Acta Veterinaria Scandinavica 2006, 48:22 http://www.actavetscand.com/content/48/1/22 Sandholm M, Honkanen-Buzalski T, Kaartinen L, Pyörälä S. Gum- merus kirjapaino Oy, Jyväskylä, Finland; 1995:121-141. 10. Agricultural register and information centre: Results of animal recording in Estonia 1998. Estonia 1999. 5, 14, 15, 23, 29, 34 11. Pitkälä A, Haveri M, Pyörälä S, Myllys V, Honkanen-Buzalski T: Bovine Mastitis in Finland 2001. J Dairy Sci 2004, 87:2433-2441. 12. Klastrup O, Schmidt Madsen P: Nordiske rekommendationer vedrøende mastitundesøgelser af kiertelprøver. Nord Vet Med 1974, 26:197-204. 13. Honkanen-Buzalski T, Griffin T, Dodd F: Observations on Coryne- bacterium bovis infection of the bovine mammary gland. I. Natural infection. J Dairy Res 1984, 51:371-378. 14. Honkanen-Buzalski T, Bramley AJ: Observations on Corynebacte- rium bovis infection of the bovine mammary gland. II. Exper- imental infection. J Dairy Res 1984, 51:379-385. 15. Peeler EJ, Green MJ, Fitzpatrick JL, Morgan KL, Green LE: Risk fac- tors associated with clinical mastitis in low somatic cell count british dairy herds. J Dairy Sci 2000, 83:2464-2472. 16. Barnouin J, Chassagne M, Bazin S, Boichard D: Management parac- tices from questionnaire surveys in herds with very low somatic cell score through a national mastitis program in France. J Dairy Sci 2004, 87:3989-3999. 17. Hovinen M, Aisla AM, Pyorala S: Visual detection of technical success and effectiveness of teat cleaning in two automatic milking systems. J Dairy Sci 2005, 88:3354-3362. 18. Peltola I: Use of peat as litter for milking cows. In proceedings of Odour prevention and control of organic sludge and livestock farming Sem- inar: 15–19 April 1985, Silsoe UK Edited by: Nielson VC, Voorburg JH, L'Hermite P. London: Elsevier Applied Science Publishers; 1986:181-187. 19. Manninen E: Effect of milking and milking machine on udder health. In the bovine udder and mastitis Jyväskylä, Finland, Gummerus kirjapaino Oy; 1995:236. Publish with Bio Med Central and every scientist can read your work free of charge "BioMed Central will be the most significant development for disseminating the results of biomedical research in our lifetime." Sir Paul Nurse, Cancer Research UK Your research papers will be: available free of charge to the entire biomedical community peer reviewed and published immediately upon acceptance cited in PubMed and archived on PubMed Central yours — you keep the copyright Submit your manuscript here: http://www.biomedcentral.com/info/publishing_adv.asp BioMedcentral Page 6 of 6 (page number not for citation purposes)