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Title: Natural plant extracts and prebiotic compounds as alternatives to antibiotics in broiler chicken diets in a necrotic enteritis challenge model
Contributor(s): Vidanarachchi, Janak K (author); Mikkelsen, Lene L  (author); Constantinoiu, C C (author); Choct, Mingan  (author)orcid ; Iji, Paul  (author)
Publication Date: 2013
Open Access: Yes
DOI: 10.1071/AN12374Open Access Link
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Abstract: An experiment was conducted to determine the effects of two different water-soluble carbohydrate extracts (renga renga lily extract and 'Acacia' extract), and two commercially available prebiotic compounds, Fibregum and Raftifeed-IPE, on the performance of broiler chickens subjected to a necrotic enteritis (NE) challenge model. These treatments were compared with negative control and a positive (Zn-bacitracin) control treatments. An overall 8.8% NE-related mortality was recorded, with mean jejunal and ileal lesion scores in dead birds ranging from 3.03 to 3.90 in all challenged groups except the positive control groups. NE-specific deaths or clinical abnormalities were not observed with unchallenged control and positive control groups. At 7 days post-challenge, the concentration of specific IgY antibodies against the α-toxin of 'Clostridium perfringens' in the serum was lower ('P' < 0.05) in birds fed the positive control and Fibregum-supplemented diets than in the negative control group. However, birds fed Fibregum had increased ('P' < 0.05) IgM concentration compared with those fed 'Acacia' extract and lily extract. The Fibregum-fed group also had higher ('P' < 0.05) IgA concentrations in serum than did the positive-control and lily extract-supplemented groups at 14 days but this effect did not persist to 21 days. The results from the present study demonstrated that supplementation with water-soluble carbohydrates from two plant sources was not effective in controlling NE. However, the prebiotic compound Fibregum was found to be having some immunomodulatory effects. Addition of Zn-bacitracin and monensin was highly effective in counteracting the negative effects of the disease challenge.
Publication Type: Journal Article
Source of Publication: Animal Production Science, 53(12), p. 1247-1259
Publisher: CSIRO Publishing
Place of Publication: Australia
ISSN: 1836-0939
Field of Research (FOR): 070204 Animal Nutrition
070205 Animal Protection (Pests and Pathogens)
Socio-Economic Outcome Codes: 830309 Poultry
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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