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Title: Dietary acylated starch improves performance and gut health in necrotic enteritis challenged broilers
Contributor(s): M Sadeq, Shawkat (author); Wu, Shubiao  (author)orcid ; Swick, Robert A  (author)orcid ; Choct, Mingan  (author)orcid 
Publication Date: 2015
Open Access: Yes
DOI: 10.3382/ps/pev219Open Access Link
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Abstract: Resistant starch has been reported to act as a protective agent against pathogenic organisms in the gut and to encourage the proliferation of beneficial organisms. This study examined the efficacy of acetylated high amylose maize starch (SA) and butyralated high-amylose maize starch (SB) in reducing the severity of necrotic enteritis (NE) in broilers under experimental challenge. A total of 720 one-day-old male Ross 308 chicks were assigned to 48 floor pens with a 2 × 4 factorial arrangement of treatments. Factors were a) challenge: no or yes; and b) feed additive: control, antibiotics (AB), SA, or SB. Birds were challenged with Eimeria and C. perfringens according to a previously reported protocol. On d 24 and 35, challenged birds had lower (P < 0.001) livability (LV), weight gain (WG), and feed intake (FI) compared to unchallenged birds. Challenged birds fed SA and SB had higher FI and WG at d 24 and 35 (P < 0.05) compared to birds fed the control diet, while being significantly lower than those fed AB. Unchallenged birds fed SA or SB had higher FI at d 24 and 35 compared to those fed the control diet (P < 0.05). Birds fed SB had increased (P < 0.001) jejunal villus height/crypt depth (VH:CD) ratios at d 15, increased ileal (P < 0.001) and caecal (P < 0.001) butyrate levels at d 15 and 24, and decreased (P < 0.01) caecal pH at d 15. Birds fed SA had increased (P < 0.001) ileal acetate content at d 24 and decreased (P < 0.01) caecal pH at d 15. These results demonstrated that dietary acylated starch improved WG in birds challenged with necrotic enteritis. Depending on the acid used, starch acylation also offers a degree of specificity in short chain fatty acid (SCFA) delivery to the lower intestinal tract which improves gut health.
Publication Type: Journal Article
Source of Publication: Poultry Science, 94(10), p. 2434-2444
Publisher: Oxford University Press
Place of Publication: United States of America
ISSN: 1525-3171
Fields of Research (FoR) 2008: 070205 Animal Protection (Pests and Pathogens)
070204 Animal Nutrition
Fields of Research (FoR) 2020: 300304 Animal protection (incl. pests and pathogens)
300303 Animal nutrition
Socio-Economic Objective (SEO) 2008: 830309 Poultry
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

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