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Reservoirs of Corynebacterium spp. in the Environment of Dairy Cows

  • Although Corynebacterium spp. can be regularly associated with subclinical and clinical mastitis cases in dairy cows, knowledge on their reservoirs in dairy farms is sparse. Therefore, samples were collected at 10 visits with 14 day intervals from bedding material (n = 50), drinking troughs (n = 20), different walking areas (n = 60), cow brushes (n = 8), fly traps (n = 4), the passage to pasture (n = 9) as well as milking liners (n = 80) and milker gloves (n = 20) in one dairy cow farm. Additionally, quarter foremilk samples from all lactating cows (approximately 200) were collected at each visit. All samples underwent microbiological examination and cultured isolates were identified using MALDI-TOF MS. Most Corynebacterium spp. that were cultivated from milk were also isolated from the housing environment and milking-related niches (C. amycolatum, C. confusum, C. stationis, C. variabile, C. xerosis) or from milking-related niches only (C. frankenforstense, C. pilosum, C. suicordis). C. bovis was not cultivated from any environmental niche, while being the dominant species in milk samples. This study demonstrates that many Corynebacterium spp. present in milk samples can also be isolated from the cows’ environment. For C. bovis, the most relevant Corynebacterium species with regard to intramammary infections, it indicates that environmental reservoirs are of little relevance.

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Author:Svenja WoudstraORCiD, Anneke Lücken, Nicole WenteORCiD, Yanchao ZhangORCiD, Stefanie Leimbach, Maya Katrin Gussmann, Carsten KirkebyORCiD, Volker KrömkerORCiD
DOI original:https://doi.org/10.3390/pathogens12010139
Parent Title (English):Pathogens
Document Type:Article
Year of Completion:2023
Publishing Institution:Hochschule Hannover
Release Date:2023/02/20
Tag:bovine mastitis; corynebacteria; environmental sources of mastitis pathogens; reservoirs of mastitis pathogens
GND Keyword:Corynebacterium; Euterentzündung; Milchvieh
Article Number:139
Link to catalogue:1843781298
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:630 Landwirtschaft, Veterinärmedizin
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International