Abstract:
18A A STUDY ON THE AMINO ACID COMPOSITION OF AUSTRALIAN INGREDIENTS IN 1990 R. Beste, J. Fontaine and W. Heimbeck Preliminary results are presented on the amino acid composition of Australian feedstuffs for 1990. Regression equations, based on crude protein (CP), were derived to predict amino acid content of similar ingredients. Results refer to analyses on meat meal:n=l5, %CP:mean48.7 (range 44.2.54.2), peas:ll,21.7(20.1-23.5); wheat: 12,11.2(9.0-14.4); barley:ll,10.1(6.5-11.3); oats:l2,7.9(6.5Grains and peas were of 9.8), sorghum:12,10.0(7.7-12.1). different varieties and locations. Method of amino acid determination was by ion-exchange chromatography (preoxidation with performic acid; hydrolysis 24 h, 6N HCl). Tryptophan was analysed a,fter alkaline hydrolysis (LiOH) by HPLC/UV detection. Except for meat meal (DM=91%) all values are adjusted to 88% dry matter. In Table 1 simple linear regressions are given to estimate amino acid contents from '% CP' as the only independent variable (Y - a+b*%CP, with Y - % amino acid; a=intercept; b=regression coefficient; r=coefficient of correlation). Degussa AG, P.O. Box 1345, D-6450 Hanau 1, Germany
