Incidence of clinical mastitis in dairy herds grouped in three categories by bulk milk somatic cell counts

Journal of Dairy Science
H W BarkemaA Brand

Abstract

Incidence of clinical mastitis was studied in 274 herds grouped in three categories by bulk milk somatic cell count (SCC). Mean incidence rate of clinical mastitis was 0.278, 0.257, and 0.252 cases per 365 cow-days at risk in herds with low (< or = 150,000), medium (150,000 to 250,000), and high (250,000 to 400,000 cells/ml) bulk milk SCC, respectively. The incidence rate of clinical mastitis was not different among the three categories. Variance in the incidence of clinical mastitis among herds increased as bulk milk SCC decreased. Clinical mastitis caused by Gram-negative pathogens, such as Escherichia coli, Klebsiella spp., or Pseudomonas spp., occurred more often in herds with a low bulk milk SCC. Clinical mastitis caused by Staphylococcus aureus, Streptococcus dysgalactiae, and Streptococcus agalactiae occurred more often in herds with a high bulk milk SCC. Systemic signs of illness caused by clinical mastitis occurred more often in herds with a low bulk milk SCC. Both overall culling rate and culling rate for clinical mastitis were not different among groups catergorized by bulk milk SCC. In herds with a high bulk milk SCC, however, more cows that produced milk with a high SCC were culled. In herds with a low bulk milk SC...Continue Reading

References

May 15, 1976·The Veterinary Record·T O Jones
May 1, 1990·Journal of Dairy Science·Y H SchukkenF J Grommers
Jul 15, 1989·The Veterinary Record·Y H SchukkenA Brand
Jun 1, 1989·Journal of Dairy Science·J S HoganB L Brockett
Feb 22, 1986·The Veterinary Record·J W WilesmithC D Wilson
Jul 12, 1980·The Veterinary Record·E R Jackson
Mar 30, 1996·The Veterinary Record·M J GreenP J Cripps
Jan 11, 1997·The Veterinary Record·R J Esslemont, M A Kossaibati

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Citations

Mar 24, 2012·Animal : an International Journal of Animal Bioscience·J C Detilleux
Mar 24, 2012·Animal : an International Journal of Animal Bioscience·A D RowsonS B Puntenney
Nov 23, 2012·Animal : an International Journal of Animal Bioscience·Y de HaasR F Veerkamp
Oct 12, 2007·New Zealand Veterinary Journal·K I ParkerS McDougal
Nov 25, 2003·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Linda L TikofskyYnte H Schukken
Jul 4, 2007·Antimicrobial Agents and Chemotherapy·Junqiang WuLiting Cao
Nov 24, 2012·Clinical and Vaccine Immunology : CVI·Kathleen A Thompson-CrispiBonnie A Mallard
Nov 23, 2006·Acta Veterinaria Scandinavica·Piret KalmusKalle Kask
Jan 1, 2009·Irish Veterinary Journal·Rn Zadoks, Jl Fitzpatrick
Jan 1, 2013·Bioinformation·Mahantesh Mallikrjun KurjogiBasappa Basaveneppa Kaliwal
Oct 10, 2013·The Journal of Dairy Research·Ioannis G Petridis, George C Fthenakis
May 28, 2013·The Veterinary Quarterly·Herman W BarkemaRuth N Zadoks
Oct 24, 2014·Frontiers in Immunology·Kathleen Thompson-CrispiBonnie A Mallard
Feb 15, 2005·Veterinary Microbiology·Sylvain Brisse, Engeline van Duijkeren
Mar 20, 2008·Journal of Dairy Science·W SteeneveldR B M Huirne
Mar 20, 2008·Journal of Dairy Science·R G M Olde RiekerinkD T Scholl
Aug 19, 2007·Journal of Dairy Science·C W R ComptonS McDougall
Jan 4, 2017·Journal of Animal Science·J A RobbinsD M Weary
Feb 6, 2018·Journal of Dairy Science·S Ali NaqviHerman W Barkema
Mar 5, 2018·Journal of Dairy Science·C Fischer-TenhagenW Heuwieser
Nov 6, 2017·Journal of Dairy Science·Maya GussmannTariq Halasa
Jul 1, 2009·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Audrey H TorresFred J DeGraves
Oct 31, 2017·Transboundary and Emerging Diseases·I C Klaas, R N Zadoks

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