Cattle and environmental sample-level factors associated with the presence of Salmonella in a multi-state study of conventional and organic dairy farms

Surto de salmonelose pelo sorovar Dublin em bezerros no Maranhão

“…A hepato e esplenomegalia e a congestão pulmonar são, também, achados consistentes e fortemente sugestivos de salmonelose septicêmica (Barros 2007, Blanchard 2012. A enterite discreta observada em um animal, que não apresentou diarreia, é comum nas infecções pelo sorovar Dublin (Fossler et al 2005).…”

“…Vários aspectos já considerados importantes na epidemiologia desta enfermidade foram observados na propriedade, como introdução de novos animais (Houston et al 2002), utilização de esterco nos piquetes (Warnick et al 2001), estresse hídrico e modificações no manejo (Nielsen 2003), presença de animais e aves silvestres (Evans 1996), manutenção de animais de diferentes idades no mesmo ambiente e aumento no número de animais (Fossler et al 2005). Esses aspectos dificultaram a identificação da fonte de infecção ou o principal fator desencadeante do surto.…”

Salmonella enterica serovar Stanley intrauterine infection in a stillborn calf - case report

“…Even though there was no isolation of Salmonella from pigeons and Salmonella was not detected on the farm before, we cannot exclude the wild birds as a potential source of infection. Other than bird droppings, sources of infection like manure stores or other sick animals could be possible as well (Fossler et al 2005).…”

Antimicrobial Drug Resistance and Molecular Characterization of Salmonella Isolated from Domestic Animals, Humans and Meat Products

“…Results from the various studies conducted indicated some variability in the prevalence of fecal shedding of Salmonella among the different cattle and production systems sampled possibly due to several factors such as state of origin, treatment with antimicrobials, herd size and season that have previously been reported (Fossler et al, 2005 (Fitzgerald et al, 2003) that examined factors affecting fecal shedding of Salmonella in dairy cattle reported that multiparous lactating cows tended to shed more (P = 0.06) Salmonella than primiparous lactating cows (39% vs 27%, respectively), and that parity did not influence (P > 0.10) Salmonella shedding in non lactating cows. Unfortunately, information on parity of the cows in Khaitsa et al (2004) was not obtained so comparisons of Salmonella prevalence by parity could not be made.…”