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Aetiology of intramammary infection and its effect on milk composition in goat flocks

Published online by Cambridge University Press:  17 January 2007

Gabriel Leitner
Affiliation:
National Mastitis Reference Center, Kimron Veterinary Institute, PO Box 12, Bet Dagan 50250, Israel
Uzi Merin
Affiliation:
Department of Food Science, Agricultural Research Organization, The Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Yotva Lavi
Affiliation:
Sha'ar Ephraim, Israel
Anat Egber
Affiliation:
Kornmehl Farm, Israel
Nissim Silanikove
Affiliation:
Ruminant Physiology, Institute of Animal Science, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel

Abstract

Although there has been little study of the origin of intramammary infection (IMI) in goats, a common view is that most bacterial infection in goats occurs during milking. In the present study, the dynamics of occurrence of udder infection during and between lactations in three Anglo-Nubian goat farms in Israel was monitored. Coagulase-negative staphylococci were the predominant bacteria in the IMIs. We found that about 15% of the yearling does were already infected with bacteria when they joined the flock, whereas about 8% of the goats that dried-off returned with new IMIs. Moreover, virtually none of the goats acquired infection during lactation. Thus, our study showed that the aetiology of IMI in goats is very similar to that in dairy cows. A preventive treatment during the dry period should, therefore, be considered as an effective means of reducing the current rate of bacterial infections in goats.

Type
Research Article
Copyright
Proprietors of Journal of Dairy Research 2007

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