Causes of Sow Mortality and Risks to Post-Mortem Findings in a Brazilian Intensive Swine Production System.

Autor: Monteiro MS; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil., Matias DN; Department of Veterinary Medicine, School of Animal Science and Veterinary Medicine, Federal University of Lavras, Lavras 37200-000, MG, Brazil., Poor AP; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil.; Phibro Animal Health Corporation-Av. Pres. Tancredo de Almeida Neves, 1063, São Paulo 071112-070, SP, Brazil., Dutra MC; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil., Moreno LZ; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil.; Phibro Animal Health Corporation-Av. Pres. Tancredo de Almeida Neves, 1063, São Paulo 071112-070, SP, Brazil., Parra BM; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil., Silva APS; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil., Matajira CEC; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil.; Faculty of Basic Science, Universidad Santiago de Cali, Calle 5 #62-00, Cali 4102, Colombia., de Moura Gomes VT; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil., Barbosa MRF; Environmental Company of the State of São Paulo (CETESB), Av. Prof. Frederico Hermann Júnior 345, São Paulo 05459-900, SP, Brazil., Sato MIZ; Environmental Company of the State of São Paulo (CETESB), Av. Prof. Frederico Hermann Júnior 345, São Paulo 05459-900, SP, Brazil., Moreno AM; Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, SP, Brazil.
Jazyk: angličtina
Zdroj: Animals : an open access journal from MDPI [Animals (Basel)] 2022 Jul 14; Vol. 12 (14). Date of Electronic Publication: 2022 Jul 14.
DOI: 10.3390/ani12141804
Abstrakt: The present study was conducted to investigate the risk factors for post-mortem findings and causes of sow mortality. A post-mortem examination and microbiological investigation were conducted on 123 sows from a breeding herd with 15,000 dams. The mortality of spontaneous death in sows occurred mostly in the peripartum period (53%; p < 0.05). The spontaneous deaths were associated with heart failures, hemorrhagic and perforating gastric ulcers, and liver torsion, while in the euthanized sows, the post-mortem findings were associated with locomotor disorders. A higher body condition score (BCS ≥ 3.5) increased (p < 0.05) heart failure on the post-mortem examination. The excessive use of manual obstetric interventions increased sow deaths resulting from cervix/uterus ruptures and increased the odds of death (p < 0.05) due to metritis. Sow mortality had a multifactorial etiology. Infections were polymicrobial. The main microbial agents identified from a septic lesion in locomotor, genitourinary, and respiratory systems were Trueperella pyogenes, Escherichia coli, and Actinobacillus pleuropneumoniae, respectively. In conclusion, sow mortality involved multiple risk factors and several bacterial agents. These results indicate that better management practices can reduce sow mortality in swine production and increase sow welfare.
Databáze: MEDLINE
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