Pesquisa Veterinária Brasileira
Print version ISSN 0100-736X
PICKLER, Larissa et al. Microbiology, histology and immunology evaluation of broiler chickens challenged against Salmonella Enteritidis and Minnesota and treated with organic acids. Pesq. Vet. Bras. [online]. 2012, vol.32, n.1, pp. 27-36. ISSN 0100-736X. http://dx.doi.org/10.1590/S0100-736X2012000100006.
Two experiments were carried out to evaluate effectiveness of organic acids against Salmonella enterica enterica serovars Enteritidis (SE) and Minnesota (SM) in broilers. In the first experiment three treatments were evaluated: T1 - feeding with organic acids, T2 - feeding with organic acids and organic acids in drink water, and T3 - control group. All animals were oral challenged with SE. Organic acids in diet (T1) and organic acids in diet and drink water (T2) reduced the shadding of Salmonella in crop and cecum 7 days post challenged with SE and reduced the CD3+ cells in jejunal mucosa of broilers. In the second experiment four treatments were evaluated, T1 - control group, T2 - control group oral challenged with Salmonella Minnesota (SM); T3 - oral challenged animals with SM and treated with organic acids in diet; T4 - oral challenged animals with SM and treated with organic acids in diet and in drink water. Organic acids in diet (T3) and organic acids in diet and in drink water (T4) reduced the shadding of SM in crop of challenged broilers, 7 days post inoculation The use of organic acids in diet and in water was more effective to control SE than SM.
Keywords : Goblet cells; CD3+ cells; flow citometric; imunohistochemistry.