01234nas a2200241   4500000000100000000000100001008004100002260007000043653001800113653001900131653001700150100001300167700002600180700001600206700001800222700001300240700001300253245013300266300001200399490000800411520055900419022001400978       2014                            d  c06/2014bSchlütersche Verlagsgesellschaft mbH & Co. KGaHannover10aleptospirosis10aseroprevalence10adairy cattle1 aK Rypula1 aK Płoneczka-Janeczko1 aK Bierowiec1 aP Chorbiński1 aM Pearce1 aM Lesiak00aPrevalence of antibodies to Leptospira hardjo in bulk tank milk from unvaccinated dairy herds in the south-west region of Poland  a247-2500 v1273 aBulk tank milk samples were collected from 309 randomly selected dairy cattle herds from the south-western region of Poland in 2010–2011. Samples were tested for antibodies against Leptospira hardjo using DAS-ELISA. Herd level seroprevalence of antibodies against this serovar was low (3.2%). Sample value related to positive control value (S/P ratio) results were highest in herds with 51–100 and 101–500 animals, being 4.6 and 4.1% respectively. The S/P ratio of positive samples indicated a low percentage of infected animals in positive herds.   a0005-9366