Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Inclusion of IgY in a dog's diet has moderate impact on the intestinal microbial fermentation

2019; Oxford University Press; Volume: 127; Issue: 4 Linguagem: Inglês

10.1111/jam.14378

1365-2672

Mariana Scheraiber, Łukasz Grześkowiak, Jürgen Zentek, Fellipe Freitas Barbosa, Ananda Portella Félix, A.V.Fischer Silva,

Veterinary Medicine and Surgery

This study aimed to evaluate the impact of immunoglobulin Y (IgY) in a diet on the systemic health and the gastrointestinal tract (GIT) of dogs. Sixteen healthy 11‐month‐old Beagle dogs were distributed at random (eight animals per treatment) in two treatments groups: control (0 g kg−1 IgY) and test (2 g IgY per day). The animals were evaluated on days 0 and 40 for a complete blood count (CBC) and biochemical profiles (ALT, ALP, creatinine and urea). Faecal samples were collected from days 35 to 40 to measure nutrient digestibility, faecal characteristics, sialic acid, intestinal microbiota composition and microbial metabolites. The CBC, biochemical profiles, apparent nutrient digestibility and faecal characteristics did not differ between the two treatment groups (P > 0·05). Dog faeces that received IgY were characterized by lower sialic acid and n‐valeric concentration, as well as an increase in n‐butyric concentration, in contrast to dogs fed a diet without IgY (P < 0·05). The other microbial faecal metabolites did not differ between the two treatment groups (P > 0·05). There tended to be an increase in the copy number of Clostridium cluster XIVa (Clostridium coccoides group) in the IgY group in contrast to the control group (P = 0·07). The other bacteria analysed did not differ between the treatment groups (P > 0·05). The colonic pH in the IgY group was lower than in control group (P < 0·05). The addition of IgY in the diet of healthy dogs maintains the microbial balance and has an interesting effect on microbial metabolites. The use of IgY, antibodies produced by laying hens, in animal feed is an alternative for the prevention and treatment of intestinal diseases in companion animals.