Resumen

Objective: To compare four different dry cow treatments (DCT) and establish their effectiveness in reducing intramammary infections (IIM). Materials and methods: DCTs included systemic tylosin (12g) alone or accompanied by cefapirine intramammary infusions and or an internal teat sealant. A total number of 278 cows at the end of lactation period were randomly assigned to one of 4 dry cow treatment groups: CESE Group (n = 89), intramammary cephapirin and teat sealant. TYCESE Group (n = 84), intramammary cephapirin, tylosin 12 g intramuscular and teat sealant. TYSE Group (n = 86), 12 g intramuscular tylosin and teat sealant; TY Group (n = 76) 12 g intramuscular tylosin only. Milk samples for culture were collected at dry-off and 1 and 2 weeks after calving. Somatic cell counts (SCC) were taken from Dairy Herd Improvement Association (DHI) tests at dry-off, and the first two test days after calving. Results: Bacteria cure rate for Gram-positive intramammary infections (IMI) for TYCESE group was 93.6%, CESE group 78.9%, TYSE group 88.2%, and TY group 78.1%. All four groups showed a decrease in the SCC upon the first and second test after calving. Conclusions: The use of systemic tylosin in combination with intramammary antibiotics increased DCT effectiveness improving the Gram-positive cure rate IMI. Furthermore, systemic tylosin alone plus teat sealant is as effective as cephapirin plus teat sealant when used as DCT.

Palabras clave: Dry period mastitis tylosin (Source: CAB).

2013-04-09   |   474 visitas   |   Evalua este artículo 0 valoraciones

Vol. 17 Núm.3. Septiembre-Diciembre 2012 Pags. 3259-3264 Rev MVZ Córdoba 2012; 17(3)