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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Performance and Calcium Excretion in Two Strains of Broilers, in the Initial Phase, Fed With Different Amino Acids and Calcium Levels

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Author(s):
CSS Araújo [1] ; SMB Artoni [2] ; LF Araújo [3] ; OM Junqueira [4] ; SA Borges
Total Authors: 5
Affiliation:
[1] UNESP
[2] UNESP. FCAV. Departamento de Morfologia e Fisiologia Animal
[3] USP. FZEA. Departamento de Zootecnia
[4] UNESP. FCAV. Departamento de Zootecnia
Total Affiliations: 5
Document type: Journal article
Source: Brazilian Journal of Poultry Science; v. 4, n. 2, p. 111-118, 2002-05-00.
Abstract

Two experiments were conducted to evaluate the performance and calcium excretion of broilers fed the diets with different amino acids (AA) and calcium (Ca) levels in the initial phase. In each experiments, male broilers, Cobb or Avian Farms, were randomly assigned to six treatments in a three X two factorial arrangement, considering the factors AA (100, 125 and 150% NRC, 1994) and Ca (75 and 100% NRC, 1994), in three replications of 30 birds each. The studied AA were methionine, methionine + cystine, lysine and threonine. The performance of the birds was analyzed according weight gain, feed intake and feed conversion. The lower calcium level reduced calcium excretion and increasing amino acids levels reduced weight gain in Avian Farms strain. The Cobb strain was not affected by treatments. (AU)