Effect of penethamate hydriodide treatment on bacteriological cure, somatic cell count and milk production of cows and quarters with chronic subclinical Streptococcus uberis or Streptococcus dysgalactiae infection

A randomized, controlled field trial was performed in The Netherlands to determine the therapeutic efficacy of parenteral penethamate hydriodide (Leocillin®) against naturally occurring, chronic, streptococcal mastitis during lactation. Quarter milk samples were collected from subclinical cases of S...

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Bibliographic Details
Published in:Journal of dairy research 2003-11, Vol.70 (4), p.387-394
Main Authors: St.Rose, Suzanne G, Swinkels, Jantijn M, Kremer, Wim DJ, Kruitwagen, Cas LJJ, Zadoks, Ruth N
Format: Article
Language:English
Subjects:
Animal productions
Animals
Anti-Bacterial Agents - therapeutic use
antibiotic
antibiotics
Biological and medical sciences
bulk milk
Cattle
Cell Count - veterinary
cows
dairy herds
Female
Fundamental and applied biological sciences. Psychology
lactation
Lactation - drug effects
Mammary Glands, Animal - microbiology
Mastitis
Mastitis, Bovine - drug therapy
milk
Milk - cytology
Milk - secretion
Milk production
milk yield
parenteral
pathogens
penethamate hydriodide
Penicillin G - analogs & derivatives
Penicillin G - therapeutic use
somatic cell count
Streptococcal Infections - drug therapy
Streptococcal Infections - veterinary
Streptococcus - drug effects
Streptococcus - isolation & purification
Streptococcus dysgalactiae
Streptococcus uberis
Terrestrial animal productions
therapeutics
Treatment Outcome
Vertebrates
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Summary:A randomized, controlled field trial was performed in The Netherlands to determine the therapeutic efficacy of parenteral penethamate hydriodide (Leocillin®) against naturally occurring, chronic, streptococcal mastitis during lactation. Quarter milk samples were collected from subclinical cases of Streptococcus uberis or Streptococcus dysgalactiae mastitis to determine the effect of treatment on bacteriological cure and somatic cell count (SCC) at quarter level. A quarter was considered to be cured when the bacterial species, isolated prior to treatment, was not isolated from the quarter milk samples taken on days 10 and 20 post-treatment (bacteriological cure), or when a quarter milk SCC (QMSCC) was
ISSN:0022-0299
1469-7629
DOI:10.1017/S0022029903006460