The aim of this paper was to evaluate the effects associated with intramammary @entity281 (IMI) by a bacterium or a group of bacteria ( @entity794 , @entity5967 , @entity22193 , @entity8211 , coliforms, Staphylococci other than @entity794 , and Corynebacterium bovis) on the somatic cell count (SCC) in quarter milk of dairy @entity291 . Papers selected for analysis had to provide SCC values associated with the natural @entity281 in quarters by different bacteria. Sampling for measurement of SCC and determination of the @entity281 had to be done on the same day. Only papers published in English or in French after 1971 were considered. Twenty-one papers fulfilled the selection criteria. The animals sampled, the measurement techniques for SCC and the bacteriological identification, as well as the definition of the @entity281 , all differed widely among the selected studies. The meta-analysis method was used to estimate both the mean SCC (arithmetic and geometric) value and the average increase on SCC of each type of @entity281 . The geometric mean SCC in bacteriologically negative quarters was 68 000 c/mL. In case of IMI, the retained SCC was 357 000, 857 000, 547 000, 1 024 000, 1 151 000, 138 000 and 105 000 c/mL in quarters infected by @entity794 , @entity5967 , @entity22193 , @entity8211 , coliforms, staphylococci other than @entity794 and Corynebacterium bovis, respectively. The variation factors that could influence these SCC values and the bacteriological results are discussed.

Quarter milk somatic cell count in infected dairy XXXX : a meta-analysis.

@entity5967 :: ('1311', 'Species') :: ['Streptococcus agalactiae'] @entity794 :: ('1280', 'Species') :: ['Staphylococcus aureus', 'S. aureus'] @entity281 :: ('MESH:D007239', 'Disease') :: ['infection'] @entity8211 :: ('1349', 'Species') :: ['Streptococcus uberis'] @entity291 :: ('9913', 'Species') :: ['cows'] @entity22193 :: ('1334', 'Species') :: ['Streptococcus dysgalactiae']
@entity291 :: (9913,Species) :: ['cows']
