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Contaminação por Salmonella spp. em uma cadeia de produção de ovos de uma integ...
Kottwitz,L.B.M.; Back,A.; Leão,J.A.; Alcocer,I.; Karan,M.; Oliveira,T.C.R.M.Contamination of ISA BROWN layer hens by Salmonella spp. and serotyping of the isolated strains were performed in 30 farms. Salmonella detection was done from feces and cloaca swabs. Eggs produced in the farms contaminated by Salmonella spp. were analyzed by culturing the shell rinsing and egg yolk. Salmonella spp. was isolated in eight (23.0%) farms, but was not detected from eggs. S. Enteritidis, which is the...
Public good provision - Why people do (not) contribute? An experimental explora...
Lopes, H.; Castro Caldas, J. M.; Costa, A.; Carvalho, L. F.; Gusmão, J. G.; Leão, J.; Rodrigues, J.; Cordeiro dos Santos, A.In public good provision situations, individual members of a group have a choice of contributing or not contributing to the provision of a good from which all benefit, including those who chose not to do so. In such a context, theories of rational choice predict that individuals will try to “free ride” on the contribution of others – they will attempt to enjoy the good without contributing, leading thus to the ...
Herpes vírus humano-8 e Sarcoma de Kaposi
Leão,J.C.; Hinrichsen,S.L.; Freitas,B.L. de; Porter,S.R.
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