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Opriessnig T, Halbur P, Bayne J, Rawal G, Tong H, Mou K, Li G, Zhang D, Zhang J, Muwonge A. Exploratory application of a cannulation model in recently weaned pigs to monitor longitudinal changes in the enteric microbiome across varied porcine reproductive and respiratory syndrome virus (PRRSV) infection statuses. Front Vet Sci 2024; 11:1422012. [PMID: 39100768 PMCID: PMC11294941 DOI: 10.3389/fvets.2024.1422012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 06/17/2024] [Indexed: 08/06/2024] Open
Abstract
Introduction The enteric microbiome and its possible modulation to improve feed conversion or vaccine efficacy is gaining more attention in pigs. Weaning pigs from their dam, along with many routine procedures, is stressful. A better understanding of the impact of this process on the microbiome may be important for improving pig production. The objective of this study was to develop a weaner pig cannulation model, thus allowing ileum content collection from the same pig over time for 16S rRNA sequencing under different porcine reproductive and respiratory syndrome virus (PRRSV) infection statuses. Methods A total of 15 3-week-old pigs underwent abdominal surgery and were fitted with an ileum cannula, with ileum contents collected over time. In this pilot study, treatment groups included a NEG-CONTROL group (no vaccination, no PRRSV challenge), a POS-CONTROL group (no vaccination, challenged with PRRSV), a VAC-PRRSV group (vaccinated, challenged with PRRSV), a VAC-PRO-PRRSV group (vaccinated, supplemented with a probiotic, challenged with PRRSV), and a VAC-ANTI-PRRSV group (vaccinated, administered an antibiotic, challenged with PRRSV). We assessed the microbiome over time and measured anti-PRRSV serum antibodies, PRRSV load in serum and nasal samples, and the severity of lung lesions. Results Vaccination was protective against PRRSV challenge, irrespective of other treatments. All vaccinated pigs mounted an immune response to PRRSV within 1 week after vaccination. A discernible impact of treatment on the diversity, structure, and taxonomic abundance of the enteric microbiome among the groups was not observed. Instead, significant influences on the ileum microbiome were observed in relation to time and treatment. Discussion The cannulation model described in this pilot study has the potential to be useful in studying the impact of weaning, vaccination, disease challenge, and antimicrobial administration on the enteric microbiome and its impact on pig health and production. Remarkably, despite the cannulation procedures, all vaccinated pigs exhibited robust immune responses and remained protected against PRRSV challenge, as evidenced by the development of anti-PRRSV serum antibodies and viral shedding data.
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Affiliation(s)
- Tanja Opriessnig
- Department of Vaccines and Diagnostics, Moredun Research Institute, Penicuik, United Kingdom
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Patrick Halbur
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Jenna Bayne
- Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL, United States
| | - Gaurav Rawal
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Hao Tong
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Kathy Mou
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Ganwu Li
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Danyang Zhang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Jianqiang Zhang
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Adrian Muwonge
- The Digital One Health Laboratory, Roslin Institute and The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, United Kingdom
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Trudeau MP, Mosher W, Tran H, de Rodas B, Karnezos TP, Urriola PE, Gomez A, Saqui-Salces M, Chen C, Shurson GC. Growth Performance, Metabolomics, and Microbiome Responses of Weaned Pigs Fed Diets Containing Growth-Promoting Antibiotics and Various Feed Additives. Animals (Basel) 2023; 14:60. [PMID: 38200791 PMCID: PMC10778031 DOI: 10.3390/ani14010060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
The objective of this study was to determine the potential biological mechanisms of improved growth performance associated with potential changes in the metabolic profiles and intestinal microbiome composition of weaned pigs fed various feed additives. Three separate 42 day experiments were conducted to evaluate the following dietary treatments: chlortetracycline and sulfamethazine (PC), herbal blends, turmeric, garlic, bitter orange extract, sweet orange extract, volatile and semi-volatile milk-derived substances, yeast nucleotide, and cell wall products, compared with feeding a non-supplemented diet (NC). In all three experiments, only pigs fed PC had improved (p < 0.05) ADG and ADFI compared with pigs fed NC. No differences in metabolome and microbiome responses were observed between feed additive treatments and NC. None of the feed additives affected alpha or beta microbiome diversity in the ileum and cecum, but the abundance of specific bacterial taxa was affected by some dietary treatments. Except for feeding antibiotics, none of the other feed additives were effective in improving growth performance or significantly altering the metabolomic profiles, but some additives (e.g., herbal blends and garlic) increased (p < 0.05) the relative abundance of potentially protective bacterial genera that may be beneficial during disease challenge in weaned pigs.
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Affiliation(s)
- Michaela P. Trudeau
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA; (M.P.T.); (P.E.U.); (A.G.); (M.S.-S.)
| | - Wes Mosher
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, USA; (W.M.); (C.C.)
| | - Huyen Tran
- Purina Animal Nutrition, Gray Summit, MO 63039, USA; (H.T.); (B.d.R.); (T.P.K.)
| | - Brenda de Rodas
- Purina Animal Nutrition, Gray Summit, MO 63039, USA; (H.T.); (B.d.R.); (T.P.K.)
| | | | - Pedro E. Urriola
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA; (M.P.T.); (P.E.U.); (A.G.); (M.S.-S.)
| | - Andres Gomez
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA; (M.P.T.); (P.E.U.); (A.G.); (M.S.-S.)
| | - Milena Saqui-Salces
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA; (M.P.T.); (P.E.U.); (A.G.); (M.S.-S.)
| | - Chi Chen
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, USA; (W.M.); (C.C.)
| | - Gerald C. Shurson
- Department of Animal Science, University of Minnesota, St. Paul, MN 55108, USA; (M.P.T.); (P.E.U.); (A.G.); (M.S.-S.)
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