PMID- 38274655 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240128 IS - 2297-1769 (Print) IS - 2297-1769 (Electronic) IS - 2297-1769 (Linking) VI - 10 DP - 2023 TI - Utilizing productivity and health breeding-to-market information along with disease diagnostic data to identify pig mortality risk factors in a U.S. swine production system. PG - 1301392 LID - 10.3389/fvets.2023.1301392 [doi] LID - 1301392 AB - Aggregated diagnostic data collected over time from swine production systems is an important data source to investigate swine productivity and health, especially when combined with records concerning the pre-weaning and post-weaning phases of production. The combination of multiple data streams collected over the lifetime of the pigs is the essence of the whole-herd epidemiological investigation. This approach is particularly valuable for investigating the multifaceted and ever-changing factors contributing to wean-to-finish (W2F) swine mortality. The objective of this study was to use a retrospective dataset ("master table") containing information on 1,742 groups of pigs marketed over time to identify the major risk factors associated with W2F mortality. The master table was built by combining historical breed-to-market performance and health data with disease diagnostic records (Dx Codes) from marketed groups of growing pigs. After building the master table, univariate analyses were conducted to screen for risk factors to be included in the initial multivariable model. After a stepwise backward model selection approach, 5 variables and 2 interactions remained in the final model. Notably, the diagnosis variable significantly associated with W2F mortality was porcine reproductive and respiratory syndrome virus (PRRSV). Closeouts with clinical signs suggestive of Salmonella spp. or Escherichia coli infection were also associated with higher W2F mortality. Source sow farm factors that remained significantly associated with W2F mortality were the sow farm PRRS status, average weaning age, and the average pre-weaning mortality. After testing for the possible interactions in the final model, two interactions were significantly associated with wean-to-finish pig mortality: (1) sow farm PRRS status and a laboratory diagnosis of PRRSV and (2) average weaning age and a laboratory diagnosis of PRRS. Closeouts originating from PRRS epidemic or PRRS negative sow farms, when diagnosed with PRRS in the growing phase, had the highest W2F mortality rates. Likewise, PRRS diagnosis in the growing phase was an important factor in mortality, regardless of the average weaning age of the closeouts. Overall, this study demonstrated the utility of a whole-herd approach when analyzing diagnostic information along with breeding-to-market productivity and health information, to measure the major risk factors associated with W2F mortality in specified time frames and pig populations. CI - Copyright (c) 2024 Magalhaes, Zimmerman, Thomas, Moura, Trevisan, Schwartz, Burrough, Holtkamp, Wang, Rademacher, Silva and Linhares. FAU - Magalhaes, Edison S AU - Magalhaes ES AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Zimmerman, Jeff J AU - Zimmerman JJ AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Thomas, Pete AU - Thomas P AD - Iowa Select Farms, Iowa Falls, IA, United States. FAU - Moura, Cesar A A AU - Moura CAA AD - Iowa Select Farms, Iowa Falls, IA, United States. FAU - Trevisan, Giovani AU - Trevisan G AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Schwartz, Kent J AU - Schwartz KJ AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Burrough, Eric AU - Burrough E AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Holtkamp, Derald J AU - Holtkamp DJ AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Wang, Chong AU - Wang C AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. AD - Department of Statistics, College of Liberal Arts and Sciences, Iowa State University, Ames, IA, United States. FAU - Rademacher, Christopher J AU - Rademacher CJ AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Silva, Gustavo S AU - Silva GS AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. FAU - Linhares, Daniel C L AU - Linhares DCL AD - Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States. LA - eng PT - Journal Article DEP - 20240111 PL - Switzerland TA - Front Vet Sci JT - Frontiers in veterinary science JID - 101666658 PMC - PMC10808511 OTO - NOTNLM OT - diagnostic data OT - mortality OT - risk factors OT - swine OT - wean-to-finish COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision. EDAT- 2024/01/26 06:43 MHDA- 2024/01/26 06:44 PMCR- 2023/01/01 CRDT- 2024/01/26 03:57 PHST- 2023/09/24 00:00 [received] PHST- 2023/11/29 00:00 [accepted] PHST- 2024/01/26 06:44 [medline] PHST- 2024/01/26 06:43 [pubmed] PHST- 2024/01/26 03:57 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fvets.2023.1301392 [doi] PST - epublish SO - Front Vet Sci. 2024 Jan 11;10:1301392. doi: 10.3389/fvets.2023.1301392. eCollection 2023.