Summer mastitis in heifers: Studies on the seasonal occurrence of Actinomyces pyogenes, Peptostreptococcus indolicus and Bacteroidaceae in clinically healthy cattle in Denmark

Madsen, Mia; Sørensen, Gunner Høi; Aalbæk, Bent; Hansen, Julie Elvekjær; Bjørn, H.

doi:10.1016/0378-1135(92)90118-d

Cited by 20 publications

(9 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Owing to the mixed nature of the infections, the pathogenic role of gram-positive rods resembling A. pyogenes is difficult to define. A. pyogenes itself is a well-known animal pathogen and has been described as a causative agent of bovine mastitis and other pyogenic infections in various domestic animals (17,31,33). Reports of human infections are rare: an epidemic of leg ulcers in school children has been reported from Thailand (28).…”

Section: Discussionmentioning

confidence: 99%

Isolation of gram-positive rods that resemble but are clearly distinct from Actinomyces pyogenes from mixed wound infections

et al. 1993

View full text Add to dashboard Cite

Beginning in 1990, gram-positive rods resembling Actinomyces pyogenes were found with increasing frequency in mixed cultures from various infectious processes, most of them from patients with otitis, empyema, pilonidal cysts, perianal abscesses, and decubitus ulcers. Ribotyping and hybridization showed that these gram-positive rods could be divided into five groups not related to known Actinomyces species. Biochemical markers for reliable differentiation into these groups, however, could not be found. Therefore, naming new species is not warranted unless parameters are discovered that allow identification without DNA hybridization. These gram-positive rods have been isolated only in mixed cultures with anaerobes, Staphylococcus aureus, Streptococcus "mileri," enterococci, and gram-negative rods. Their exact role in these possibly synergistic infections needs further investigation.

show abstract

Section: Discussionmentioning

confidence: 99%

Isolation of gram-positive rods that resemble but are clearly distinct from Actinomyces pyogenes from mixed wound infections

et al. 1993

View full text Add to dashboard Cite

show abstract

“…1998). It is also well known as a causative agent of summer mastitis in nonlactating cows and heifers (Sarashina & Yonemichi 1991; Madsen et al . 1992).…”

Section: Introductionmentioning

confidence: 99%

“…It is frequently isolated from a variety of pyogenic infections, including mastitis, pyometra, arthritis, abscess in cattle, sheep, goats, pigs and other animals, singly or in combination with other organisms (Studer et al, 1978;Iwamatsu et al, 1986;Gardner et al, 1990;Noakes et al, 1990;Gezon et al, 1991;Lavin et al, 1998). It is also well known as a causative agent of summer mastitis in nonlactating cows and heifers (Sarashina and Yonemichi, 1991;Madsen et al, 1992). Abortion in dairy cattle due to this organism has also been described (Uematsu et al, 1989;Semambo et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Susceptibility ofArcanobacterium pyogenesIsolated from Cattle and Pigs

Yoshimura

Kojima

Ishimaru

2000

Journal of Veterinary Medicine, Series B

View full text Add to dashboard Cite

The minimum inhibitory concentrations (MICs) of 18 antimicrobial agents were determined for 49 Arcanobacterium pyogenes isolates (42 bovine isolates and 7 porcine isolates). Benzylpenicillin and ampicillin were the most active antibiotics, with MIC ranges of < or = 0.0125-0.05 microgram/ml for both bovine and porcine isolates. All isolates were susceptible to penicillins and cephems. MICs for 90% of the isolates of dihydrostreptomycin, gentamicin and oxytetracycline for bovine isolates were > 100 micrograms/ml, 1.56 micrograms/ml and 25 micrograms/ml, respectively. More resistance to dihydrostreptomycin appeared among porcine isolates (85.7%) than among bovine isolates (52.4%). Resistance to gentamicin occurred in only 3 (7.1%) of the bovine isolates. Resistance to oxytetracycline also appeared more frequent among porcine isolates (85.7%) than among bovine isolates (57.1%). All bovine isolates were susceptible to erythromycin, tilmocosin and lincomycin, but two porcine isolates (28.6%) were simultaneously resistant to these antibiotics. Tiamulin was as active as tilmicosin, with an MIC for 50% of the isolates (MIC50) of 0.05 microgram/ml for both bovine and porcine isolates. The MIC50s of chloramphenicol and its derivatives florfenicol and thiamphenicol were all 1.56 micrograms/ml. The fluoroquinolones enrofloxacin and ofloxacin were not so active as penicillins and macrolides, with MIC50s of 0.78 microgram/ml and 1.56 micrograms/ml, respectively, for both bovine and porcine isolates.

show abstract

“…These pathogens affected the mean SCC values depending on degree of infection (Samanta et al, 2006). Various other factors such as cytoplasmic environment, calving season and persistent contact / exposure to dung, high environmental humidity can also influence the incidence of SCM along with increased SCC in milk samples (Madsen et al, 1992).…”

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

View full text Add to dashboard Cite

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.

show abstract

Summer mastitis in heifers: Studies on the seasonal occurrence of Actinomyces pyogenes, Peptostreptococcus indolicus and Bacteroidaceae in clinically healthy cattle in Denmark

Cited by 20 publications

References 12 publications

Isolation of gram-positive rods that resemble but are clearly distinct from Actinomyces pyogenes from mixed wound infections

Isolation of gram-positive rods that resemble but are clearly distinct from Actinomyces pyogenes from mixed wound infections

Antimicrobial Susceptibility ofArcanobacterium pyogenesIsolated from Cattle and Pigs

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

Contact Info

Product

Resources

About