Sources of trophic action on performance and intestinal morphometry of broiler chickens vaccinated against coccidiosis

Author(s)

Sakamoto, I, M. ^[1] ; Faria, D. E. ^[1] ; Nakagi, V. S. ^[1] ; Murakami, A. E. ^[2]

Affiliation

^[1] Sakamoto, M., I, Univ Sao Paulo, FZEA, Dept Zootecnia, BR-13635900 Pirassununga, SP - Brazil

^[2] Univ Estadual Maringa, Dept Zootecnia, BR-87020900 Maringa, Parana - Brazil

• Document type: Journal article
• Source: Brazilian Journal of Poultry Science; v. 16, n. 4, p. 389-396, OCT-DEC 2014.
• Web of Science Citations: 3

Abstract

The aim of this experiment was to evaluate the effect of sources of trophic action (glutamine alone, glutamine associated with glutamic acid and yeast) associated with vaccination against coccidiosis on the performance and morphometry of the small intestine of broilers. In the trial, 1,200 broiler chicks were distributed according to a completely randomized design with a 3 x 2 + 2 (trophic action x vaccination or not + control - free trophic factor) factorial arrangement, with five replicates of 30 birds each. Vaccination negatively affected performance parameters and the morphometry of the intestinal mucosa, but at the end of the experimental period, among the broilers vaccinated against coccidiosis, the group fed glutamine presented better recovery from epithelial losses of the intestinal mucosa compared with the control groups. Therefore, the dietary supplementation with the evaluated sources of trophic action could be a strategy to enhance the development of broilers submitted to vaccine stress, also considering the economic viability of the productive segment. (AU)

• FAPESP's process: 06/04655-8 - Influence of pure or combined glutamine with glutamic acid, and of nucleotides in the pre-starter and starter diets on the performance, development and intestinal mucosa enzyme activity in broiler chickens
• Grantee: Douglas Emygdio de Faria
• Support Opportunities: Regular Research Grants