Post-hatch fasting and infectious bronchitis vaccination affect growth, gastrointestinal development, and morphometric parameters of the small intestine of broiler breeders up to three weeks of age

dc.creatorFernandez-Alarcon, Miguel Frederico
dc.creatorSouza, Fernando Augusto de
dc.creatorCampos, Daniel Mendes Borges
dc.creatorHada, Fabricio Hirota
dc.creatorNogueira, Wedson Carlos Lima
dc.creatorMacari, Marcos
dc.creatorFurlan, Luiz Roberto
dc.creatorFurlan, Renato Luis
dc.date2023-06-27T15:57:35Z
dc.date2023-06-27T15:57:35Z
dc.date2019-06-05
dc.date.accessioned2023-09-27T21:27:36Z
dc.date.available2023-09-27T21:27:36Z
dc.identifierFernandez-Alarcon, M. F.; Souza, F. A.; Campos, D. M. B.; Hada, F. H.; Nogueira, W. C. L.; Macari, M.; Furlan, L. R. and Furlan, R. L. 2019. Post-hatch fasting and infectious bronchitis vaccination affect growth, gastrointestinal development, and morphometric parameters of the small intestine of broiler breeders up to three weeks of age. Revista Brasileira de Zootecnia 48:e20180245
dc.identifier1806-9290
dc.identifierhttps://locus.ufv.br//handle/123456789/31114
dc.identifierhttps://doi.org/10.1590/rbz4820180245
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8960982
dc.descriptionThe influence of fasting and vaccination against infectious bronchitis (IB) on growth, gastrointestinal development, and morphometric parameters of the small intestine of newborn broiler breeders was investigated. Weight gain (WG), feed conversion ratio (FCR), gastrointestinal visceral growth, residual yolk sac, and morphometric parameters of the small intestine were measured in chicks aged up to 21 d. We showed that WG was lowest in chicks exposed to longer fasting periods (72 h), although compensatory gains with increasing age were also observed. Unvaccinated chicks performed better at seven days; however, at 21 d of age, a compensatory response led to better FCR in vaccinated birds. Allometric growth of the gastrointestinal tract was affected following longer fasting periods, but this effect occurred predominantly in younger birds (three days). Compared with non-fasted, birds fasted for 72 h had lower villus height and crypt depth along the small intestine at three days and lower villus height in the duodenum and jejunum at seven days. However, at 14 and 21 days of age, the previous changes in intestinal morphology imposed by fasting had been offset. The IB vaccine, applied in the first day of life, does not affect the allometric growth of the gastrointestinal organs, but causes momentary loss in the intestinal morphometry, which contributes to the reduction of WG at seven days. Our results suggest that long fasting periods after hatching (48 and 72 h) should be avoided in broiler breeders due to the resulting delay in gastrointestinal organ development and growth impairment up to 21 d of life
dc.formatapplication/pdf
dc.languageeng
dc.publisherBrazilian Journal of Animal Science
dc.relationR. Bras. Zootec., 48:e20180245, 2019
dc.rightsCreative Commons Attribution License
dc.subjectfood restriction
dc.subjectgastrointestinal tract growth
dc.subjectinfectious bronchitis immunization
dc.subjectintestinal morphometry
dc.titlePost-hatch fasting and infectious bronchitis vaccination affect growth, gastrointestinal development, and morphometric parameters of the small intestine of broiler breeders up to three weeks of age
dc.typeArtigo


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