Table 2.

Linear regression analysis on the paired difference wound diameter (WD) with farm as fixed effect.

	Marginal mean WD, mm	SE	Range, mm	Marginal mean WD difference (OXY-NA), mm	95% CI, mm	P-value
Day 14 post disbudding
OXYa	14.82	0.12	10–30	−0.5	−0.77 to −0.20	0.001
NAb	15.31	0.13	10–30
Day 28 post disbudding
OXY	11.08	0.20	2–30	0.03	−0.36 to 0.41	0.89
NA	11.05	0.24	0–30
Day 42 post disbudding
OXY	4.20	0.19	0–22	0.07	−0.42 to 0.27	0.69
NA	4.23	0.20	0–20

^aOXY disbudding sites were sprayed with topical oxytetracycline aerosol after disbudding.

^bNA disbudding sites received no spray after disbudding.