The Isolation of Streptococcus Uberis from Cows in Two Dairy Herds

Bramley, A. J.; King, J.S.; Higgs, T. M.

doi:10.1016/s0007-1935(17)32886-5

Cited by 21 publications

(16 citation statements)

References 13 publications

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“…[5], and it has been suggested that extramammary sources are responsible for the relative ineffectiveness of post-milking teat disinfection to control mastitis caused by S. uberis. This organism has also been isolated frequently from non-lactating mammary glands and from cases of clinical mastitis following parturition [2].…”

Section: Discussionmentioning

confidence: 99%

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Genotypic and phenotypic analysis ofStreptococcus uberisisolated from bovine mammary secretions

et al. 1991

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SUMMARYGenotypic and phenotypic analysis of 42 strains of Streptococcus uberis isolated from mammary secretions of 17 cows collected at different periods of the lactation cycle and from episodes of clinical mastitis were performed. [5], and it has been suggested that extramammary sources are responsible for the relative ineffectiveness of post-milking teat disinfection to control mastitis caused by S. uberis. This organism has also been isolated frequently from non-lactating mammary glands and from cases of clinical mastitis following parturition [2].Epidemiologic studies of S. uberis have been limited by the lack of a convenient, * Author for (orresp)onl(letlwe.

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Section: Discussionmentioning

confidence: 99%

“…Restriction patterns of S. uberis showed that fragment length of the discriminating region was between 9 and 23 kb. Fragments smaller than 5 zooepidemicus [12]. S. suis [13] and B group streptococci [11].…”

Section: Li)scussionmentioning

confidence: 99%

Genotypic and phenotypic analysis ofStreptococcus uberisisolated from bovine mammary secretions

et al. 1991

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“…uberis outbreaks and straw bedding (i 7) and a herd with a high incidence of Str. uberis was found to have a greater proportion of extramammary sites harbouring the organism (21). The alimentary tracts of some cows are colonized by Str.…”

Section: Stages In the Infection Processmentioning

confidence: 98%

“…While a few hundred Staph. aureus readily colonize the teat orifice, this process does not inevitably lead to intramammary infection (21,62). In contrast, E. coli seems unable to colonize the teat duct of the lactating cow yet can be a frequent cause of mastitis among housed cattle (22).…”

Section: Penetration Of the Teat Duct By Pathogensmentioning

confidence: 99%

Reviews of the progress of Dairy Science: Mastitis control – progress and prospects

Bramley

Dodd

1984

Journal of Dairy Research

211

115

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Introduction Development of control methods Antibiotic therapy Hygiene Control schemes Milking machine research Mastitis awareness The value of current control methods Aetiology of mastitis Staphylococcus aureus Streptococcus agalactiae Streptococcus dysgalactiae Streptococcus uberis Coliforms Pseudomonas aeruginosa Mycoplasma bovis Corynebacteria General characteristics of bovine mastitis Stages in the infection process Exposure to pathogenic microorganisms CONTENTS PAGE 481 482 482 483 483 484 484 485 486 486 486 487 487 487 488 488 488 489 489 490 Penetration of the teat duct by pathogens Establishment of an intramammary infection Parasite factors Host factors Cellular and immune defence of the udder Nonspecific defence mechanisms Elimination of infections Culling Spontaneous recovery from infection Antibiotic therapy Dynamics of infection in dairy herds Effects of mastitis monitoring systems on awareness and control Conclusions References * Grant aided by the Agricultural and Food Research Council.

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“…While S.uberis being opportunistic could thrive and proliferate in tissues other than mammary glad. including lips, haircoat, tonsils and the rectum of cows (Bramley et al, 1979). Todhunter et al (1994) opined that the rate of Streptococcal infection was high in summer season in lactating and dry cows.…”

Section: Resultsmentioning

confidence: 99%

Multiplex-PCR to detect pathogens and analysis of relation of age and stage of lactation of cows to sub-clinical mastitis

Rm¹,

Isloor²,

Rathnamma³

et al. 2016

JEBAS

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In this study, 225 milk samples were collected sequentially during 1 st to 88 th day from 25 HF cross cows in an organized farm. First five collections were obtained at a weekly interval (1,7,14,21 and 28 days) and later, fortnightly for two months (43, 58, 73 and 88 days). These milk samples were screened for Subclinical mastitis (SCM) by Somatic Cell Count (SCC). Further, multiplex-PCR for detection of S.aureus, E.coli, S.agalactiae, S.dysgalactiae and S.uberis was employed to detect the major bacterial pathogens. The SCM positivity was assessed based on criteria of SCC ≥ 500,000 cells /ml. The study revealed the high prevalence of variable SCM pattern in milking cows by SCC (73.33 %) in sequentially collected milk samples over a period of 88 days. No specific pattern of prevalence of SCM was observed during the study period. The prevalence of SCM was not influenced by the stage of lactation. In all the stages of lactation and age groups S. aureus, Streptococci and E.coli were detected with the predominance of S. aureus. The varied distribution of organisms in different stages of lactation did not influence the prevalence of SCM. Further, the high prevalence of SCM was noticed in aged cows. Among these, maximum number of milk samples (46 %, 52/113) revealing the presence of pathogens were obtained from cows in the age group 7-11 years. The multiplex PCR was found an easy and rapid method to detect the predominant pathogens causing SCM. The findings emphasize the need to control SCM through sequential monitoring of SCM through SCC, multiplex-PCR and proper managemental practices.

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The Isolation of Streptococcus Uberis from Cows in Two Dairy Herds

Cited by 21 publications

References 13 publications

Genotypic and phenotypic analysis ofStreptococcus uberisisolated from bovine mammary secretions

Genotypic and phenotypic analysis ofStreptococcus uberisisolated from bovine mammary secretions

Reviews of the progress of Dairy Science: Mastitis control – progress and prospects

Multiplex-PCR to detect pathogens and analysis of relation of age and stage of lactation of cows to sub-clinical mastitis

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