Bluetongue in sheep in India

Lonkar, P.S.; Uppal, P. K.; Belwal, L M; Mathur, Pallavi

doi:10.1007/bf02239801

Cited by 7 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Densities of exotic and cross-bred sheep also had a positive effect on outbreak numbers. Such breeds are known to be more susceptible to clinical signs of BT in India 57 and Nepal 17 than indigenous local breeds and so infection is more likely to result in a recorded outbreak. Indigenous local sheep breeds in Asia also show antibody prevalence against BT with few disease effects 58,59 , although sporadic clinical cases have been observed in these breeds since the 1980’s 20,60 .…”

Section: Discussionmentioning

confidence: 99%

Livestock host composition rather than land use or climate explains spatial patterns in bluetongue disease in South India

Chanda

Carpenter

Prasad

et al. 2019

Sci Rep

View full text Add to dashboard Cite

Culicoides-borne arboviruses of livestock impair animal health, livestock production and livelihoods worldwide. As these arboviruses are multi-host, multi-vector systems, predictions to improve targeting of disease control measures require frameworks that quantify the relative impacts of multiple abiotic and biotic factors on disease patterns. We develop such a framework to predict long term (1992–2009) average patterns in bluetongue (BT), caused by bluetongue virus (BTV), in sheep in southern India, where annual BT outbreaks constrain the livelihoods and production of small-holder farmers. In Bayesian spatial general linear mixed models, host factors outperformed landscape and climate factors as predictors of disease patterns, with more BT outbreaks occurring on average in districts with higher densities of susceptible sheep breeds and buffalo. Since buffalo are resistant to clinical signs of BT, this finding suggests they are a source of infection for sympatric susceptible sheep populations. Sero-monitoring is required to understand the role of buffalo in maintaining BTV transmission and whether they must be included in vaccination programs to protect sheep adequately. Landscape factors, namely the coverage of post-flooding, irrigated and rain-fed croplands, had weak positive effects on outbreaks. The intimate links between livestock host, vector composition and agricultural practices in India require further investigation at the landscape scale.

show abstract

Section: Discussionmentioning

confidence: 99%

Livestock host composition rather than land use or climate explains spatial patterns in bluetongue disease in South India

Chanda

Carpenter

Prasad

et al. 2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The sera from recovered animals were tested for BTV antibodies which confirmed the presence of BTV. Since the initial report in 1964, several outbreaks of BT in indigenous, cross bred and exotic sheep have been reported on the basis of clinical signs and/or serology (5,14,15,19,24,25,27,31,38,39,43,44,46) (Fig. 1).…”

Section: Sheepmentioning

confidence: 99%

“…Of 8,980 exotic, cross bred and indigenous sheep, 868 were affected, 100 of which died, giving an overall case fatality rate of 11.52%. Lonkar and colleagues (25) observed an outbreak of BT in sheep at the Central Sheep and Wool Research Institute (CSWRI) in Avikanagar, Rajasthan, and reported that Rambouillet and Merino were more susceptible than indigenous breeds. The morbidity rate in Merino and Rambouillet was 33.3% and 23.5% respectively.…”

Section: Sheepmentioning

confidence: 99%

Bluetongue virus infection in India : a review

Prasad¹,

Jain²,

Gupta³

1992

Rev. Sci. Tech. OIE

View full text Add to dashboard Cite

The history and epizootiology of bluetongue (BT) in India are reviewed. BT has become endemic in India. The first outbreak of BT in sheep and goats in the country was recorded in 1964 in Maharashtra State. Since then, several outbreaks of BT have been reported in sheep. Exotic sheep are more susceptible than indigenous and cross-bred sheep. A serological survey has indicated the presence of bluetongue virus (BTV) antibodies in cattle and buffalo in several states in India. However, clinical BT has not been observed in cattle or buffalo to date. Of the 24 known serotypes of BTV, 18 have been reported in India. Although BTV has been isolated from Culicoides midges, the particular species responsible for transmission has not yet been identified.

show abstract

“…BLUETONGUE was first reported in India in 1964 (Sapre 1964) and the disease has subsequently been observed in introduced breeds of sheep and their crosses in several parts of the country (Bhambani and Singh 1968, Uppal and Vasudevan 1980, Vasudevan 1982, Lonkar and others 1983). Bluetongue has also been recorded in native breeds of sheep in south India since 1981, when morbidity and mortality rates of 9.8 per cent and 1.1 per cent, respectively, were recorded in Maharashtra state (Harbola and others 1982).…”

mentioning

confidence: 99%

Isolation of bluetongue virus serotype 2 from native sheep in India

1999

View full text Add to dashboard Cite

Ouk 0 serogroup unknown with antibiotics. All isolated strains ofvibrios were serotyped at the National Institute of Infectious Diseases in Tokyo, Japan-(Table 1). The importance of V cholerae non-O1 as a disease causing organism in farm animals needs further research. However, the specific pathological findings in the goat, and the lambs with the increased watery fluid in the intestines followed by the sudden death of these animals closely resembles the pathophysiological effects seen in a positive ligated gut test. Vibrios, therefore, might be considered to be the causative agents in producing pathogenic toxins in the cases described above. Because the vibrios were isolated not only from the intestines, but also from the livers and lungs, the strains are likely to have invasive potential as well. Veterinary practitioners and microbiologists in animal diagnostic laboratories should be aware of the possibility of V cholerae as a participant in enteric infections of farm animals (Rhodes and others 1985). References

show abstract

Bluetongue in sheep in India

Cited by 7 publications

References 0 publications

Livestock host composition rather than land use or climate explains spatial patterns in bluetongue disease in South India

Livestock host composition rather than land use or climate explains spatial patterns in bluetongue disease in South India

Bluetongue virus infection in India : a review

Isolation of bluetongue virus serotype 2 from native sheep in India

Contact Info

Product

Resources

About