IntroductionRespiratory disease incidence is intimately associated with an animal’s commensal bacteria populations (microbiome), as microbes that are involved with morbidity and mortality are commonly
Twenty-four Holstein bull calves (1-to-3-week old) received either an intranasal BT cocktail containing six Lactobacillus strains (3 × 109 CFU per strain) 24 h or saline (control) prior to intranasal
