caa a22 4500 386321981 CHVBK 20180307111629.0 cr unu---uuuuu 161130e198807 xx s 000 0 eng 10.1079/BJN19880086 doi S000711458800087X pii (NATIONALLICENCE)cambridge-10.1079/BJN19880086 Quality improvement of sweet-potato (Ipomoea batatas L. Lam.) roots as feed by ensilage [Elektronische Daten] 1. Sweet-potato (Ipomoea batatas L. Lam.) strips (SPS) mixed with maize powder (CP) in proportions 10:0, 9:1, 8:2, and 7:3 were ensiled for 1, 2 or 3 months. 2. Trypsin inhibitor activity (TIA) decreased during ensilage in samples of all treatments while the SPS-CP mixture (7:3, w/w) ensiled for 3 months contained the lowest TIA. 3. SPS-CP (8:2, w/w) dried or ensiled for 2 months, or ensiled for 2 months and dried, were each mixed with twice the amount of control diet (1:2, w/w) to make three diets. These three diets together with the control diet were used for a feeding experiment with rats to evaluate the nutritive value. 4. General composition analysis (including metabolizable energy), fatty acid composition and amino acid analysis (including percentage of essential amino acids) of the samples did not change during ensilage to an extent which could explain the improved performance of rats fed on ensiled diets. 5. Rats fed on diets containing dried SPS-CP (8:2, w/w) showed significantly lower (P < 0.05) body-weight gain than rats fed on the control diet or ensiled SPS diets, at the end of the 8th week. They also showed enlargement of the pancreas. The adverse effect of SPS was associated with TIA which seemed to be prevented to some extent by ensilage. 6. The possibility that the starch of SPS may also contribute to the adverse effect cannot be excluded at present. Copyright © The Nutrition Society 1988 Lin Yaw-Huei Institute of Botany, Academia Sinica, Taipei, Taiwan 11529 Huang Tzou-Chi Department of Food Science, National Pingtung Institute of Agriculture, Pingtung, Taiwan Huang Chia Council of Agriculture, Taipei, Taiwan British Journal of Nutrition Cambridge University Press 60/1(1988-07), 173-184 0007-1145 60:1<173 1988 60 BJN https://doi.org/10.1079/BJN19880086 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1079/BJN19880086 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin Yaw-Huei Institute of Botany, Academia Sinica, Taipei, Taiwan 11529 NATIONALLICENCE 700 1- Huang Tzou-Chi Department of Food Science, National Pingtung Institute of Agriculture, Pingtung, Taiwan NATIONALLICENCE 700 1- Huang Chia Council of Agriculture, Taipei, Taiwan NATIONALLICENCE 773 0- British Journal of Nutrition Cambridge University Press 60/1(1988-07), 173-184 0007-1145 60:1<173 1988 60 BJN CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge