Paratuberculosis sero-status and milk production, SCC and calving interval in Irish dairy herds

K. Hoogendam, E. Richardson, J.F. Mee

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    13 Citations (Scopus)

    Abstract

    The objective of this study was to investigate the impact of paratuberculosis sero-status on milk yield, fat, protein, somatic cell count and calving interval in Irish dairy herds. Serum from all animals over 12 months of age (n=2,602) in 34 dairy herds was tested for antibodies to Mycobacterium avium subsp. paratuberculosis using an ELISA. Herds were categorised by sero-status into positive, non-negative and negative, where a positive herd contained two or more positive cows, a non¿negative herd contained only one positive cow and a negative herd contained no positive cows. Data at animal, parity and herd-level were analysed by multiple regression using general linear models. Positive herds (mean herd size=129 cows) and non-negative herds (81 cows) were larger than negative herds (72 cows) (P
    Original languageEnglish
    Pages (from-to)265-271
    JournalIrish Veterinary Journal
    Volume62
    Issue number4
    DOIs
    Publication statusPublished - 2009

    Keywords

    • bovine viral diarrhea
    • mycobacterium-paratuberculosis
    • johnes-disease
    • infection
    • cattle
    • cows
    • usa
    • association
    • parameters
    • michigan

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