Detection of bovine leukemia virus in blood and milk by nested and real-time polymerase chain reactions.
Concerns about retroviruses in livestock and products derived from them have necessitated the development of tests to detect the bovine leukemia virus (BLV) in blood and milk from cattle. Dairy cattle (n = 101) from 5 different geographical areas were used for this study. A nested polymerase chain reaction (PCR) identified 98% of BLV seropositive cattle (n = 80) from blood and 65% from milk, whereas real-time PCR detected 94% of BLV seropositive cattle from blood and 59% from milk. Bovine leukemia virus was also detected by PCR in approximately 10% of seronegative cattle (n = 21), most likely because of early detection before seroconversion.
Kuckleburg
Christopher J
CJ
Department of Veterinary Science, South Dakota State University, Brookings, SD 57007, USA.
Chase
Christopher C
CC
Nelson
Eric A
EA
Marras
Salvatore A E
SA
Dammen
Matthew A
MA
Christopher-Hennings
Jane
J
D000818:Animals; D001769:Blood / Q000821:virology*; D002417:Cattle; D016583:Enzootic Bovine Leukosis / Q000175:diagnosis* / Q000821:virology*; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005814:Genes, Viral; D001909:Leukemia Virus, Bovine / Q000235:genetics* / Q000302:isolation & purification*; D008892:Milk / Q000821:virology*; D016133:Polymerase Chain Reaction / Q000379:methods*; D012680:Sensitivity and Specificity