Integridade óssea de tíbias de frangos de corte submetidos ao estresse cíclico de calor
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Data
2018
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Editor
José Henrique Stringhini
Resumo
Macroscopic and microscopic changes in the epiphyseal region of the tibia were recorded in the 42nd
day of life of broilers subjected to one-hour heat stress in different rearing phases. The treatments
comprised both broilers reared under room temperature and humidity conditions from the 1st to the
42nd day of life (control) and broilers subjected to heat stress from the 16th to the 21st, from the 22nd
to the 42nd, and from the 16th to the 42nd day of life. The adopted design was completely randomized
with six replicates; 35 broilers were used in each experimental unit. Fragments from the epiphyseal
region were extracted and sectioned lengthwise for macro and microscopic analyses. Data on tibia
lesion scores were analyzed by Kruskal Wallis test at 5%. The one-hour cyclic heat stress did not
change the morphologic integrity in the epiphyseal region of the tibia in the different treatments.
Broilers subjected to one-hour cyclic heat stress did not develop lesions that suggested tibial
dyschondroplasia, regardless of the rearing phase.
Descrição
Palavras-chave
Ave, Desenvolvimento ósseo, Discondroplasia tibial, Estresse térmico, Problemas de pernas, Bone development, Broilers, Leg issues, Thermal stress, Tibial dyschondroplasia
Citação
MARCHINI, Cristiane Ferreira Prazeres; CAFÉ, Marcos Barcellos; NASCIMENTO, Mara Regina Bueno de Mattos; FERNANDES, Evandro de Abreu; BELETII, Marcelo Emílio; GUIMARÃES, Ednaldo Carvalho. Integridade óssea de tíbias de frangos de corte submetidos
ao estresse cíclico de calor. Ciência Animal Brasileira, Goiânia, v. 19, e38035, 2018. Disponível em: <https://www.revistas.ufg.br/vet/article/view/e-38035/25780>.