PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach
It is well established that PRRSV elimination is an effective strategy for PRRS control, but published reports concerning successful PRRSV elimination cases in farrow-to-finishing herds are rare. Here, we have reported a successful PRRSV elimination case in a farrow-to-finish herd by employing a “he...
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MDPI AG
2023-05-01
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| Series: | Viruses |
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| Online Access: | https://www.mdpi.com/1999-4915/15/6/1239 |
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| author | Ruiming Hu Tiansheng Zhang Rongbin Lai Zhen Ding Yu Zhuang Hao Liu Huabin Cao Xiaona Gao Junrong Luo Zheng Chen Caiying Zhang Ping Liu Xiaoquan Guo Guoliang Hu Nengshui Ding Shunzhou Deng |
| author_facet | Ruiming Hu Tiansheng Zhang Rongbin Lai Zhen Ding Yu Zhuang Hao Liu Huabin Cao Xiaona Gao Junrong Luo Zheng Chen Caiying Zhang Ping Liu Xiaoquan Guo Guoliang Hu Nengshui Ding Shunzhou Deng |
| author_sort | Ruiming Hu |
| collection | DOAJ |
| description | It is well established that PRRSV elimination is an effective strategy for PRRS control, but published reports concerning successful PRRSV elimination cases in farrow-to-finishing herds are rare. Here, we have reported a successful PRRSV elimination case in a farrow-to-finish herd by employing a “herd closure and rollover” approach with some modifications. Briefly, the introduction of pigs to the herd was stopped and normal production processes were maintained until the herd reached a PRRSV provisional negative status. During the herd closure, strict biosecurity protocols were implemented to prevent transmission between nursery pigs and sows. In the current case, introducing gilts before herd closure and live PRRSV exposure were skipped. In the 23rd week post-outbreak, the pre-weaning piglets started to show 100% PRRSV negativity in qPCR tests. In the 27th week, nursery and fattening barns fully launched depopulation. In the 28th week, nursery and fattening houses reopened and sentinel gilts were introduced into gestation barns. Sixty days post-sentinel gilt introduction, the sentinel pigs maintained being PRRSV antibody negative, manifesting that the herd matched the standard of the provisional negative status. The production performance of the herd took 5 months to bounce back to normal. Overall, the current study provided additional information for PRRSV elimination in farrow-to-finish pig herds. |
| first_indexed | 2024-03-11T01:49:41Z |
| format | Article |
| id | doaj.art-0987787f6a254ff6b86c8d83d91f72e1 |
| institution | Directory Open Access Journal |
| issn | 1999-4915 |
| language | English |
| last_indexed | 2024-03-11T01:49:41Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Viruses |
| spelling | doaj.art-0987787f6a254ff6b86c8d83d91f72e12023-11-18T13:00:56ZengMDPI AGViruses1999-49152023-05-01156123910.3390/v15061239PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover ApproachRuiming Hu0Tiansheng Zhang1Rongbin Lai2Zhen Ding3Yu Zhuang4Hao Liu5Huabin Cao6Xiaona Gao7Junrong Luo8Zheng Chen9Caiying Zhang10Ping Liu11Xiaoquan Guo12Guoliang Hu13Nengshui Ding14Shunzhou Deng15Department of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaKey Laboratory of Swine Nutrition and Feed Science of Fujian Province, Aonong Group, Zhangzhou 363000, ChinaKey Laboratory of Swine Nutrition and Feed Science of Fujian Province, Aonong Group, Zhangzhou 363000, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaDepartment of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, ChinaIt is well established that PRRSV elimination is an effective strategy for PRRS control, but published reports concerning successful PRRSV elimination cases in farrow-to-finishing herds are rare. Here, we have reported a successful PRRSV elimination case in a farrow-to-finish herd by employing a “herd closure and rollover” approach with some modifications. Briefly, the introduction of pigs to the herd was stopped and normal production processes were maintained until the herd reached a PRRSV provisional negative status. During the herd closure, strict biosecurity protocols were implemented to prevent transmission between nursery pigs and sows. In the current case, introducing gilts before herd closure and live PRRSV exposure were skipped. In the 23rd week post-outbreak, the pre-weaning piglets started to show 100% PRRSV negativity in qPCR tests. In the 27th week, nursery and fattening barns fully launched depopulation. In the 28th week, nursery and fattening houses reopened and sentinel gilts were introduced into gestation barns. Sixty days post-sentinel gilt introduction, the sentinel pigs maintained being PRRSV antibody negative, manifesting that the herd matched the standard of the provisional negative status. The production performance of the herd took 5 months to bounce back to normal. Overall, the current study provided additional information for PRRSV elimination in farrow-to-finish pig herds.https://www.mdpi.com/1999-4915/15/6/1239PRRSVeliminationfarrow-to-finish |
| spellingShingle | Ruiming Hu Tiansheng Zhang Rongbin Lai Zhen Ding Yu Zhuang Hao Liu Huabin Cao Xiaona Gao Junrong Luo Zheng Chen Caiying Zhang Ping Liu Xiaoquan Guo Guoliang Hu Nengshui Ding Shunzhou Deng PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach Viruses PRRSV elimination farrow-to-finish |
| title | PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach |
| title_full | PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach |
| title_fullStr | PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach |
| title_full_unstemmed | PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach |
| title_short | PRRSV Elimination in a Farrow-to-Finish Pig Herd Using Herd Closure and Rollover Approach |
| title_sort | prrsv elimination in a farrow to finish pig herd using herd closure and rollover approach |
| topic | PRRSV elimination farrow-to-finish |
| url | https://www.mdpi.com/1999-4915/15/6/1239 |
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