Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/31743
Title: Potential of a mixture of eugenol and garlic tincture to improve performance and intestinal health in broilers under necrotic enteritis challenge
Contributor(s): Kumar, Alip  (author); Sharma, Nishchal K  (author)orcid ; Kheravii, Sarbast K  (author)orcid ; Keerqin, Chake  (author)orcid ; Ionescu, Catherine (author); Blanchard, Alexandra (author); Wu, Shu-biao  (author)orcid 
Publication Date: 2022-03
Early Online Version: 2021-10-05
Open Access: Yes
DOI: 10.1016/j.aninu.2021.07.007
Handle Link: https://hdl.handle.net/1959.11/31743
Abstract: 

Plant extracts (PE) are gaining increased attention as potential alternatives to in-feed antimicrobials (AM) due to their known antimicrobial activities. This 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 d-old mixed-sex Cobb 500 chicks were randomly distributed to 48-floor pens with 6 treatments replicated 8 times with 20 birds each. The 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 phases. Birds in the challenged groups were inoculated with Eimeria spp. on d 9 and Clostridium perfringens on d 14. The 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 challenge. Birds 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 group. On d 16, PE supplementation reduced ileal lesion scores in only male birds (P < 0.05). Birds fed PE had decreased E. maxima and E. acervulina oocyst counts in caecal content (P < 0.05). Birds fed PE had decreased E. brunetti and total oocyst counts in caecal content, and E. acervulina 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 b* value (14.4%) in the thigh. These findings suggest the potential of PE supplementation in diets to improve the performance and intestinal health of birds under clinical NE as indicated by improved FCR, livability, uniformity, reduced ileal lesions, oocyst counts and increased skin yellowness. However, the protective effect of PE may not be apparent in the presence of AM in the feed.

Publication Type: Journal Article
Source of Publication: Animal Nutrition, v.8, p. 26-37
Publisher: Zhongguo Xumu Shouyi Xuehui, Chinese Association of Animal Science and Veterinary Medicine
Place of Publication: China
ISSN: 2405-6383
2405-6545
Fields of Research (FoR) 2020: 300304 Animal protection (incl. pests and pathogens)
Socio-Economic Objective (SEO) 2020: 100411 Poultry
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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