Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Ilka Christine Klaas"'
Autor:
John Bonestroo, Mariska van der Voort, Nils Fall, Ulf Emanuelson, Ilka Christine Klaas, Henk Hogeveen
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 4, Pp 3518-3529 (2022)
ABSTRACT: Reduction of milk yield is one of the principal components in the cost of mastitis. However, past research into the association between milk yield and mastitis indicators is limited. Past research has not been based on online or in-line dai
Externí odkaz:
https://doaj.org/article/9013314e01194837b728b55635bd8ba5
Autor:
Ulf Emanuelson, Mariska Van der Voort, Ilka Christine Klaas, John Bonestroo, Henk Hogeveen, Nils Fall
Publikováno v:
Journal of Dairy Science, 105(4), 3518-3529
Journal of Dairy Science 105 (2022) 4
Journal of Dairy Science 105 (2022) 4
Reduction of milk yield is one of the principal components in the cost of mastitis. However, past research into the association between milk yield and mastitis indicators is limited. Past research has not been based on online or in-line daily measure
Autor:
John Bonestroo, Nils Fall, Henk Hogeveen, Ulf Emanuelson, Ilka Christine Klaas, Mariska van der Voort
Publikováno v:
Preventive Veterinary Medicine, 210
Preventive Veterinary Medicine 210 (2023)
Preventive Veterinary Medicine 210 (2023)
Mastitis is a production disease in dairy farming that causes economic losses. Especially chronic mastitis (i.e., mastitis cases continuing longer than 28 days) can substantially affect the risk of transmission of intramammary infections (IMI) and to
Autor:
John Bonestroo, Mariska van der Voort, Henk Hogeveen, Ulf Emanuelson, Ilka Christine Klaas, Nils Fall
Publikováno v:
Computers and Electronics in Agriculture, 198
Computers and Electronics in Agriculture 198 (2022)
Computers and Electronics in Agriculture 198 (2022)
Although most of the losses due to mastitis per case in dairy production are estimated to be caused by clinical cases, subclinical cases, especially chronic, can also be problematic due to milk production losses and the risk of transmission of pathog
Publikováno v:
Mahmmod, Y S, Svennesen, L, Katholm, J, Pedersen, K & Klaas, I C 2019, ' Bayesian estimation of qPCR and bacterial culture accuracy for detection of bovine coagulase-negative staphylococci from milk and teat apex at different test cut-off points ', Journal of Applied Microbiology, vol. 127, no. 2, pp. 406-417 . https://doi.org/10.1111/jam.14309
Mahmmod, Y S, Svennesen, L, Katholm, J, Pedersen, K & Klaas, I C 2019, ' Bayesian Estimation of qPCR and Bacterial Culture Accuracy for Detection of Bovine Coagulase-Negative Staphylococci from Milk and Teat Apex at Different Test Cut-off Points ', Journal of Applied Microbiology, vol. 127, no. 2, pp. 406-417 . https://doi.org/10.1111/jam.14309
IRTA Pubpro. Open Digital Archive
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Mahmmod, Y S, Svennesen, L, Katholm, J, Pedersen, K & Klaas, I C 2019, ' Bayesian Estimation of qPCR and Bacterial Culture Accuracy for Detection of Bovine Coagulase-Negative Staphylococci from Milk and Teat Apex at Different Test Cut-off Points ', Journal of Applied Microbiology, vol. 127, no. 2, pp. 406-417 . https://doi.org/10.1111/jam.14309
IRTA Pubpro. Open Digital Archive
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Aim: To primarily estimate the sensitivity (Se) and specificity (Sp) of the commercially available Mastit4 quantitative PCR (qPCR) assay and bacterial culture (BC) for diagnosis of intramammary infections (IMI) and teat apex colonization (TAC) with c
Publikováno v:
Svennesen, L, Lund, T B, Skarbye, A P, Klaas, I C & Nielsen, S S 2019, ' Expert evaluation of different infection types in dairy cow quarters naturally infected with Staphylococcus aureus or Streptococcus agalactiae ', Preventive Veterinary Medicine, vol. 167, pp. 16-23 . https://doi.org/10.1016/j.prevetmed.2019.03.016
The purpose of this study was to improve the diagnostic recommendations for Staphylococcus aureus and Streptococcus agalactiae control using bacterial culture (BC), polymerase chain reaction (PCR) and somatic cell count (SCC) as diagnostic methods. T
Autor:
Ilka Christine Klaas, Søren Saxmose Nielsen, Louise R. Mathiasen, Jørgen Katholm, Nanna K. Skjølstrup, Yasser S. Mahmmod, Line Svennesen, Karl Pedersen
Publikováno v:
IRTA Pubpro. Open Digital Archive
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Svennesen, L, Mahmmod, Y S, Skjølstrup, N K, Mathiasen, L R, Katholm, J, Pedersen, K, Klaas, I C & Nielsen, S S 2018, ' Accuracy of qPCR and bacterial culture for the diagnosis of bovine intramammary infections and teat skin colonisation with Streptococcus agalactiae and Staphylococcus aureus using Bayesian analysis ', Preventive Veterinary Medicine, vol. 161, pp. 69-74 . https://doi.org/10.1016/j.prevetmed.2018.10.013
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Svennesen, L, Mahmmod, Y S, Skjølstrup, N K, Mathiasen, L R, Katholm, J, Pedersen, K, Klaas, I C & Nielsen, S S 2018, ' Accuracy of qPCR and bacterial culture for the diagnosis of bovine intramammary infections and teat skin colonisation with Streptococcus agalactiae and Staphylococcus aureus using Bayesian analysis ', Preventive Veterinary Medicine, vol. 161, pp. 69-74 . https://doi.org/10.1016/j.prevetmed.2018.10.013
Streptococcus agalactiae (Strep. agalactiae) and Staphylococcus aureus (Staph. aureus) are originally regarded as contagious mastitis pathogens, however, both pathogens have recently been isolated from extramammary and environmental sites, indicating
Publikováno v:
IRTA Pubpro. Open Digital Archive
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Mahmmod, Y S, Nonnemann, B, Svennesen, L, Pedersen, K & Klaas, I C 2018, ' Typeability of MALDI-TOF assay for identification of non-aureus staphylococci associated with bovine intramammary infections and teat apex colonization ', Journal of Dairy Science, vol. 101, no. 10, pp. 9430-9438 . https://doi.org/10.3168/jds.2018-14579
Institut de Recerca i Tecnologia Agroalimentàries (IRTA)
Mahmmod, Y S, Nonnemann, B, Svennesen, L, Pedersen, K & Klaas, I C 2018, ' Typeability of MALDI-TOF assay for identification of non-aureus staphylococci associated with bovine intramammary infections and teat apex colonization ', Journal of Dairy Science, vol. 101, no. 10, pp. 9430-9438 . https://doi.org/10.3168/jds.2018-14579
Matrix-assisted laser desorption/ionization time of flight (MALDI-TOF), a culture-dependent assay, has recently been implemented for routine identification of non-aureus staphylococci (NAS) species from milk, but the assay has never been investigated
Publikováno v:
Journal of dairy science. 104(9)
Milk quality and clinical mastitis in dairy cows are monitored by detecting visually abnormal milk. A standardized method to evaluate clots in milk and studies of the incidence and dynamics of clots in milk at the quarter level are lacking. We valida
Autor:
John Bonestroo, Ilka Christine Klaas, Ulf Emanuelson, Henk Hogeveen, Nils Fall, Mariska van der Voort
Publikováno v:
Livestock Science 253 (2021)
Livestock Science, 253
Livestock Science, 253
The development of digital farming gives bovine mastitis research and management tools access to large datasets. However, the quality of registered data on clinical mastitis cases or treatments may be inadequate (e.g. due to missing records). In auto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98154ccf2339dfbdcf98d3f809b23022
https://research.wur.nl/en/publications/diagnostic-properties-of-milk-diversion-and-farmer-reported-masti
https://research.wur.nl/en/publications/diagnostic-properties-of-milk-diversion-and-farmer-reported-masti