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Estimation of apparent protein digestibility using uric acid-corrected nitrogen values in poultry excreta.

作者信息

Rotter B A, Frohlich A A, Rotter R G, Marquardt R R

机构信息

University of Manitoba, Department of Animal Science, Winnipeg, Manitoba, Canada.

出版信息

Poult Sci. 1989 Feb;68(2):327-9. doi: 10.3382/ps.0680327.

DOI:10.3382/ps.0680327
PMID:2704689
Abstract

Apparent protein digestibility values were calculated using three methods based on nitrogen digestibility, corrected and uncorrected for uric acid and amino acid digestibility. Amino acid digestibility, as determined by the summation of individual amino acid values, excluding methionine and cystine (81.2%), closely approximated protein digestibility values derived from nitrogen corrected for uric acid (81.4%). Uncorrected nitrogen values gave misleading results (38.4%). Apparent protein digestibility values, when corrected for uric acid, appear to provide a simple and reliable method for estimating protein digestibility.

摘要

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