• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
10.11606/T.74.2008.tde-17022009-082528
Document
Author
Full name
Roselaine Ponso de Oliveira
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Pirassununga, 2008
Supervisor
Committee
Faria, Douglas Emygdio de (President)
Albuquerque, Ricardo de
Artoni, Silvana Martinez Baraldi
Lima, César Gonçalves de
Moro, Maria Estela Gaglianone
Title in Portuguese
Avaliação do desenvolvimento da discondroplasia tibial em frangos de corte submetidos à dieta com 25 hidroxicolecalciferol: características ultraestruturais
Keywords in Portuguese
Discondroplasia tibial
Frango de corte
Placa de crescimento
Abstract in Portuguese
Esta pesquisa teve como objetivo avaliar o desempenho e o desenvolvimento da discondroplasia tibial (DT) em frangos de corte de 1 a 21 dias. Foram utilizados 440 pintinhos machos de um dia, provenientes de matrizes com 60 a 62 semanas de idade, distribuídos em delineamento inteiramente casualisado em esquema fatorial 3x3+2, resultando em 11 tratamentos com quatro repetições de 10 aves cada. Os fatores estudados foram: linhagem da ave (Ross 308, Cobb 500 e Hybro), níveis e fontes de vitamina D (1250UI D3/kg sem 25-(OH)D3; 1250UI D3/kg com 69mg 25-(OH)D3/ton e 3000UI D3/kg com 69mg 25-(OH)D3/ton) e dois tratamentos controles com níveis de cálcio e fósforo segundo Rostagno et al. (2005) com 3000UI D3/kg sem 25-(OH)D3 e 3000UI D3/kg com 69mg 25-(OH)D3/ton de ração. Foram avaliadas características de desempenho e ósseas. No período de 1 a 21 dias, os resultados indicaram que o ganho de peso, conversão alimentar e as concentrações de cálcio e fósforo nas tíbias não foram influenciadas pelos tratamentos e que o consumo de ração foi superior para os tratamentos que compóem o fatorial. A resistência óssea também não foi influenciada pelos tratamentos e a análise histológica não evidenciou lesões características de DT. Conclui-se que, nas condições experimentais da presente pesquisa, o desenvolvimento de DT não foi observado.
Title in English
Evaluation of tibial dyschondroplasia development in broiler chickens fed diets containing 25 hydroxicolecalciferol: ultrastructural characteristics
Keywords in English
Broiler chickens
Growth plate
Tibial dyschondroplasia
Abstract in English
This research was carried out to evaluate the performance and the development of tibial dyschondroplasia (TD) in broilers from 1 to 21 days. Four hundred forty day-old male chickens, from broiler breeders aged 60-62 weeks, were randomly distributed in a 3x3+2 factorial arrangement, resulting in 11 treatments with four replicates of 10 birds each. The factors evaluated were: bird strains (Ross 308, Cobb 500, and Hybro), levels and sources of vitamin D (1250UI D3/kg without 25-(OH)D3; 1250UI D3/kg with 69mg 25-(OH)D3/ton, and 3000UI D3/kg with 69mg 25-(OH)D3/ton), and two control treatments containing calcium and phosphorus levels according to Rostagno et al. (2005) with 3000UI D3/kg without 25-(OH)D3 and 3000UI D3/kg with 69mg 25-(OH)D3/ton of feed. Performance and bone characteristics were evaluated. From 1 to 21 days, the results showed that weight gain, feed conversion, and bone calcium and phosphorus concentrations were not influenced by the treatments, however, feed intake was higher for factorial than control treatments. Bone breaking resistance was not influenced by the treatments and there were no typical lesions of TD. In conclusion, it was not observed TD development in broilers from 1 to 21 days according to experimental procedures of this research.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
DO3076713.pdf (896.72 Kbytes)
Publishing Date
2009-02-18
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
Centro de Informática de São Carlos
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2020. All rights reserved.