caa a22 4500 397569238 CHVBK 20180308164836.0 cr unu---uuuuu 161202e199609 xx s 000 0 eng 10.3382/ps.0751098 doi (NATIONALLICENCE)oxford-10.3382/ps.0751098 Additivity of Apparent and True Ileal Amino Acid Digestibilities in Soybean Meal, Sunflower Meal, and Meat and Bone Meal for Broilers [Elektronische Daten] [K. ANGKANAPORN, V. RAVINDRAN, W. L. BRYDEN] An experiment was conducted to determine the additivity of apparent and true ileal amino acid digestibility values in soybean meal (SBM), sunflower meal (SFM), and meat and bone meal (MBM). A total of 63 individually caged 5-wk-old broilers were assigned to seven groups and given semi-purified diets containing SBM, SFM, MBM, and their combinations. True digestibilities were estimated by using the homoarginine in guanidinated proteins as the marker. Additivity was tested by comparing the differences between the observed digestibilities of ingredient combinations and the predicted values from measurements with individual ingredients. In general, for both apparent and true digestibilities, there were no significant differences (P > 0.05) between the observed and predicted values in ingredient combinations. The only exception was SBM + MBM combination, in which the observed values for apparent digestibilities of aspartic acid, serine, glutamic acid, isoleucine, and tyrosine were significantly higher (P < 0.05) than the predicted values. Overall, the present results indicate that amino acid digestiblity values are additive and that digestible amino acid supply in a complete diet can be predicted from amino acid digestibilities of individual ingredients. © 1996 Poultry Science Association, Inc. Metabolism and Nutrition nationallicence amino acid digestibility nationallicence additivity nationallicence homoarginine nationallicence broiler nationallicence ANGKANAPORN K. aut RAVINDRAN V. aut BRYDEN W. L. 2To whom correspondence should be addressed. aut Poultry Science Oxford University Press 75/9(1996-09), 1098-1103 0032-5791 75:9<1098 1996 75 ps https://doi.org/10.3382/ps.0751098 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0751098 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- ANGKANAPORN K. aut NATIONALLICENCE 700 1- RAVINDRAN V. aut NATIONALLICENCE 700 1- BRYDEN W. L. 2To whom correspondence should be addressed aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/9(1996-09), 1098-1103 0032-5791 75:9<1098 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford