Histomorfometria de orgãos linfoides e desenvolvimento intestinal de pintos de corte originados de matrizes com diferentes idades e submetidos ao estresse por calor na incubação
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Data
2017
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Editor
José Henrique Stringhini
Resumo
This study was carried out to evaluate the effect of breeder age and hatching temperature variations on chick quality. The experiment was a completely randomized design in a 3x2 factorial
arrangement (three breeder ages and two hatching temperatures). We used 720 eggs from three
breeder ages (30, 42, or 64 weeks). The hatching temperature for control group was 37.5 °C during
all the hatching period and for the elevated temperature group, it was 39.0 °C during 6h between 10
and 18 days of incubation. Five chicks per treatment were euthanized by cervical dislocation for
bursal and spleen morphological measurements. The data were analyzed using ANOVA and the
differences among means were compared by Tukey test (5%). Chicks from older flock had larger
follicular area of bursa de Fabricius when hatched under normal temperature. The higher hatching
temperature induced intestinal development because chicks hatched under high temperature had
bigger crypt depth. Changes in hatching machine temperature affected young flock chick quality.
Chicks from older flocks had better immune response.
Descrição
Palavras-chave
Baço, Bursa de Fabricius, Frangos, Imunidade, Mucosa intestinal, Broiler, Bursal, Hatching, intestine, Spleen
Citação
LEANDRO, Nadja Susana Mogyca; GOMES, Natali Almeida; CAFÉ, Marcos Barcellos; CARVALHO, Fabyola Barros; STRINGHINI, José Henrique; LABOISSIÈRE, Michele. Histomorfometria de orgãos linfoides e desenvolvimento intestinal de pintos de corte originados de matrizes com diferentes idades e submetidos ao estresse por calor na incubação. Ciência Animal Brasileira, Goiânia, v. 18, e34828, 2017. Disponível em: <https://www.revistas.ufg.br/vet/article/view/e-34828/22545>.