Apparent Johne' Disease in a Sheep

McCausland, I.P.

doi:10.1111/j.1751-0813.1980.tb02599.x

Cited by 16 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Approximately 1800 infected cattle herds (mostly dairy) have been detected in Victoria since 1994 out of a total of about 8100 dairy herds, but the prevalence in cattle in other states is much lower. 10,11 The disease was first reported in goats in Australia in 1977, 12 in sheep soon afterwards [13][14][15] and in alpaca in 1993. 16 Infected llama, deer and a rhinoceros were found in recent years ( RJ Whittington unpublished).…”

Section: Features Of Endemic Paratuberculosis Transmissionmentioning

confidence: 99%

Progress towards understanding the spread, detection and control of Mycobacterium avium subsp para‐tuberculosis in animal populations

2001

View full text Add to dashboard Cite

Paratuberculosis, a chronic enteropathy of ruminants, is caused by Mycobacterium avium subsp paratuberculosis and is transmitted mainly in faeces to young animals by infected adults, some of which may not have clinical signs. The incubation period is inversely related to the size of the challenge dose but can be extremely prolonged. Clinical cases may not be seen within the economic lifespan of farm animals, particularly when stocking rates are low, pasture is spelled, or when animals are culled at a relatively young age. Other as yet unknown influences may determine the rate of progression or recovery from infection. Paratuberculosis appears in a range of forms from a disease with high prevalence and significant mortality through to one with very low prevalence and little obvious morbidity or mortality. Detection of infected flocks and herds relies on use of laboratory tests. Bacteriological culture of faeces is the most sensitive herd-level test. The passage of time and repeated testing are the greatest allies in detecting paratuberculosis because infected animals progress in the disease process and most tests are more effective in the later stages of the disease. These factors generally cause the prevalence of paratuberculosis to be underestimated at both herd or flock and regional level. Greater understanding of the epidemiology and pathogenesis of M a paratuberculosis infection is critical in order to design improved diagnostic strategies, assess the feasibility of eradication and develop control options, particularly in small ruminants.

show abstract

Section: Features Of Endemic Paratuberculosis Transmissionmentioning

confidence: 99%

Progress towards understanding the spread, detection and control of Mycobacterium avium subsp para‐tuberculosis in animal populations

2001

View full text Add to dashboard Cite

show abstract

“…Although this case was not typed, considering the known exposure to contamination from infected cattle it was probably due to cross-infection with a cattle strain of M a paratuberculosis, rather than being due to a sheep strain. 48 In 1996 OJD was confirmed in goats on a known infected sheep property in the central tablelands area of New South Wales. 49,50 This property had sold large numbers of goats across New South Wales and interstate during the preceding few years, and investigation of traced flocks has confirmed OJD in goats on six properties in New South Wales by December 1999 (unpublished data).…”

Section: Cross-species Infectionmentioning

confidence: 99%

Ovine Johne's disease in Australia ‐ the first 20 years

Sergeant

2001

Aust Veterinary J

View full text Add to dashboard Cite

A national program is now in place to support the control of OJD and research to determine the feasibility and cost-effectiveness of eradication. The development of new diagnostic techniques, such as abattoir surveillance and pooled faecal culture, provide opportunities to refine surveillance strategies and to define better the distribution and prevalence of this disease, as required by the national program. Effective control measures, combined with quality surveillance data, will enable informed decision making for the future national management of OJD.

show abstract

“…1 Aborted bovine foetuses show nonspecific lesions and various degrees of autolysis. 2 In view of the considerable problems related to direct diagnosis of brucellosis in bovine abortions, 3 the objective of the present study was to evaluate the polymerase chain reaction (PCR) using genus specific primers derived from the gene coding for the B abortus immunogenic 31 Kda protein 4 as a tool for the detection of Brucella spp in aborted bovine foetuses.…”

Section: Ims-pcrmentioning

confidence: 99%

Comparison of immunomagnetic bead separation‐polymerase chain reaction and faecal culture for the detection of Mycobacterium avium subsp paratuberculosis in sheep faeces

Mason

2001

Aust Veterinary J

View full text Add to dashboard Cite

Apparent Johne' Disease in a Sheep

Cited by 16 publications

References 5 publications

Progress towards understanding the spread, detection and control of Mycobacterium avium subsp para‐tuberculosis in animal populations

Progress towards understanding the spread, detection and control of Mycobacterium avium subsp para‐tuberculosis in animal populations

Ovine Johne's disease in Australia ‐ the first 20 years

Comparison of immunomagnetic bead separation‐polymerase chain reaction and faecal culture for the detection of Mycobacterium avium subsp paratuberculosis in sheep faeces

Contact Info

Product

Resources

About