Respostas fisiológicas de pintos submetidos a diferentes períodos de jejum: parâmetros hematológicos e intestinais
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Data
2007-01-18
Autores
Nakage, Eliana Saiuri [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Foram avaliados parâmetros hematológicos e intestinais de pintos machos e fêmeas submetidos ao jejum de 24 e 48 horas pós-eclosão, seguido de alimentação até o 5º dia de idade. No Capítulo 2, foram avaliados a contagem global de hemácias, concentração de hemoglobina, taxa de hematócrito, volume corpuscular médio e contagem relativa de linfócitos e heterófilos para determinação da relação heterófilo/linfócito, concentração de glicose plasmática, concentração de proteína plasmática. No Capítulo 3, foram avaliados o peso corporal, comprimento do intestino delgado, área e altura de vilo, perímetro do vilo em corte transversal, densidade de vilo e profundidade de cripta, para duodeno, jejuno e íleo. No Capítulo 4, foi estudada a distribuição quantitativa de células caliciformes produtoras de mucinas neutras e ácidas, presentes nos vilos do intestino delgado. No Capítulo 5, foi avaliado se jejum póseclosão seguido de alimentação influencia a freqüência de vilos com apoptose nos diferentes segmentos do intestino delgado. Jejum pós-eclosão e posterior alimentação não permitiu a recuperação até o 5º dia de idade, da maioria dos parâmetros sangüíneos e intestinais, o que resultou em perda de peso corporal dos pintos. Os dados mostram que jejum de água e ração pós-eclosão deve ser evitado, pois afeta os parâmetros sangüíneos e intestinais, podendo comprometer o desempenho do frango e deixá-lo susceptível à ação de agentes patogênicos e doenças.
The purpose of this present study was to evaluate physiological responses of male and female chicks submitted to fasting during 24 and 48 h posthatching, followed by feeding until 5 day of age on hemathological and intestinal parameters. In Chapter 2 were carried out the total red blood cell count, haemoglobin concentration, haematocrit volume, mean corpuscular volume, and specific lymphocytes count and heterophil to determine the heterophil/lymphocytes ratio, plasma glucose concentration and plasma protein concentration. In Chapter 3 were evaluated body weight, small intestine length, height and area villus, villus perimeter in transversal slice, villus density and crypt depth, to duodenum, jejunum and ileum. In Chapter 4 was studied quantitative distribution of goblet cells responsible for production and secretion of neutral and acid mucins of small intestinal. On the Chapter 5 was evaluated if fasting post-hatching followed by feeding has influence in frequency of apoptotic cells in villus located in different segments of small intestine. Fasting post-hatching of 24 and 48 h and subsequent feeding had not allowed the recovery until the 5 day of age, from the most of blood and intestinal parameters that resulted in chick s reduced body weight. The results of this current experiment have show that delays in access to feed and water must be avoided because it affects blood and intestinal parameters having possibility to damage the subsequent performance and let them more susceptible to action of pathogenic agents and illness.
The purpose of this present study was to evaluate physiological responses of male and female chicks submitted to fasting during 24 and 48 h posthatching, followed by feeding until 5 day of age on hemathological and intestinal parameters. In Chapter 2 were carried out the total red blood cell count, haemoglobin concentration, haematocrit volume, mean corpuscular volume, and specific lymphocytes count and heterophil to determine the heterophil/lymphocytes ratio, plasma glucose concentration and plasma protein concentration. In Chapter 3 were evaluated body weight, small intestine length, height and area villus, villus perimeter in transversal slice, villus density and crypt depth, to duodenum, jejunum and ileum. In Chapter 4 was studied quantitative distribution of goblet cells responsible for production and secretion of neutral and acid mucins of small intestinal. On the Chapter 5 was evaluated if fasting post-hatching followed by feeding has influence in frequency of apoptotic cells in villus located in different segments of small intestine. Fasting post-hatching of 24 and 48 h and subsequent feeding had not allowed the recovery until the 5 day of age, from the most of blood and intestinal parameters that resulted in chick s reduced body weight. The results of this current experiment have show that delays in access to feed and water must be avoided because it affects blood and intestinal parameters having possibility to damage the subsequent performance and let them more susceptible to action of pathogenic agents and illness.
Descrição
Palavras-chave
Frango de corte, Hematologia veterinaria, Intestino delgado, Jejum, Pintainho, Hematology, Chick
Como citar
NAKAGE, Eliana Saiuri. Respostas fisiológicas de pintos submetidos a diferentes períodos de jejum: parâmetros hematológicos e intestinais. 2007. vii, 86 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2007.