Research was conducted in order to determine efficiency of sows’ udder sanitation concerning reduction of bacteria, which enter through contaminated teats in piglets’ organism. The research was carried out in farrowing pen with 90 sows, which were separated into three equal groups. The first group, control, was not treated. In the second group sows’ udders were treated with water and in the third group with healthy and ecologically acceptable commercial antiseptic Oxyl® with powerful oxidising bactericidal activity. During the period of 24 days microbiologic purity of the teats was determined by the method of swab before and after teat treatment, and cultivation on nutrient media. Samples were analysed for presence of mesophilic aerobic bacteria which were expressed as their total number per cm2 (CFU/cm2) of teat. Study results showed in both treated groups, compared to the control, significantly reduced number of bacteria. Besides, significantly lower bacteria number was determined in the third group treated with antiseptic, compared to the second group, treated only with water. Accordingly, everyday use of udder sanitation, which is commonly component of ruminants’ milking hygiene, could also significantly reduce sows’ teat bacterial contamination and consequently entering excessive bacteria in the piglets’ alimentary system. The following researches should provide the evidence if there exists connection between udder sanitation, reduced number of bacteria as potential causes of piglets’ alimentary diseases, and diseases’ appearance.Istraživanje je provedeno u svrhu utvrđivanja učinkovitosti sanitacije vimena krmača obzirom na smanjenje broja bakterija, koje preko onečišćenih sisa ulaze u organizam prasadi. Istraživanje je obavljeno u prasilištu s 90 krmača, koje su podijeljene u tri jednake skupine. Prva skupina, kontrola, nije tretirana. U drugoj skupini vime krmača tretirano je vodom, a u trećoj zdravstveno i ekološki prihvatljivim komercijalnim antiseptikom Oxyl®-om sa snažnim oksidativnim baktericidnim djelovanjem. Mikrobiološka čistoća sisa utvrđivana je tijekom razdoblja od 24 dana metodom brisa, prije i nakon tretmana sisa, te nasađivanjem na hranjivi agar. Uzorci su analizirani na prisutnost aerobnih mezofilnih bakterija, a rezultati izraženi kao njihov ukupni broj po cm2 (CFU/ cm2) sise. Rezultati istraživanja pokazali su u obje tretirane skupine, u usporedbi s kontrolom, značajno manji broj bakterija. Osim toga, značajno manji broj bakterija utvrđen je u trećoj skupini tretiranoj antiseptikom, u usporedbi s drugom skupinom, koja je tretirana samo vodom. Prema tome, svakodnevna sanitacija vimena, koja je sastavni dio higijene mužnje preživača, mogla bi značajno smanjiti i bakterijsko onečišćenje sisa krmača te posljedično unos prekomjernog broja bakterija u probavni sustav prasadi. Daljnja istraživanja trebala bi pokazati da li postoji povezanost između sanitacije vimena krmača, smanjenog broja bakterija kao mogućih uzroka probavnih bolesti prasadi i pojave bolesti
