Inoculação experimental de Salmonella entérica Sorovar Schwarzengrund em embriões e pintos de corte

• Autor(a) principal: Figueira, Samantha Verdi
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/6642
• topic: Salmonelose; Ovos férteis; Ração; Vias de transmissão; Salmonelosis; Fertile eggs; Feed; Transmission paths; MEDICINA VETERINARIA::PATOLOGIA ANIMAL

The present study was developted with the main object to evaluate the invasive ability, persitence and behavior of Salmonella Schwarzengrund in embryos and broiler chicks with one day of birth. Initially, 260 fertile eggs from broiler chicken were incubated e randomly distributed onto three different incubators. In the nineteenth day post incubation, the eggs were submited to candling and at the time 40 eggs were eliminated. The remaining eggs were distrubuted and 50 eggs were inoculated with 0,2 mL of sterile buffered saline 0,85% trough the air chamber and 50 eggs were inoculated with 1,5 x 104 UFC/0,2mL of Salmonella Schwarzengrund trough the air chamber, 100 were incubated without treatment. After the eclosion, the one day-old chicks were equally distributed in four treatments, discriminated well below: T1 – feed control – 30 chicks from incubator number 1, and received 0,1 mL of sterile buffered saline 0,85% per g of feed; T2 – feed inoculated - 30 chicks from incubator number 1, received feed with 5,3 x 10 4/0,1mL/g of Salmonella Schwarzengrund in buffered saline 0,85% per g de of feed until the seventh day-old; T3- inoculated control trough air chamber -30 chicks from inoculated embryos with 0,2 mL of sterile buffered saline 0,85% trough the air chamber; T4- inoculated trough air chamber - 30 chicks from inoculated embryos with 1,5 x 104 UFC/0,2mL de Salmonella Schwarzengrund in the air chamber. Salmonella Schwarzengrund was able to cause embryo mortality, enteric colonization, negatively influenced the weight gain, septicemic and enteric signs, with no correlation between the inoculation way. The bidrs shown clinical signs seen as feces adered to cloaca,diarrhea, prostration, decreased appetite, growth retardation and sleepness. The contamination determined higher weight and length of intestinal and liver with 25 days.Therefore is conclude that Salmonella Schwarzengrund is able to invade and persist in organs of inoculated air chamber embryo and one day old chicks contaminated feed.