Use of markers to determine the ileal digestibility of amino acids for swine

Ciência e Agrotecnologia

Paulo Cesar Pozza²  Paulo Cezar Gomes¹  Magali Soares Santos Pozza¹  Ricardo Vianna Nunes¹  Rony Antônio Ferreira¹  Ramalho José Barbosa Rodrigueiro¹ 

[1] ,Universidade Estadual de Maringá/UEM Departamento de Zootecnia Maringá RR ,Brasil

关键词: Acid-insoluble ash;    cellulose;    chromic oxide;    lignin;    simple T-cannula;    Cinza insolúvel em ácido;    celulose;    óxido crômico;    lignina;    cânula T simples;   

DOI  :  10.1590/S1413-70542013000300009

来源: SciELO

【 摘 要 】

Many markers can be used in digestibility assays for swine, but needs to be evaluated before its use. An assay was carried out with the objective of measuring the coefficients of ileal apparent (CIAD) and standardized digestibility (CISD) of amino acids in meat and bone meal for swine using different markers. Eight crossbred barrows were equipped with T-cannulas in the distal ileum. Four animals received a free protein diet and another four received a diet containing meat and bone meal as the only protein source in the diet. The treatments consisted in evaluating the chromic oxide, acid-insoluble ash naturally occurring in the diet, cellulose and lignin as markers to determine the apparent and standardized digestibility of the amino acids contained in the meat and bone meal. All data were submitted to analysis of variance and means were compared using the Tukey test, with a significance of 5%. The CIAD, obtained using chromic oxide as external marker, were lower (P<0.05) than those obtained when acid insoluble ash, lignin and cellulose were used as markers, observing differences for all the amino acids evaluated. Similarly, the CISD from all the studied amino acids were lower (P<0.05) when the chromic oxide was used for determining the indigestibility factor. It is concluded that chromic oxide used as a external marker, to determine the coefficients of apparent and standardized ileal digestibility of the amino acids of the meat and bone meal, is most appropriate than the acid insoluble ash naturally occurring in diets, lignin and cellulose.

【 授权许可】

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