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Seroprevalence of bovine leukemia virus in cattle, buffalo, and camel in Egypt

机译：在牛，水牛和骆驼的牛白血病病毒的血清透刻性

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Bovine leukemia virus (BLV) is the causative agent of enzootic bovine leukosis. It causes significant economic losses associated with losses due to slaughter and eradication of infected animal from infected area and other indirect economic losses such as restriction on importation of animals and semen from infected area. The main objective of this study was to determine the seroprevalence of BLV antibodies in cattle, buffaloes, and camels in Egypt using ELISA test. Serum samples were collected from 350 cattle, 100 buffaloes, and 100 camels during 2018. The seropositivity for BLV-specific antibody was 20.8%, 9%, and 0% in cattle, buffaloes, and camels, respectively. The result revealed significant association (p < 0.05) between age and seroprevalence of BLV infection in cattle > 4 years (24%) compared with those < 4 years (13%). We found no significant association between pregnancy and herd size and seroprevalence of BLV infection in this study (p > 0.05). Furthermore, the age, pregnancy state, and herd size had significant effect on seroprevalence of BLV infection in buffaloes. This study contributes that BLV is detected in cattle and buffaloes in Egypt and confirms that the camels has resistance against BLV infection. Hence, the control measures are very necessary to combat the transmission of the disease and reduce its economic impact.
机译：牛白血病病毒（BLV）是Enozootic牛白血病的致病剂。由于屠宰和消除来自受感染的地区的感染动物和其他间接经济损失，导致与感染的动物的损失有关的严重经济损失，例如限制动物和来自受感染的地区的精液。本研究的主要目的是使用ELISA试验确定牛，水牛和骆驼中BLV抗体的SEROPREVALING。从350次牛，100次水牛和100座骆驼收集血清样品。牛，水牛和骆驼的BLV特异性抗体的血清阳性为20.8％，9％和0％。结果显示，与那些<4岁（13％）相比，BLV感染的年龄和SEROPREVALING之间的显着关联（P <0.05）和SEROPREVALING。在本研究中发现怀孕和群体大小与BLV感染的SEROPREVALING之间没有显着关联（P> 0.05）。此外，年龄，妊娠州和畜群大小对水牛的BLV感染的血清伪装有显着影响。该研究有助于在埃及的牛和水牛中检测到BLV，并确认骆驼对BLV感染抵抗。因此，对抗疾病的传播并减少其经济影响是非常有必要的控制措施。

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