic acid (5-ALA) onEimeria tenella infection in laying hens. Oocyst shedding and histopathology were evaluated. A reduced oocyst shedding was observed 5 and 7  days post-infection (dpi) in the 5-ALA-administered group, but the total number of oocysts during the first infection period was not different between control and 5-ALA-treated groups. AfterE.  tenella attack infection, the period of oocyst shedding in the 5-ALA-administered group lasted less long than that in controls. During the attack infection period, the total number of fecal oocysts in the 5-ALA-treated group was significantly lower than that in the control group. However, the parasite burden score in hens receiving 5-ALA was higher than that in controls afterE.  tenella attack infection. The lesion scores at 5 and 30  dpi in the control group were significantly lower than those in the 5-ALA-administered group. Therefore, 5-ALA administration might be beneficial againstE.  tenella infection in laying hens.

Source: Animal Science Journal - January 11, 2023 Category: Zoology Authors: Toshimitsu Hatabu, Hung Hoang Son Pham, Wataru Aota, Shota Fujino, Rio Nishihara, Go Kawamura, Yuudai Sakogawa, Shin Taniguchi, Makoto Matsubayashi Tags: SHORT COMMUNICATION Source Type: research