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Experimental Salmonella Gallinarum infection in light laying hen lines BJM
Berchieri Júnior,Angelo; Oliveira,Gláucia Helaine de; Pinheiro,Lucas Augusto Soeiro; Barrow,Paul A..
Although the epidemiology of fowl typhoid in chickens supposedly involves a vertical transmission stage, a previous work run by the authors has suggested that this did not happen in a commercial line of laying hens highly susceptible to systemic disease with Salmonella Gallinarum. A new experiment was carried out in two other lines of commercial layers, considerably more resistant than those used in the previous study. Clinical fowl typhoid was not observed, but Salmonella Gallinarum was isolated from the spleen and liver four weeks after infection and, sporadically, from the ovary.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Salmonella Gallinarum; White Leghorn; Infection; Laying hens.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000100012
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Prevention of Salmonella infection by contact using intestinal flora of adult birds and/or a mixture of organic acids BJM
Oliveira,Gláucia Helaine de; Berchieri Junior,Angelo; Barrow,Paul A..
This study was carried out to assess the ability of competitive exclusion and a mixture of organic acids to prevent Salmonella infection by contact between newly hatched chicks. A bird infected with Salmonella was placed in a box containing non-infected birds, previously treated with a broth culture of faeces of adult birds (CE) and/or a mixture of organic acids. The number of Salmonella organisms in the caeca of the contact birds was estimated at 4 and 8 days post-challenge. The birds were infected with Salmonella Typhimurium, Salmonella Enteritidis (both repeated 5 times), Salmonella Agona and Salmonella Infantis (3 repetitions). The same approach was used to test the mixture of organic acids alone. In this case the birds received feed containing 0.8% of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Salmonella; Competitive exclusion; Organic acids; By-contact infection; Poultry.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200011
Registros recuperados: 2
Primeira ... 1 ... Última
 

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