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Effects of teat dipping disinfectant containing biodegradable iodophor microspheres on preventing dry period intramammary infection in dairy cows  

Hwang, Cheol-Yong (College of Veterinary Medicine, Seoul National University)
Kim, Jong-Min (College of Veterinary Medicine, Seoul National University)
Youn, Hwa-Young (College of Veterinary Medicine, Seoul National University)
Han, Bo (College of Veterinary Medicine, China Agricultural University)
Han, Hong-Ryul (College of Veterinary Medicine, Seoul National University)
Publication Information
Korean Journal of Veterinary Research / v.44, no.1, 2004 , pp. 113-120 More about this Journal
Abstract
1% iodophor loaded microspheres of PLGA (Poly[DL-Lactide-co-Glycolide]) were prepared by solvent evaporation method and were applied to the cows on dry period for evaluating it's preventive effects on intramammary infections. The morphology of the microspheres were evaluated using scanning electron microscopy and their releasing patterns were investigated. On investigating idophor releasing patterns of the microsphere, burst releasing pattern was detected until 2 days after in vitro incubation and sustained releasing was observed until 4 weeks. In field trial of teat dipping solution containing idophor loaded microspheres in dry cows showed significant preventive effects of intramammary infection caused by S. aureus, S. agalactiae, coagulase negative Staphylococci and coliform bacteria (p<0.05).
Keywords
microsphere; teat dipping solutin; iodophor; dairy cow;
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