Original Research

Lumpy skin disease in cattle: Frequency of occurrence in a dairy farm and a preliminary assessment of its possible impact on Egyptian buffaloes

Mahmoud M. Elhaig, Abdelfattah Selim, Mohamed Mahmoud
Onderstepoort Journal of Veterinary Research | Vol 84, No 1 | a1393 | DOI: https://doi.org/10.4102/ojvr.v84i1.1393 | © 2017 Mahmoud M. Elhaig, Abdelfattah Selim, Mohamed Mahmoud | This work is licensed under CC Attribution 4.0
Submitted: 21 October 2016 | Published: 28 March 2017

About the author(s)

Mahmoud M. Elhaig, Department of Animal Medicine (Infectious Diseases), Suez Canal University, Egypt
Abdelfattah Selim, Department of Animal Medicine (Infectious Diseases), Benha University, Egypt
Mohamed Mahmoud, Department of Animal Medicine (Infectious Diseases), Suez Canal University, Egypt

Abstract

Lumpy skin disease (LSD) is an endemic infectious disease of cattle in Egypt. This survey aimed to define the prevalence of clinical and sub-clinical LSD virus (LSDV) infection among cattle and investigate their contact with water buffaloes (Bubalus bubalis) in order to improve the understanding of LSD epidemiology. Cattle and buffalo were examined owing to the appearance of skin lesions. Because clinical signs were consistent with LSDV infection, samples from cattle in a non-grazing dairy farm (n = 450) were submitted for LSDV testing together with those from the in-contact buffaloes (n = 100). Results revealed that the intra-herd percentage of cattle infected with LSDV varied with the detection method. This ranged from 22.4% to 65.4% by virus isolation (VI) and polymerase chain reaction (PCR), respectively, in clinical cattle samples, compared to 0% and 10% by VI and PCR in non-clinical cases. Using the neutralising index (NI), LSDV antibodies were found in 100% (n = 100) of the tested cow’s sera (NI = > 2.0 and ≥ 3.0), whereas buffalo’s sera (n = 34) displayed little increase in antibody level (NI ≥ 1.5). None of the buffalo were positive for LSDV by VI and PCR. In addition, there were no significant differences in LSD prevalence among the cattle with regard to age and sex. In conclusion, the occurrence of LSD in cattle warrants a further epidemiological study of the spread of the disease in the area and adoption of control and prevention strategies. In addition, the PCR assay was confirmed to be useful in the diagnosis of LSDV and for wider epidemiological studies.

Keywords

Lumpy Skin Disease; Cattle; Buffaloes; Detection; Egypt

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