scholarly journals Diagnosis of naturally occurring lumpy skin disease virus infection in cattle using virological, molecular, and immunohistopathological assays

2021 ◽  
pp. 2230-2237
Author(s):  
Dawlat M. Amin ◽  
Gehan Shehab ◽  
Rawhya Emran ◽  
Rabab T. Hassanien ◽  
Gehan N. Alagmy ◽  
...  
Keyword(s):  
Skin Disease ◽  
Molecular Detection ◽  
Chorioallantoic Membrane ◽  
Hair Follicles ◽  
Confirmatory Test ◽  
Economic Losses ◽  
Infected Cattle ◽  
Basal Cells ◽  
Lumpy Skin Disease ◽  
Skin Nodule

Background and Aim: Lumpy skin disease (LSD) is a contagious viral disease that has great economic losses among Egyptian breeding flocks. The present study was designed to compare the results of different diagnostic approaches used for the diagnosis of LSD virus (LSDV). Materials and Methods: A total of 73 skin nodule samples were collected from suspected infected cattle with LSDV from some Egyptian governorates during 2019 and 2020. Trials for virus isolation (VI) and identification on embryonated chicken eggs (ECEs) were conducted. Molecular detection, histopathological, and immunohistochemical examination were also conducted. Results: The virus was isolated into ECEs, and 58 samples of 73 were positive and gave a characteristic pock lesion on the chorioallantoic membrane. Twenty-two representative nodular skin specimens of the 58 positive samples were selected to be used for molecular, histopathological, and immunohistochemistry (IHC) diagnosis. Conventional polymerase chain reaction succeeded in detecting LSDV DNA in all tested 22 skin nodule samples. Histological examination of skins of different cases revealed various alterations depending on the stage of infection. IHC was used as a confirmatory test for detecting LSDV antigen in the tissues of the skin nodules of infected cattle using specific anti-LSDV antibodies. Lumpy skin viral antigen was detected within the cytoplasm of the epidermal basal cells layer and prickle cell and within the cytoplasm of the hair follicles' epithelial outer and inner roots. Conclusion: This study confirmed the prevalence of LSDV infection in different Egyptian governorates during 2019 and 2020. In addition, histopathology and IHC could be potential methods to confirm Lumpy skin disease infection besidesVI and molecular detection.

Isolation and molecular identification of Lumpy Skin Disease (LSD) virus from infected cattle in Bangladesh

2020 ◽  
Vol 26 (1-2) ◽  
pp. 15-20
Author(s):  
M Giasuddin ◽  
MA Yousuf ◽  
M Hasan ◽  
MH Rahman ◽  
MZ Hassan ◽  
...  
Keyword(s):  
Skin Disease ◽  
Infected Animal ◽  
Economic Losses ◽  
Infected Cattle ◽  
Lumpy Skin Disease ◽  
Cattle Disease ◽  
Nodular Lesions ◽  
The Many ◽  
First Time ◽  
Ocular Discharge

Lumpy Skin Disease (LSD) is a new disease of cattle in Bangladesh. It is endemic in Africa but through the last few years disease beings to spread to other countries of the world. The disease was widely spreaded in the many other countries in Asia and some parts of Europe. In Bangladesh, the disease was first time detected in April 2019, in southern part and then continued to spread all over the country.The disease caused enormous economic losses causing cutaneous and internal lesions, affecting milk production, hide quality and in some cases death of infected animal. LSD suspected samples were collected from different areas of the country during the period from July 2019 to January 2020. In this study, a total of 36 clinically suspected LSD samples of skin crustnodules, pus and ocular discharge were collected. Samples were examined by the published PCR protocol for LSD virus, GPV and SPV. Around 78% samples were found positive for LSD virus in PCR test. LSD virus was also identified from pus and ocular discharge of infected cattle. The virus can grow in the lamb testicular cell and clinically the disease is characterized by distinctive nodular lesions mostly on the skin of the affected animals.The results indicated that the LSD virus is circulating in the outbreak are as and is an emerging transboundary cattle disease in Bangladesh. Bang. J. Livs. Res. Vol. 26 (1&2), 2019: P. 15-20

scholarly journals Assessment on Economic Losses due to Animal Health and Production Constraints in Jimma Town Intensive Dairy Farms, Jimma, Ethiopia

2020 ◽  
pp. 52-60
Keyword(s):  
Skin Disease ◽  
Animal Health ◽  
Dairy Farms ◽  
Dairy Farming ◽  
Economic Losses ◽  
Financial Loss ◽  
Lumpy Skin Disease ◽  
Production Constraints ◽  
Milk Fever ◽  
Jimma Town

A single-visit-multiple subject formal survey technique was used to collect data from 75 small-scale dairy farming households which were selected at random and were interviewed using a pre-tested, semi-structured questionnaire. Seventy-three (97.3%) dairy farming was practiced under an intensive management system. Among the selected dairy farms, only (33.3%) were kept in good hygienic condition. Artificial insemination was common (69.3%) breeding system practiced in most dairy farms of studying area. This study discovered that only a few dairy farms (2.7%) undergo periodic vaccination. It appeared from the study that morbidity loss of animals was primarily caused by mastitis which calculated (42.7%), black leg (32%), lumpy skin disease (21.3%), milk fever (17.3%), heart water (10.7%) and foot rote (5.3%) in order of their decreasing order. The results of this survey revealed that mastitis was ranked as the number one disease of dairy animals while foot rote was list reported disease in the study area. Morbidity loss of production and productivity was estimated to the financial loss of (812,600 birrs) per year. Not only morbidity loss, in some farms, mortality was also common problems of the study area. Mainly common diseases such as heart water (6.7%), milk fever (5.3%), back leg (2.7%), and lumpy skin disease (1.7%) were major causes of mortality in few farms. This in turn estimated the financial loss of (625,000 birrs). Eventually, overall annual financial loss as a result of mortality and morbidity was estimated to be (1,437,600 birrs). The outbreak of lumpy skin disease and blacklegs could be controlled through improving veterinary services with respect to adequate vaccination and heart water (seasonal tick infestation) would be alleviated by spraying. The aim of the study was to assess assessment on economic losses due to animal health and production constraints in Jimma town intensive dairy farms, Jimma, Ethiopia.

scholarly journals Serum Biochemistry of Lumpy Skin Disease Virus-Infected Cattle

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Murat Şevik ◽  
Oğuzhan Avci ◽  
Müge Doğan ◽  
Ömer Barış İnce
Keyword(s):  
Real Time ◽  
Disease Virus ◽  
Real Time Pcr ◽  
Skin Disease ◽  
Infected Cattle ◽  
Serum Samples ◽  
Lumpy Skin Disease ◽  
Blood Samples ◽  
Lumpy Skin Disease Virus ◽  
Serum Biochemical

Lumpy skin disease is an economically important poxvirus disease of cattle. Vaccination is the main method of control but sporadic outbreaks have been reported in Turkey. This study was carried out to determine the changes in serum biochemical values of cattle naturally infected with lumpy skin disease virus (LSDV). For this study, blood samples in EDTA, serum samples, and nodular skin lesions were obtained from clinically infected animals (n=15) whereas blood samples in EDTA and serum samples were collected from healthy animals (n=15). A quantitative real-time PCR method was used to detectCapripoxvirus(CaPV) DNA in clinical samples. A real-time PCR high-resolution melt assay was performed to genotype CaPVs. Serum cardiac, hepatic, and renal damage markers and lipid metabolism products were measured by autoanalyzer. LSDV nucleic acid was detected in all samples which were obtained from clinically infected cattle. The results of serum biochemical analysis showed that aspartate aminotransferase, alkaline phosphatase, total protein, and creatinine concentrations were markedly increased in serum from infected animals. However, there were no significant differences in the other biochemical parameters evaluated. The results of the current study suggest that liver and kidney failures occur during LSDV infection. These findings may help in developing effective treatment strategies in LSDV infection.

scholarly journals Mapping changes in the spatiotemporal distribution of lumpy skin disease virus

2019 ◽  
Author(s):  
G. Machado ◽  
F. Korennoy ◽  
J. Alvarez ◽  
C. Picasso-Risso ◽  
A. Perez ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Disease Virus ◽  
Skin Disease ◽  
Spatiotemporal Distribution ◽  
Rapid Expansion ◽  
Disease Spread ◽  
Economic Losses ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus ◽  
Increased Risk

SummaryLumpy skin disease virus (LSDV) is an infectious disease of cattle transmitted by arthropod vectors which results in substantial economic losses due to impact on production efficiency and profitability, and represents an emerging threat to international trade of livestock products and live animals. Since 2015, the disease has spread across many Eastern European countries as well as Russia and Kazakhstan. This rapid expansion highlights the emergent nature of the virus in more temperate regions than those in which LSDV traditionally occurred. The goal of this study was to assess the risk for further LSDV spread in Eurasia through a) analysis of environmental factors conducive for LSDV and b) estimate of the underlying LSDV risk using a fine spatiotemporally explicit Bayesian hierarchical model on LSDV outbreak occurrence information. We used ecological niche modeling to estimate the potential distribution of LSDV outbreaks for 2014-2016. This analysis resulted in a spatial representation of environmental limits where, if introduced, LSDV is expected to efficiently spread. The Bayesian space-time model incorporated both environmental factors and the changing spatiotemporal distribution of the disease to capture the dynamics of disease spread and predict areas in which there is an increased risk of LSDV occurrence. Variables related to the average temperature, precipitation, wind speed, as well as land cover and host densities were found to be important drivers explaining the observed distribution of LSDV in both modeling approaches. Areas of elevated LSDV risks were identified mainly in Russia, Turkey, Serbia, and Bulgaria. Results suggest that prevailing ecological conditions may be compatible with further spread of LSDV in Eurasia, though models should be continually updated to reflect the current epidemiologic conditions. The results presented here advance our understanding of the ecological requirements of LSDV in temperate regions and may help in the design and implementation of prevention and surveillance strategies in the region.

scholarly journals Estimating Economic Burden and Factors Perceived to Be Associated With Lumpy Skin Disease in Cattle in Namisindwa District, Eastern Uganda

2020 ◽  
Author(s):  
Isaac Ongom ◽  
Steven Odongo ◽  
Aggrey Siya ◽  
Francis Ejobi
Keyword(s):  
Risk Factors ◽  
Economic Impact ◽  
Skin Disease ◽  
Perceived Risk ◽  
Economic Losses ◽  
P Value ◽  
Power Performance ◽  
Veterinary Services ◽  
Lumpy Skin Disease ◽  
Cattle Herds

Abstract BackgroundGlobally, livestock contributes about 40% of agricultural output sustaining livelihoods and food security of almost a billion people. In Uganda, livestock contributes 5.2% and 12.7% to the total national GDP and agricultural GDP, respectively. In districts like Namisindwa, diseases like Lumpy Skin Disease (LSD) affect the sector undermining its trade and production. Studies on the economic impact and risk factors have not been undertaken in such areas. This study thus sought to unravel information regarding economic impact and perceived risk factors associated with LSD in Namisindwa district. A cross sectional study involving quantitative approaches was employed in this study. Dependent variables were period prevalence and associated economic losses due effect of LSD on cattle herds while independent variable were potential factors influencing spread of the disease among cattle herds. The financial impact assessment was based on the farmers’ calendar year. Results The total economic losses incurred by farmers in Namisindwa district in a single outbreak of LSD was estimated at UGX 574,999,741 (USD 155,405). The most prominent economic loss due to LSD was attributed to low milk yield in lactating cattle as well as poor draught power performance. Other major contributions to economic losses due to LSD after the aforementioned two factors were cost of veterinary services and mortalities of cattle. Economic losses associated with loss of calves, and skin losses were perceived to be the lowest. Introduction of new animals, communal grazing and access to veterinary services were significantly associated with outbreaks of Lumpy Skin Disease. Specifically, farmers with access to veterinary services were less likely to be affected with the rampant spread of the LSD in their cattle, OR = .03361 and P-value < .05. Conclusion There is need for Ministry of Agriculture, Animal Industry and Fisheries in Uganda to advance interventions for prevention and control of LSD in the district. Larger scale and rigorous studies ought to be undertaken also to understand the risk factors and economic impact of LSD outbreaks.

scholarly journals Occurrences of Lumpy Skin Disease (LSD) in Cattle in Dinajpur Sadar of Bangladesh

2020 ◽  
Vol 7 (3) ◽  
pp. 445-455
Author(s):  
Sumon Sarkar ◽  
Mirza Mienur Meher ◽  
Mst Misrat Masuma Parvez ◽  
Mahfuza Akther
Keyword(s):  
Skin Disease ◽  
Viral Disease ◽  
Skin Lesions ◽  
Young Female ◽  
Whole Body ◽  
Economic Losses ◽  
Local Breed ◽  
Lumpy Skin Disease ◽  
Herd Level ◽  
Level Information

Lumpy skin disease (LSD) is an acute viral disease infectious of cattle and recently emerged very common in Bangladesh causing economic losses. Hence, this study was design to investigate the prevalence of LSD in considering the herd level and some of management status. Thus, a total of 453 sick animals were subjected to study during the period of April 2020 to July 2020 in Dinajpur. LSD was confirmed according to the clinical inspection and microscopic study of skin scraping. The results indicated that the overall prevalence of LSD was 41.06% in cattle. Moreover, the local breed (75%) and young cattle less than one year (64%) were significantly (p<0.001) higher for LSD with the significant (p<0.001) skin lesions in whole body (44%). In addition, the animal grazed in flock (61%), non-dewormed (58%), non-vaccinated (61%) was significantly (p<0.05) higher for LSD. In the same way, 75% prevalence was in without fly repellent (p<0.001). Afterward, the univariate logistic regression in herd level information had the odd ratio of local breed (95% CI: 0.244-0.553), skin lesions in abdominal regions (95% CI: 1.620-5.923) and pregnant cattle (95% CI: 1.057-3.386) was 0.367, 3.098 and 1.892 respectively indicated the likelihood of no LSD outbreaks. Besides this, the odd ratio of dewormed cattle, vaccinated, individually grazed, regular use of disinfectant and fly repellent farm animal was 1.493 (95% CI:1.024-2.177), 1.491 (95% CI:1.020-2.180), 1.656 (95% CI:1.133-2.421), 1.516 (95% CI:0.952-2.414) and 1.660 (95% CI:1.097-2.513), respectively indicated the likelihood of no LSD. Therefore, LSD infection can be greatly reduced by practicing regular vaccination, deworming, and disinfection, vector controlling and allowing grazing individually, especially with great concern to young female cattle of local breed. Res. Agric., Livest. Fish.7(3): 445-455,  December 2020

scholarly journals Mechanical transmission of lumpy skin disease virus by Aedes aegypti (Diptera: Culicidae)

2001 ◽  
Vol 126 (2) ◽  
pp. 317-321 ◽  
Author(s):  
C. M. CHIHOTA ◽  
L. F. RENNIE ◽  
R. P. KITCHING ◽  
P. S. MELLOR
Keyword(s):  
Aedes Aegypti ◽  
Disease Virus ◽  
Skin Disease ◽  
Mosquito Species ◽  
Clinical Disease ◽  
Mechanical Transmission ◽  
Infected Cattle ◽  
Lumpy Skin Disease ◽  
Lumpy Skin Disease Virus

Aedes aegypti female mosquitoes are capable of the mechanical transmission of lumpy skin disease virus (LSDV) from infected to susceptible cattle. Mosquitoes that had fed upon lesions of LSDV-infected cattle were able to transmit virus to susceptible cattle over a period of 2–6 days post-infective feeding. Virus was isolated from the recipient animals in 5 out of 7 cases. The clinical disease recorded in the animals exposed to infected mosquitoes was generally of a mild nature, with only one case being moderate. LSDV has long been suspected to be insect transmitted, but these findings are the first to demonstrate this unequivocally, and they suggest that mosquito species are competent vectors.

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