Stedman N L, Brown T P
Department of Avian Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602-4875, USA.
Avian Dis. 1999 Jul-Sep;43(3):604-10.
Broiler progeny were hatched from avian leukosis virus (ALV)-negative and ALV subgroup J (ALV-J)-positive breeders. ALV-J infection in progeny was identified by p27 antigen capture enzyme-linked immunosorbent assay and reverse transcriptase-polymerase chain reaction specific for ALV-J performed on serum or plasma samples obtained at hatch. Hatch weights did not differ between ALV-negative broilers and ALV-J-positive broilers. Body weights of ALV-J-positive broilers were 64.4% of those of ALV-negative broilers at 1 wk of age. At 8 wk of age, weights of broilers with congenital ALV-J infection were still only 63.8% of those of ALV-negative broilers. No other concurrent pathogen was detected in either group of broilers. These findings indicate that congenital ALV-J infection is associated with significant weight suppression in broilers in the absence of other pathogens.
肉鸡后代由禽白血病病毒（ALV）阴性且J亚群禽白血病病毒（ALV-J）阳性的种鸡孵化而来。通过对孵化时采集的血清或血浆样本进行p27抗原捕获酶联免疫吸附测定以及针对ALV-J的逆转录-聚合酶链反应，鉴定后代中的ALV-J感染情况。ALV阴性肉鸡和ALV-J阳性肉鸡的出雏重没有差异。1周龄时，ALV-J阳性肉鸡的体重仅为ALV阴性肉鸡体重的64.4%。8周龄时，先天性ALV-J感染肉鸡的体重仍仅为ALV阴性肉鸡体重的63.8%。两组肉鸡均未检测到其他并发病原体。这些发现表明，在没有其他病原体的情况下，先天性ALV-J感染与肉鸡体重显著受抑有关。
