Table 5.

Final models for MH isolation outcomes at 10 weeks.

Outcome	Variable	Value	OR	95% CI	p-value
MH isolation	TxGroup	META	1.72	0.84–3.55	0.14
		NO META	Ref	Ref	Ref
MDR MH isolation	TxGroup	META	5.92	1.34–26.14	0.019
		NO META	Ref	Ref	Ref
Isolation of MH containing ICE	TxGroup	META	1.88	0.69–5.12	0.21
		NO META	Ref	Ref	Ref

BRD treatment (Yes or No) indicates whether an animal received antimicrobials for BRD treatment before 10 week sampling. TxGroup, treatment group; MH, Mannheimia haemolytica; BRD, bovine respiratory disease; MDR, multidrug resistant; META, tulathromycin metaphylaxis; NO META, no tulathromycin metaphylaxis; Ref, reference; OR, Odds Ratio; CI, confidence interval; ICE, integrative conjugative element.