Effects of paromomycin on diarrhea incidence of preweaned Holstein calves in Brazil
Investigate the impact of paromomycin on the occurrence and length of diarrhea in preweaned Holstein calves; measure oocyst shedding and determine the effectiveness of the treatment in lowering the excretion of Cryptosporidium parvum; monitor body weight changes and average daily gain to evaluate effects on growth performance; and analyze the composition and diversity of the fecal microbiota in calves receiving paromomycin, focusing particularly on bacterial groups linked to gut health and fermentative processes.