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Effect of broiler breeder age and glutamine on the development of the intestinal mucosa of chicks during the first week of the age

Published online by Cambridge University Press:  23 November 2017

F. Dahlke*
Affiliation:
Universidade Federal do Paraná, Cutitiba, Paraná, Brazil
A. Maiorka
Affiliation:
Universidade Federal do Paraná, Cutitiba, Paraná, Brazil
A.V. Fischer da Silva
Affiliation:
Universidade Federal do Paraná, Cutitiba, Paraná, Brazil
I.C. Boleli
Affiliation:
Universidade Estadual, Jacobicabal, Sao Paulo, Brazil
M. Macari
Affiliation:
Universidade Estadual, Jacobicabal, Sao Paulo, Brazil
*
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Extract

The effect of glutamine on the structure of the intestinal mucosa, after suffering any damage is raising interest due to the fact that this amino acid is the main metabolite which nourishes the enterocytes. Yet, the mechanism that promotes proliferation of the intestinal cells is not well known. It might be related with two events: increase of Na+/H exchange at the plasmatic membrane and increase of ornithine descarboxylase specific activity. Glutamine is also able to raise gene transcription, by increasing the activity of kinase protein which activates mitogenesis (Blikslarge et al., 1997). Chick’s weight is determinated by eggs initial weight. Older breeders produce bigger eggs which become chicks with higher weight at eclosion moment. In other words, higher consumption levels of protein at the beginning of laying, provide better albumen quality which becomes thicker, delaying oxygen exchanges, the absorption of yolk sac and embryo uptake of vitamins through egg yolk (Brake, 1995). As the embryo produces 90% of its energy from fat acid oxidative process, oxygen deficit would slow lipid oxidation and embryo development. The purpose of this study was to evaluate the development of the intestinal mucosa of chicks at 7 days of age, proceeding from breeders of different ages and fed with and without glutamine supplement.

Type
Poster Presentations
Copyright
Copyright © The British Society of Animal Science 2007

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References

Blikslarger, A.T. and Roberts, C., 1997. Mechanisms of intestinal mucosal repair. Journal of the American Veterinary Medical Association. 211: 1437–1441.Google Scholar
Brake, J.T., 1995. Pontos importantes de manejo no incubatório para uma boa eclosão. Pages 33–50 in Anais Conferência Apinco de Ciência e Tecnologia Avícolas. Curitiba, PR, Brasil.Google Scholar

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