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| Fernandez-Alarcon,Miguel Frederico; Souza,Fernando Augusto de; Campos,Daniel Mendes Borges; Hada,Fabricio Hirota; Nogueira,Wedson Carlos Lima; Macari,Marcos; Furlan,Luiz Roberto; Furlan,Renato Luis. |
| ABSTRACT The 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food restriction; Gastrointestinal tract growth; Infectious bronchitis immunization; Intestinal morphometry. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100510 |
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| Luquetti,Brenda Carla; Alarcon,Miguel Frederico Fernandez; Lunedo,Raquel; Campos,Daniel Mendes Borges; Furlan,Renato Luís; Macari,Marcos. |
| ABSTRACT This study aimed to assess the effects of glutamine as feed additive on performance and intestinal mucosa morphometry of broiler chickens vaccinated against coccidiosis. A total of 400 day-old male chicks were randomly assigned to four treatments (NVNG – no vaccination, no glutamine supplementation; NVG – no vaccination, glutamine supplementation (10 g kg−1); VNG – vaccination, no glutamine supplementation; VG – vaccination, glutamine supplementation) replicated four times with 25 birds per replicate. A commercial sprayed-on vaccine against coccidiosis containing Eimeria acervulina, E. maxima, E. mivati, and E. tenella was administered at the hatchery. Broiler performance was evaluated from 1-28 days, and morphometric parameters were analyzed at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anticoccidial vaccines; Intestinal ephitelium; Gut morphometry; Glutamine supplementation; Small intestine. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000400322 |
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