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Potential of a mixture of eugenol and garlic tincture to improve performance and intestinal health in broilers under necrotic enteritis challenge

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Animal Nutrition 2022年第1期8卷 26-37页

作者： Alip Kumar Nishchal K.Sharma Sarbast K.Kheravii Chake Keerqin Catherine Ionescu Alexandra Blanchard Shu-Biao Wu School of Environmental and Rural Science University of New EnglandArmidaleNSW2351Australia ADMi Pancosma SA A-One Business CenterLa piece 3CH-1180RolleSwitzerland

Plant extracts(PE)are gaining increased attention as potential alternatives to in-feed antimicrobials(AM)due to their known antimicrobial *** study was conducted to examine the potential of PE,a microencapsulated product composed of eugenol and garlic tincture as an alternative to AM-agent on performance and intestinal health in broilers under necrotic enteritis(NE)challenge.A total of 960 dayold mixed-sex Cobb 500 chicks were randomly distributed to 48-floor pens with 6 treatments replicated 8 times with 20 birds *** 6 treatments were as follows:UC,unchallenged control;CC,challenged control;PE,challenged group plus PE;AM,challenged group plus AM;FAP,challenged group plus a full dose of AM with PE;HAP,challenged group plus a half dose of AM with PE in starter,grower and finisher *** in the challenged groups were inoculated with Eimeria *** d 9 and Clostridium perfringens on d *** body weight gain(BWG),feed intake(FI),feed conversion ratio(FCR),and livability of birds were compromised,and intestinal lesions and mortality were increased(P<0.05)by NE challenge,illustrating a successful clinical NE *** fed AM had higher BWG and FI,and lower FCR,mortality,and intestinal lesions compared to the CC group(P<0.05).Birds fed PE had improved FCR(P<0.05)and livability(5.8%)in an overall period compared to the CC *** d 16,PE supplementation reduced ileal lesion scores in only male birds(P<0.05).Birds fed PE had decreased Eimeria maxima and Eimeria acervulina oocyst counts in caecal content(P<0.05).Birds fed PE had decreased Eimeria brunetti and total oocyst counts in caecal content,and *** oocyst counts in ileal content in only female birds(P<0.05).On d 35,PE supplementation reduced variation of BW in both male and female birds and increased yellowness(b*value,14.4%)in the *** findings suggest the potential of PE supplementation in diets to improve the performance and intestinal health of birds under clinical NE a

关键词： Plant extract Performance alternative to antimicrobials Clinical necrotic enteritis Broiler chicken

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