Productive consequences of fasting neonatal chicks of different genetic constitutions for growing

Página do item simplificado
dc.creatorGonzales, Elisabeth
dc.creatorStringhini, José Henrique
dc.creatorDahlke, Fabiano
dc.creatorCunha, Weliton Carlos Pereira da
dc.creatorXavier, Suzany Aparecida Gomes
dc.date.accessioned2017-11-22T14:42:50Z
dc.date.available2017-11-22T14:42:50Z
dc.date.issued2008-12
dc.description.resumoThe study was designed to evaluate the productive consequences of fasting neonatal chicks obtained from strains genetically divergent for growing. Four hundred eight chicks from three strains, 160 from breeders selected for high growth rate and excellent feed conversion ratio (Cobb 500), 160 from breeders not selected for fast growth (JA57), and 160 from a white egg layer strain (Hy-Line W98) were allotted in a 3 (strain) x 2 (fasting period - 8 and 36h after hatching) factorial arrangement with 5 replicates of 16 chicks each. Immediately after hatching, all chicks had similar (P>0.05) relative yolk sac weights (14.13%, 14.50%, and 15.49% for Hy-Line, Cobb, and JA57, respectively). The yolk sac retractions were proportionally higher for Cobb and JA57 chicks up to 144 h (6 days) after placement, but were not influenced by 36h of feed fasting. At 7 and 14 days of age only Cobb chicks had their body weight and weight gain significantly (P<0.05) depressed by 36h feed fasting after hatching. Results indicate that broiler chicks with intense initial growth rates (Cobb 500) need an outstanding nutritional supply, either from exogenous (feed) or endogenous (residual yolk) sources, to achieve a final weight compatible with their genetic constitution. For slow-growing chicks (Hy-Line), nutritional supplementation via yolk sac seems to be more important than exogenous supply (feed) of nutrients during the neonatal period.pt_BR
dc.identifier.citationGONZALES, E.; STRINGHINI, J. H.; DAHLKE, F.; CUNHA, W. C. P.; XAVIER, S. A. G. Productive consequences of fasting neonatal chicks of different genetic constitutions for growing. Revista Brasileira de Ciências Avícola, Campinas, v. 10, n. 4, p. 253-256, Oct./Dec. 2008.pt_BR
dc.identifier.doi10.1590/S1516-635X2008000400010
dc.identifier.issn1516-635X
dc.identifier.issne- 1806-9061
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/12961
dc.language.isoengpt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentEscola de Veterinária e Zootecnia - EVZ (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectChickspt_BR
dc.subjectFastingpt_BR
dc.subjectNeonatalpt_BR
dc.subjectPerformancept_BR
dc.subjectYolk sacpt_BR
dc.titleProductive consequences of fasting neonatal chicks of different genetic constitutions for growingpt_BR
dc.typeArtigopt_BR

Arquivos

Pacote Original
Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
Artigo - Elisabeth Gonzales - 2008.pdf
Tamanho:
97.74 KB
Formato:
Adobe Portable Document Format
Baixar
Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Baixar

Coleções

EVZ - Artigos publicados em periódicos