Effects of probiotics in the ultrasonographic findings of the gastrointestinal tract in beagle dogs - Feliciano, M. A. R. [UNESP]; Leite, C. A. L. [UNESP]; Silveira, T. [UNESP]; Nepomuceno, A. C. [UNESP]; Vicente, W. R. R. [UNESP] (Wiley-Blackwell, 2010)