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Revista Brasileira de Zootecnia

On-line version ISSN 1806-9290

Abstract

EYNG, Cinthia et al. Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals, determined in cecectomized cocks. R. Bras. Zootec. [online]. 2012, vol.41, n.1, pp.80-85. ISSN 1806-9290.  https://doi.org/10.1590/S1516-35982012000100012.

Chemical and amino acid composition and true digestibility coefficients of amino acids of feather and blood meals for birds from different suppliers were determined. Thirty cecectomized cocks were distributed in a completely randomized design, with 4 different feather and blood meals (meals 1, 2, 3 and 4) and one treatment in which the birds remained fasting, with six replications as the experimental unit composed of one rooster. The variations in the chemical composition of the feather and blood meals can be related to the lack of standardization in the processing to which they are submitted. Mean true digestibility coefficients of essential and non essential amino acid for feather and blood meals 1,2, 3 and 4 are 75.14 and 68.41; 73.34 and 67.17; 78.99 and 75.41; 78.55 and 73.40%, respectively.

Keywords : animal byproducts; cecectomized cockerels; digestible amino acids; digestibility coefficients.

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