1. Prevalence and duration of intramammary infections in Danish peripartum heifers by species;Aarestrup;J. Dairy Sci.,1997
2. Macrolides;Auckenthaler,1986
3. Udder microflora in nonlactating heifers;Boddie;Agri-Practice,1987
4. Antimicrobial resistance in streptococcal species isolated from bovine mammary glands;Brown;Am. J. Vet. Res.,1990
5. Prevalence of intramammary infections in breeding age heifer calves and in those heifers at first parturition;Fox;J. Dairy Sci.,1994