الكاتب: Multiple References

A within-herd comparison of teat dipping and dry cow therapy (full treatment) with only selective dry cow therapy (partial treatment) was carried out in six commercial dairy herds for a 2-year period . In the dry and periparturient period the quarters in the full treatment group that were least susceptible to mastitis were those uninfected at drying off: in the partial treatment group quarters infected with C. bovis at drying off were the least susceptible and micrococcal infected quarters the most susceptible to mastitis . The infection status of quarters at calving had little effect on their susceptibility to clinical mastitis in the full treatment group, while in the partial treatment group quarters infected with C. bovis and micrococci were less susceptible . Withholding dry cow therapy in uninfected and micrococcal infected quarters resulted in an unacceptably high rate of new major pathogen infection . Withholding teat dipping had little effect on levels of subclinical major pathogen infection but was associated with a higher level of minor pathogen infection and a lower incidence of coliform mastitis .