Ultrasonographic evaluation of teat structure and detection of prominent annular folds in Brazilian dairy buffaloes - Bittner, Lilli; Ollhoff, Rüdiger Daniel; Barbosa Neto, José Diomedes; Spilke, Joachim; Pogliani, Fabio Celidonio; Martinez, José Lino; Starke, Alexander (Journal of Buffalo Science, 2019)