Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island
- PMID: 16808229
- PMCID: PMC1461414
Prevalence of contagious mastitis pathogens in bulk tank milk in Prince Edward Island
Abstract
The purpose of this study was to 1) estimate the herd prevalence of contagious mastitis pathogens in bulk milk from Prince Edward Island (PEI) dairy farms, 2) determine the association between bulk milk culture results and mean bulk milk somatic cell count (BMSCC), and 3) investigate the agreement of repeated bulk milk cultures. Three consecutive bulk milk samples were obtained at weekly intervals from all 258 PEI dairy herds and were cultured using routine laboratory methods. Cumulative prevalence of Staphylococcus aureus, Streptococcus agalactiae, and Mycoplasma spp. (M. bovis and M. alkalescens) was 74%, 1.6%, and 1.9%, respectively. Bulk milk somatic cell count of Staph. aureus-positive herds was higher than that of negative herds. Agreement for Staph. aureus isolation between 3 consecutive tests was moderate (kappa = 0.46). Mycoplasma bovis and M. alkalescens in bulk milk are being reported for the 1st time in PEI ever and in Canada since 1972.
Prévalence des pathogènes contagieux de la mammite dans le lait de citerne en vrac à l’Île-du-Prince-Édouard. La présente étude avait pour objectif 1) d’estimer la prévalence dans le troupeau des pathogènes contagieux de la mammite dans le lait en vrac provenant des fermes laitières de l’Île-du-Prince-Édouard (Î.-P.-É.), 2) de déterminer le lien entre les résultats de culture du lait en vrac et la numération moyenne des cellules somatiques du lait en vrac et 3) d’étudier la concordance entre les cultures répétées du lait en vrac. Trois échantillons consécutifs de lait en vrac ont été obtenus à des intervalles hebdomadaires auprès de l’ensemble des 258 troupeaux laitiers de l’Î.-P.-É. et ont été cultivés en utilisant les méthodes de laboratoire habituelles. La prévalence cumulative de Staphylococcus aureus, de Streptococcus agalactiae et de Mycoplasma spp. (M. bovis et M. alkalescens) était de 74 %, de 1,6 % et de 1,9 %, respectivement. La numération des cellules somatiques du lait en vrac des troupeaux positifs pour Staph. Aureus était supérieure à celle des troupeaux négatifs. La concordance de l’isolement de Staph. aureus entre 3 tests consécutifs était modérée (kappa = 0,46). Mycoplasma bovis et M. alkalescens dans le lait en vrac sont signalés pour la première fois à l’Î.-P.-É. et pour la première fois depuis 1972 au Canada.
(Traduit par Isabelle Vallières)
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References
-
- Jayarao BM, Wolfgang DR. Bulk-tank milk analysis. A useful tool for improving milk quality and herd udder health. Vet Clin North Am Food Anim Pract. 2003;19:75–92. - PubMed
-
- Farnsworth RJ. Microbiologic examination of bulk tank milk. Vet Clin North Am Food Anim Pract. 1993;9:469–474. - PubMed
-
- Gonzalez RN, Jasper DE, Bushnell RB, Farver TB. Relationship between mastitis pathogen numbers in bulk tank milk and bovine udder infections in California dairy herds. J Am Vet Med Assoc. 1986;189:442–445. - PubMed
-
- Fox LK, Kirk JH, Britten A. Mycoplasma mastitis: a review of transmission and control. J Vet Med B. 2005;52:153–160. - PubMed
-
- Pyörälä S. Staphylococcal and streptococcal mastitis. In: Sandholm M, Honkanen-Buzalski T, Kaartinen L, Pyörälä S, eds. The Bovine Udder and Mastitis. 1st ed. Helsinki: Faculty of Veterinary Medicine, University of Helsinki, 1995:143–148.
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