Silva Gustavo Sousa, da Costa Lana Marconni Victor, Dias Geovanny Bruno Gonçalves, da Cruz Raquel Aparecida Sales, Lopes Leticya Lerner, Machado Gustavo, Corbellini Luis Gustavo, Gava Danielle, Souza Marcos Almeida, Pescador Caroline Argenta
Laboratório de Patologia Veterinária, Universidade Federal de Mato Grosso (UFMT), Av. Fernando Corrêa da Costa 2367, CEP 78069-900, Cuiabá, Mato Grosso, Brazil.
Trop Anim Health Prod. 2015 Feb;47(2):445-9. doi: 10.1007/s11250-014-0745-8. Epub 2014 Dec 17.
Reproductive failure in swine herds is often difficult to diagnose and is important to swine production. The present study aims to identify the potential risk factors (infectious/noninfectious) for stillborn piglets in two commercial swine farms situated in midwestern region of Brazil. The potential risk factors were included in a multivariable logistic model, and the dependent variable was defined as the presence of at least one stillborn piglet in a given litter (yes or no). In the best fit model, two variables from the multivariable analysis, total litter size (p = 0.01), and average birth weight (p = 0.03) were significantly associated with the presence of stillborn piglets at the farms examined in this study. Porcine circovirus type 2 (PCV2) was detected in 29.1 % of the litters. Neither parvovirus (PPV) nor leptospirosis infections were identified in this study, suggesting that they have a minor impact on reproductive disease.
猪群中的繁殖失败往往难以诊断，且对养猪生产至关重要。本研究旨在确定位于巴西中西部地区的两个商业养猪场中死产仔猪的潜在风险因素（传染性/非传染性）。潜在风险因素被纳入多变量逻辑模型，因变量定义为给定窝中至少有一头死产仔猪（是或否）。在最佳拟合模型中，多变量分析中的两个变量，即总产仔数（p = 0.01）和平均出生体重（p = 0.03）与本研究中所考察农场的死产仔猪的存在显著相关。在29.1%的窝中检测到2型猪圆环病毒（PCV2）。本研究未发现细小病毒（PPV）感染和钩端螺旋体病感染，表明它们对繁殖疾病影响较小。
