Abstract
ABSTRACT: The efficiency of the disinfectants used in the milking management is fundamental to the success in the dairy activity, being a critical point to the control of mastitis. The objective was to evaluate the in vitro efficacy of iodine used in pre and post-dipping against coagulase negative Staphylococcus (CNS). Thus, 53 CNS isolates were studied for the action of the 1.0% disinfectant and their serial dilutions of 0.5%, 0.375% and 0.25%, in addition to two commercial presentations of iodine in concentrations of 0.5% and 0.25%. The rate of CNS inhibition achieved by iodine at 0.375%, 0.5% and 1.0% for 60 seconds, was 60.4%. In 30 seconds, iodine at 0.5% and 1.0% showed a microbial inhibition rate of 52.8% and 56.6%, respectively. The other protocols tested were less efficient. It is concluded that the greatest in vitro disinfectant activity for CNS was demonstrated by iodine at 0.375%, 0.5% and 1.0%, for 60 seconds. Microbial susceptibility tests should be carried out periodically, as well as health education practices and corrective training on the property, in order to ensure udder health and mastitis control.
Highlights
Eficácia in vitro do iodo no pré e pós dipping frente a Staphylococcus coagulase negativa isolados em leite de vacas com mastite subclínica
Mastitis is an inflammation of the mammary gland, caused mainly by bacteria, in clinical or subclinical forms (ADKINS & MIDDLETON, 2018)
Disinfection of teats before and after milking with antimicrobial products, such as iodine, chlorine, chlorhexidine or quaternary ammonia, is a widely used practice in the prevention of mastitis (RUEGG, 2017; ROWE et al, 2018). The efficiency of these disinfectants is fundamental to the success in the dairy activity, being a critical point in the control of the disease (SKOWRON et al, 2019)
Summary
Eficácia in vitro do iodo no pré e pós dipping frente a Staphylococcus coagulase negativa isolados em leite de vacas com mastite subclínica. The objective of this study was to determine the in vitro efficacy of iodine used in pre and post-dipping against coagulase negative Staphylococcus (CNS), isolated from the milk of cows with subclinical mastitis.
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