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Establishment of a Pathogenicity Index for Mice to Pasteurella multocida Strains Isolated from Poultry and Swine Rev. Bras. Ciênc. Avic.
Emery,BD; Furian,TQ; Chitolina,GZ; Pilatti,RM; Borges,KA; Salle,CTP; Moraes,HLS.
ABSTRACT Fowl cholera is a contagious disease that results from infection by the bacterium Pasteurella multocida. This microorganism is extensively distributed among animal species, but little is known regarding it’s pathogenesis and specificity to various hosts. Many studies using pathogenicity evaluation methods are subjective and difficult to quantify because they are often only involved in the observation of the lethal capacity of the agent in experimental inoculation. Due to a lack of more consistent data, this study aimed to establish a classification model of P. multocida pathogenicity in mice using strains isolated from poultry and swine. A total of 94 strains of P. multocida isolated from clinical cases of FC and from lungs of swine were tested. A...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mice; Pasteurella multocida; Pathogenicity index.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200237
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Determining the Best Sectioning Method and Intestinal Segment for Morphometric Analysis in Broilers Rev. Bras. Ciênc. Avic.
Gava,MS; Moraes,LB; Carvalho,D; Chitolina,GZ; Fallavena,LCB; Moraes,HLS; Herpich,J; Salle,CTP.
Brazilian poultry production is very efficient and demands maximum broiler performance. Therefore, digestive system pathologies have a relevant role. Considering it is difficult to obtain consistent information on intestinal morphometric analysis, this study aimed at establishing essential and clear criteria for the collection of intestinal segments for morphometric analysis. Fifteen 13-d-old broilers were sacrificed and three intestinal segments were collected per bird. Two 3-cm long sections were obtained from each of the intestinal segments. Samples were collected open or closed. The closed samples were transversely, hemicylindrically, or longitudinally sectioned. Samples were processed and stained with hematoxylin and eosin. The number of microscopic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Image; Intestine; Morphometry; Poultry; Villus.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200145
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