Original scientific paper

Aetiology and prevalence of bovine intramammary infection at drying off.

Nino Maćešić orcid.org/0000-0003-4156-9431 ; Clinic for Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Tugomir Karadjole ; Clinic for Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Goran Bačić ; Clinic for Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Miroslav Benić orcid.org/0000-0001-7594-520X ; Croatian Veterinary Institute, Zagreb, Croatia
Martina Karadjole orcid.org/0000-0003-2718-3348 ; Clinic for Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Silvijo Vince orcid.org/0000-0002-1883-3225 ; Clinic for Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Marija Lipar ; Clinic for Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
Marijan Cergolj ; Clinic for Obstetrics and Reproduction, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia

Abstract

The aim of this research was to determine the etiology and prevalence of udder infection in dairy cows before drying off on dairy farms in Croatia. Research was carried out on 6 dairy farms in Croatia. Milk samples were taken in sterile plastic tubes during the last milking prior to drying off. Bacteriological examination of the milk samples produced 54 positive samples; the prevalence of intramammary infection (IMI) was 22.5%. The most common pathogens of IMI prior to drying off were Streptococcus spp. Lancefield group D (7.79%) and Staphylococcus aureus (6.56%). Other pathogens were coagulase-negative staphylococci (2.87%), Pseudomona spp. (2.46%), Streptococcus agalactiae (2.05%), and other microorganisms (1.23%). In this research, a higher IMI prevalence in the rear quarters (P = 0.03) compared to the front quarters was observed. There was no significant difference in the prevalence of infection (P = 0.07) when comparing the right and left quarters. A significantly higher prevalence of infection caused by Streptococcus spp. Lancefield group D (P = 0.04) and environmental pathogens (P = 0.02) was noted in the rear quarters. These results proved that environmental microorganisms were the most common pathogens of IMI, prior to drying off, in dairy cows in Croatia.

Keywords

cow; mastitis; intramammaary infecttion; prevalence; etiology

Hrčak ID:

78235

URI

https://hrcak.srce.hr/78235

Publication date:

8.3.2012.

Article data in other languages: croatian

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