The Effect of Garlic Extract on Reducing of Side Effects of Eimeria tenella Oocyte on the Growth Indices and Mucosal Tissue of Cecum in Broiler Chickens

Subject Areas : Journal of Animal Biology

A. Dehghani-Ashkezari ¹ , M. Gholami-Ahangaran ² , E. Fathi-Hafshejani ³

1 - Graduated of Veterinary Medicine Faculty, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
2 - Department of Poultry Diseases, Veterinary Medicine Faculty, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
3 - Department of Poultry Diseases, Veterinary Medicine Faculty, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

Received: 2017-12-20 Accepted : 2018-12-20 Published : 2019-02-20

Keywords: broiler chicken, Garlic, Eimeria tenella,

Abstract :

In this study, the efficacy of garlic extract versus commercial toltrazuril drug on oocyte excretion of Eimeria tenella and improving the side effects of this oocyte on growth and performance indices of broiler chicks was studied. In this regard, 360 broiler chicks were randomly divided into eight groups with three replicates. Groups 1 to 4 received a suspension of E. tenella at the age of 21 days. Groups 1 and 2 received garlic extract at a dose of 500 and 1000 ppm, respectively; and in the group 3, the chickens received toltrazuril, 5 days after the challenge. Group 4 did not receive any treatment. In this study, four control groups were considered for the main groups, which only received the extract and were not challenged. At 7, 9, and 12 days after the challenge, the number of oocyst excretion was counted in these groups. Additionally, feed intake, weight gain and feed conversion ratio (FCR) were measured and compared weekly. The comparing of oocyte excretion rate in different groups showed that all treated groups were significantly different from each other. The least amount of oocyte excretion was observed in the group receiving toltrazuril. Analysis of growth indices at the end of growing period showed that although there was no significant difference between weight gain and feed intake among garlic extract recipients with toltrazuril, the lowest food conversion ratio was seen in the group receiving toltrazuril. In addition, there was no significant difference between the two groups receiving garlic extract. Therefore, it can be concluded that garlic extract can reduce oocyte excretion and improve growth indices in chickens infected with Eimeria tenella and can be effective as a supportive treatment in coccidiosis control.

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