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Abstract

The objective of this study was to estimate the effects of clinical mastitis (CM) cases due to different pathogens on milk yield in Holstein cows. The first 3 CM cases in a cow's lactation were modeled. Eight categories of pathogens were included: Streptococcus spp.; Staphylococcus aureus;...

Author(s)
Hertl, J. A.; Schukken, Y. H.; Welcome, F. L.; Tauer, L. W.; Gröhn, Y. T.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 3, pp 1465-1480
Abstract

The objective of this study was to estimate the effects of pathogen-specific clinical mastitis (CM), occurring in different weekly intervals before or after artificial insemination (AI), on the probability of conception in Holstein cows. Clinical mastitis occurring in weekly intervals from 6 wk...

Author(s)
Hertl, J. A.; Schukken, Y. H.; Welcome, F. L.; Tauer, L. W.; Gröhn, Y. T.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 11, pp 6942-6954
Abstract

The objective of this study was to estimate the effects of recurrent episodes of different types of clinical mastitis (CM) caused by gram-positive (Streptococcus spp., Staphylococcus aureus, Staphylococcus spp.) and gram-negative (Escherichia coli, Klebsiella, Citrobacter, Enterobacter, ...

Author(s)
Hertl, J. A.; Schukken, Y. H.; Bar, D.; Bennett, G. J.; González, R. N.; Rauch, B. J.; Welcome, F. L.; Tauer, L. W.; Gröhn, Y. T.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2011, 94, 10, pp 4863-4877
Abstract

Mastitis is one of the most frequent problems in contemporary dairy production. The primary objective of these investigations was to determine the incidence and species of bacteria in cows milk samples from 4 farms, which yielded a positive reaction to the California mastitis (CM) test. Milk...

Author(s)
Radanovic, O.; Jovicic, D.; Zutic, J.; Prodanovic, R.; Zutic, M.
Publisher
Bulgarian National Multidisciplinary Scientific Network of the Professional Society for Research Work, Lozenec, Bulgaria
Citation
Research people and actual tasks on multidisciplinary sciences. Proceedings of the Third International Conference, Volume 1, Lozenec, Bulgaria, 8-10 June, 2011, 2011, pp 222-226
Abstract

In this paper, we analyzed a very large field data set on intramammary infections (IMI) and the associated somatic cell count (SCC) in dairy cows. The objective of the study was to analyze the impact of coagulase-negative staphylococci (CNS) IMI on cow SCC, both mean and variability, and on the...

Author(s)
Schukken, Y. H.; González, R. N.; Tikofsky, L. L.; Schulte, H. F.; Santisteban, C. G.; Welcome, F. L.; Bennett, G. J.; Zurakowski, M. J.; Zadoks, R. N.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Microbiology, 2009, 134, 1/2, pp 9-14
Abstract

Susceptibility to intramammary infection (IMI) and to mastitis in Holstein cows was studied using logistic mixed-effects models and an approximate Bayesian analysis. Dichotomous response variables were the presence or absence of IMI, caused by any microorganism, IMI caused by Staphylococcus...

Author(s)
Rodríguez Zas, S. L.; Gianola, D.; Shook, G. E.
Citation
Journal of Dairy Science, 1997, 80, 1, pp 75-85

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