Role of oregano and Citrus species-based essential oil preparation for the control of coccidiosis in broiler chickens  

作　　者：Francisco Xavier Gordillo Jaramillo Da-Hye Kim Sang Hyeok Lee Sun-Kwan Kwon Rajesh Jha Kyung-Woo Lee 

机构地区：[1]Department of Animal Science and Technology,Konkuk University,120 Neungdong-ro,Gwangjin-gu,Seoul 05029,Republic of Korea [2]Harim Bio Research Center,Jeilfeed Co.,LTD,136 Techno2-ro,Yuseong-gu,Deajeon-si 34025,Republic of Korea [3]Department of Human Nutrition,Food and Animal Sciences,College of Tropical Agricultural and Human Resources,University of Hawaii at Manoa,Honolulu,HI 96822,USA

出　　处：《Journal of Animal Science and Biotechnology》2021年第3期1089-1097,共9页畜牧与生物技术杂志（英文版）

基　　金：These studies were approved by the Institutional Animal Care and Use Committee of Konkuk University(Gwangjin-gu,Seoul,Republic of Korea,KU15186).

摘　　要：Background:Due to presence of drug-resistant Eimeria strains and raised public health safety concerns about drug residues in the meat,there is renewed interest in the search for natural alternatives to the coccidiosis control agents.This study was conducted to test the anticoccidial efficacy of oregano and Citrus spp.-based essential oils for broilers.Methods:A total of 2807-day-old broiler chicks were fed a control diet or diets with salinomycin or essential oils for up to 35 d of age.On d 14,half of the control groups and the treated groups were orally challenged with a coccidiosis vaccine at 25 times higher than the recommended vaccine dose.Control diet-fed chickens that were gavaged with phosphate-buffered saline were considered non-challenged control group.Results:Eimeria challenge or dietary additives failed to affect growth performance during the 7 to 20 d growth period although essential oil-fed chickens exhibited the lowest body wight gain(P=0.332)and the highest feed conversion ratio(P=0.062).Oocysts in the litter were detected in the challenged control diet group and the challenged/essential oil-fed groups at 21 and 35 d,respectively.Superoxide dismutase activity in the serum was elevated(P=0.059)in the salinomycin-fed chickens compared to the challenged controls.Alpha-1-acid glycoprotein was decreased by 28.7%in the salinomycin-fed chickens but increased by 38.1%in the essential oil group compared with the challenged control group.Challenged control group exhibited a significantly higher cooking loss of the thigh meat,compared to the non-challenged control diet group,which was marginally mitigated by dietary supplementation with essential oils.Chickens fed essential oil-added diet had the highest branched-chain fatty acids contents in the cecum.Conclusions:In conclusion,this study shows that oregano and Citrus-based essential oil preparation did not affect growth performance in broiler chickens challenged with the coccidiosis vaccine nor did Eimeria-specific duodenal lesion.However,dietary essential o

关 键 词：Broiler chickens COCCIDIOSIS Essential oils Growth performance SALINOMYCIN 

分 类 号：S858.31[农业科学—临床兽医学]