Diversity of gram-positive catalase-negative cocci in sheep bulk tank milk by comparative 16S rDNA sequence analysis |
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| Affiliation: | 1. Departamento de Producción Animal, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain;2. Servicio de Bacteriología, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain;3. Departamento de Higiene y Tecnología de los alimentos, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain;1. Department of Animal Breeding and Genetics, Justus-Liebig-University Giessen, Ludwigstr. 21 b, 35390 Giessen, Germany;2. Institute of Biochemistry, Medical Faculty, Justus-Liebig University Giessen, Friedrichstr. 24, 35392 Giessen, Germany;1. Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555 Japan;2. State Central Veterinary Laboratory, Zaisan, Khan-Uul District, P.O.B-53/03, Ulaanbaatar 17024, Mongolia;3. Graduate School of Agriculture, Tohoku University, Tsutsumidori-Amamiya machi 1-1, Aoba-Ku, Sendai, Miyagi 981-8555, Japan;1. Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland;2. Life Sciences Department, University of Limerick, Limerick, Ireland;1. Dpto. Tecnología Agroalimentaria, Universidad Miguel Hernández (UMH), Ctra. de Beniel km 3.2, 03312 Orihuela, Spain;2. Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare, Università degli Studi di Milano, Via Celoria, 10, 20133 Milano, Italy;1. Facultad de Agronomía – Universidad de La Pampa, La Pampa, Argentina;2. INTA, EEA Anguil “Ing. Agr. Guillermo Covas”, Anguil, La Pampa, Argentina |
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| Abstract: | The species diversity of 192 isolates of a collection of Gram-positive catalase-negative cocci (GPCNC) from sheep bulk tank milk was investigated using 16S rDNA sequencing. A molecular approach enabled the identification of 23 species of GPCNC of sanitary and technological importance within the Enterococcus, Streptococcus, Lactococcus, Aerococcus and Trichococcus genera. This is relevant since ovine dairy products might be a source of commensal and potentially pathogenic or drug resistant GPCNC. Control strategies are needed in the food chain to optimise food safety and product development. |
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