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Dai M, Feng M, Xie T, Li Y, Zhang X. Fluctuations in luteinizing hormone, follicle stimulating hormone, and progesterone might affect the disappearance of avian leukosis virus subgroup J viremia in chickens with intermittent viremia. Poult Sci 2019; 98:3533-3538. [PMID: 31002116 DOI: 10.3382/ps/pez195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 03/22/2019] [Indexed: 11/20/2022] Open
Abstract
Avian leukosis virus subgroup J (ALV-J) belongs to α-retrovirus genus of retroviridae, causing neoplastic disease, immunosuppression, and other problems in the poultry industry worldwide. The aim of this study was to determine whether the reproductive hormone fluctuation affect the ALV-J viremia at the early egg-laying phase in chicken. Total 8 suspected ALV-J-infected Chinese yellow chickens in the early egg-laying phase were collected from 2 different farms, and further confirmed by PCR and immunofluorescence assay. Plasma samples were collected from experimental chickens for 5 to 10 consecutive weeks at a settled time in each week. ALV-J viremia and reproductive hormone levels were monitored by ELISA or radioimmunoassay. The results showed that fluctuations in luteinizing hormone (LH), follicle stimulating hormone (FSH), and progesterone might have an impact on the disappearance of ALV-J viremia in chickens with intermittent viremia, but not in chickens with persistent viremia. These results suggest that reproductive hormone changes during the early egg-laying phase will affect the detection of positive ALV-J-infected chickens in the ALV-J eradication procedures.
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Affiliation(s)
- Manman Dai
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Min Feng
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - Tingting Xie
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.,Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou, 510642, China
| | - Yuanfang Li
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.,Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou, 510642, China
| | - Xiquan Zhang
- Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.,Key Lab of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou, 510642, China
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