Peer-reviewed veterinary case report
Do hydrolysed chicken diets help dogs with chicken allergy itching
By Bizikova, Petra & Olivry, Thierry·Published in Veterinary dermatology·2016·Department of Clinical Sciences, United States·View original on PubMed →
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Original publication title: A randomized, double-blinded crossover trial testing the benefit of two hydrolysed poultry-based commercial diets for dogs with spontaneous pruritic chicken allergy.
- Species:
- dog
Plain-English summary
A group of dogs with chicken allergies was tested with two different hydrolyzed diets to see which one would cause fewer itching problems. The dogs were fed a hydrolyzed poultry feather diet and a hydrolyzed chicken liver diet over a period of time. While none of the dogs had itching issues with the poultry feather diet, 40% of the dogs experienced flare-ups after eating the chicken liver diet. This suggests that the hydrolyzed poultry feather diet is a better option for dogs with chicken allergies.
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Abstract
BACKGROUND: Hydrolysed protein diets are used to diagnose and treat dogs with cutaneous adverse food reactions (CAFR). Little is known about what proportion of dogs hypersensitive to the native protein would react to its hydrolysed form. OBJECTIVES: To determine the clinical allergenicity of hydrolysed poultry feather (RCU) and chicken liver diets (HZD) in dogs with chicken induced CAFR. METHODS: In this randomized, double-blinded, crossover trial, ten dogs with chicken induced CAFR were selected after a positive oral challenge to chicken meat and a negative one to corn. Test diets were fed for 14 days separated by a 14 day wash-out period. Owners rated pruritus daily with a Visual Analog Scale (PVAS). The challenge was ended if a flare in pruritus occurred (i.e. PVAS ≥5/10). RESULTS: The median PVAS scores before feeding RCU and HZD were 0.9 and 1.7, respectively (Wilcoxon signed rank test, P = 0.46). Pruritus scores increased significantly after feeding HZD (Friedman's test, P < 0.001) but not after feeding RCU (P = 0.895). None of the dogs fed RCU, but four dogs fed HZD (40%), were withdrawn after a flare in pruritus developed (Fisher's test, P = 0.04). The maximal PVAS score was significantly higher after HZD (median: 4.7) compared to RCU (2.5) (Wilcoxon signed rank test, P = 0.01). One dog in each group was withdrawn due to diarrhoea. CONCLUSIONS: The hydrolysed poultry feather diet did not induce pruritus flares in dogs allergic to chicken in contrast to the hydrolysed chicken liver diet that led to pruritus flares in 40% of these dogs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/27307314/