Fructo-oligosaccharides (scFOS) are prebiotic ingredients that improve protection against pathogens probably through promoting the growth of gastrointestinal bacteria-like Bifidobacteria and Lactobacilli: this stimulation may lead to a better development of immune repertoire and/or stimulation of the local immune response. According to the existence of the immune entero-mammary link, we were wondering if the dietary supplementation with scFOS could enhance the mucosal immunoglobulin level in mammary secretions. Results in this study show that bitches supplemented with scFOS exhibit higher colostrum and milk IgM content without concomitant effect on IgG1, IgG2 and IgA. In addition, intranasally immunized puppies exhibited a trend to higher Bordetella bronchiseptica-specific IgM immune response. The dietary supplementation with scFOS increased the IgM level in colostrums and milk of bitches by mechanisms which remain to be elucidated.
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