TY - JOUR
T1 - Requirement of young pigs for apparent ileal digestible tryptophan
AU - Schutte, J.B.
AU - Verstraten, A.J.M.A.
AU - Lenis, N.P.
AU - de Jong, J.
AU - van Diepen, J.Th.M.
PY - 1995
Y1 - 1995
N2 - In 5 growth trials with a total of 420 pigs, tryptophan requirements from 20 to 40 kg liveweight were estimated. L-Tryptophan 0, 0.15, 0.30, 0.45 and 0.60 g/kg was added to a basal diet containing tapioca, barley and maize, with CP 162 g/kg and tryptophan 1.65 g/kg. The control diet was supplemented with lysine, methionine plus cystine, threonine, isoleucine, valine and histidine to assure that only tryptophan was limiting pig performance. Diets were freely given as pellets. Total tryptophan was about 2.10 g/kg for optimal weight gain and feed conversion efficiency in a diet containing NE 9.5 MJ/kg, corresponding with apparent ileally digestible tryptophan 1.77 g/kg.
AB - In 5 growth trials with a total of 420 pigs, tryptophan requirements from 20 to 40 kg liveweight were estimated. L-Tryptophan 0, 0.15, 0.30, 0.45 and 0.60 g/kg was added to a basal diet containing tapioca, barley and maize, with CP 162 g/kg and tryptophan 1.65 g/kg. The control diet was supplemented with lysine, methionine plus cystine, threonine, isoleucine, valine and histidine to assure that only tryptophan was limiting pig performance. Diets were freely given as pellets. Total tryptophan was about 2.10 g/kg for optimal weight gain and feed conversion efficiency in a diet containing NE 9.5 MJ/kg, corresponding with apparent ileally digestible tryptophan 1.77 g/kg.
U2 - 10.18174/njas.v43i3.567
DO - 10.18174/njas.v43i3.567
M3 - Article
SN - 0028-2928
VL - 43
SP - 287
EP - 296
JO - Netherlands Journal of Agricultural Science
JF - Netherlands Journal of Agricultural Science
ER -