Table A1.

Timing of antimicrobial administration for the control and treatment of bovine respiratory disease (BRD) and respective post-metaphylactic or -treatment intervals (PMI or PTI) for steers and heifers at medium risk for BRD in the clinical trial.

	Experimental Treatment
Antimicrobial	Pull-and-Treat	Metaphylaxis	PMI/PTI, Days
Tulathromycin *	First clinical BRD	Initial processing	5
Florfenicol †	Second clinical BRD	First clinical BRD	3
Oxytetracycline ‡	Third clinical BRD	Second clinical BRD	2
Danofloxacin §	Fourth clinical BRD ⸙	Third clinical BRD ⸙	-

* Draxxin; Zoetis Animal Health, Parsippany, NJ, USA. ^† Resflor Gold; Merck Animal Health, De Soto, KS, USA. ^‡ Bio-Mycin 200; Boehringer Ingelheim, St. Joseph, MO, USA. ^§ Advocin; Zoetis Animal Health, Parsippany, NJ, USA. ^⸙ Animals were removed from the trial following antimicrobial treatment.