Orange corn diets associated with lower severity of footpad dermatitis in broilers
Autor: | J.I. Vargas, Darrin M. Karcher, M.E. Abraham, Lisa Hoverman, Timothy A. Johnson, Torbert Rocheford, Shawna L. Weimer, Cara I. Robison, Darwin Ortiz, Evan Rocheford, Kailynn L. Scoles |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Litter (animal)
orange corn footpad dermatitis MANAGEMENT AND PRODUCTION Randomized block design Dermatitis Orange (colour) Biology broiler Zea mays SF1-1100 03 medical and health sciences Animal science Animals Carotenoid Poultry Diseases 030304 developmental biology chemistry.chemical_classification 0303 health sciences 0402 animal and dairy science Broiler food and beverages 04 agricultural and veterinary sciences General Medicine 040201 dairy & animal science Animal Feed carotenoid Diet Animal culture welfare chemistry Feather visual_art visual_art.visual_art_medium Animal Science and Zoology Composition (visual arts) Female Chickens Foot (unit) Citrus sinensis |
Zdroj: | Poultry Science, Vol 100, Iss 5, Pp 101054-(2021) Poultry Science |
ISSN: | 0032-5791 |
Popis: | Footpad dermatitis (FPD), damage and inflammation of the plantar surface of the foot, is of concern for poultry because FPD affects the birds' welfare and production value. Footpad dermatitis is painful and causes costly chicken paw downgrades, carcass condemnations, and reduced live weights. However, a universal preventative has not been found. The hypothesis was that diets containing orange corn, when compared with diets containing yellow or white corn, would reduce the severity of footpad dermatitis in broiler chickens on wet litter. When compared with yellow and white corn, orange corn contains higher quantities of carotenoids, antioxidant pigments, believed to play a role in skin and feather health. This experiment was a randomized block, 3 × 2 factorial design: orange, yellow, and white corn diets with birds raised on wet or dry litter (control group). Female Ross 708 broilers (n = 960) were used to create 4 replicates of each diet x litter treatment combination. Footpads were scored at day 19, 27, 35, and 42, following the Global Animal Partnership standard's 0-2 scale of visual increasing severity: 0 indicates minimal damage and 1 and 2 indicate mild to severe lesions and ulceration, dark papillae, and/or bumble foot. At 42 d of age, birds on the wet litter had greater severity of FPD, scores 1 and 2, compared with the control group (88 vs. 13% respectively; P < 0.0001). At 42 d of age, prevalence of more severe footpad scores, 1 or 2, was lowest on the orange corn diet (33%), followed by white corn (56%) and yellow corn (63%). Birds fed the orange corn diet had higher BW throughout the study (P = 0.004) and had fat pads and livers with higher yellow pigment deposition (P < 0.005). Litter moisture content altered microbiome composition but corn type did not. In conclusion, the main determinant of FPD in this study was exposure to wet litter. When compared with yellow and white corn, orange corn was associated with improved bird growth and reduced severity of footpad dermatitis, especially at later time points. |
Databáze: | OpenAIRE |
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