title: Comparative efficacy of dry-cow treatment regimens against Staphylococcus aureus.
abstract: Four dry-cow treatment regimens were evaluated against Staphylococcus aureus intramammary infections: 1) high persistency product at drying off and low persistency product 1 to 3 days prepartum; 2) high persistency product at drying off; 3) low persistency product 1 to 3 days prepartum; 4) untreated controls. Treatment 1 was no more efficacious (64.4%) than Treatment 2 (61.3%). Both treatments were significantly different from spontaneous recovery observed in Treatment 4 (41.2%), but not significantly different from Treatment 3 (46.9%). Dry-cow therapy reduced new S. aureus intramammary infections during the dry period by half. Prepartum treatment eliminated more than 90% of new Streptococcus uberis infections.
authors: North Louisiana Hill Farm Experiment Station, Louisiana State University, Homer 71040, USA.
authors: J W
authors: JW
authors: Pankey
authors: R M
authors: RM
authors: Barker
authors: A
authors: A
authors: Twomey
authors: G
authors: G
authors: Duirs