Molecular detection of coronavirus causing infectious bronchitis in laying hens with cystic oviduct and quantitative and qualitative reduction of egg production

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Jalahi M.; GHOLAMI AHANGARAN M.

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Paper Information

Journal: JOURNAL OF ANIMAL PHYSIOLOGY AND DEVELOPMENT (QUARTERLY JOURNAL OF BIOLOGICAL SCIENCES) Year:2021 | Volume:14 | Issue:2 (53) Page(s): 77-89

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Title

Molecular detection of coronavirus causing infectious bronchitis in laying hens with cystic oviduct and quantitative and qualitative reduction of egg production

Author(s)

Jalahi M. | GHOLAMI AHANGARAN M. | Issue Writer Certificate

Keywords

Cystic oviductQ1

Syndrome of reduction in quantitative and qualitative of egg productionQ1

Infectious bronchitisQ1

IsfahanQ3

Abstract

Inroduction & Objective: The Syndrome of reduction in quantitative and qualitative of egg production in layers has many infectious and non-infectious causes, but this condition is usually attributed to coronavirus, the cause of Infectious bronchitis. In this study, the contribution of Infectious bronchitis coronavirus in this syndrome was investigated. Material and Method: From spring 2019 to spring 2020, 9 laying hen flocks with a history of reduction in quantitative and qualitative of egg production and 10 laying farms with a healthy appearance were sampled. In addition, 6 farms with Cystic oviduct were sampled in laying hens in Isfahan province. After extracting the genome, a fragment of 1200 bp of coronavirus S1 gene was amplified for identification of Infectious bronchitis virus. Results: Out of 9 laying farms with Syndrome of reduction in quantitative and qualitative of egg production and 10 apparently healthy farms, respectively 7 and 4 farms (78 and 40%), based on at least one positive sample, were infected with Infectious bronchitis coronavirus. Out of 59 samples from farms with egg reduction syndrome, 32 samples (54. 2%) and from 66 samples taken from apparently healthy farms, 7 samples (10. 6%) were evaluated positively for Infectious bronchitis coronavirus. In this study, all 6 farms with Cystic oviduct had at least one positive sample for Infectious bronchitis coronavirus and 31 samples out of a total of 41 samples (73. 17%) infected with Infectious bronchitis coronavirus. Conclusion: Infectious bronchitis coronavirus has a high share in the Syndrome of reduction in quantitative and qualitative of egg production in laying hens, but not all cases can be attributed to this virus and other infectious and nutritional factors should be monitored. Due to the high frequency of this virus in cases of Cystic oviduct, it is necessary to identify the viral types that induce this disorder and develop an appropriate control program.

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APA: Copy

Jalahi, M., & GHOLAMI AHANGARAN, M.. (2021). Molecular detection of coronavirus causing infectious bronchitis in laying hens with cystic oviduct and quantitative and qualitative reduction of egg production. JOURNAL OF ANIMAL PHYSIOLOGY AND DEVELOPMENT (QUARTERLY JOURNAL OF BIOLOGICAL SCIENCES), 14(2 (53) ), 77-89. SID. https://sid.ir/paper/410696/en

Vancouver: Copy

Jalahi M., GHOLAMI AHANGARAN M.. Molecular detection of coronavirus causing infectious bronchitis in laying hens with cystic oviduct and quantitative and qualitative reduction of egg production. JOURNAL OF ANIMAL PHYSIOLOGY AND DEVELOPMENT (QUARTERLY JOURNAL OF BIOLOGICAL SCIENCES)[Internet]. 2021;14(2 (53) ):77-89. Available from: https://sid.ir/paper/410696/en

IEEE: Copy

M. Jalahi, and M. GHOLAMI AHANGARAN, “Molecular detection of coronavirus causing infectious bronchitis in laying hens with cystic oviduct and quantitative and qualitative reduction of egg production,” JOURNAL OF ANIMAL PHYSIOLOGY AND DEVELOPMENT (QUARTERLY JOURNAL OF BIOLOGICAL SCIENCES), vol. 14, no. 2 (53) , pp. 77–89, 2021, [Online]. Available: https://sid.ir/paper/410696/en

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