1Henry Y, Du6e P, R6rat A, et al. Determination of tryptophan requirement of growing pigs between 15 and 40 kg live weight. Nutrition Reports Internation- al, 1986,34 (4) :565 - 573.
2Ettle T, Roth F. Specific dietary selection for trypto- phan by the piglet. Journal of Animal Science ,2004, 82(4):1115 - 1121.
4Ohara I, Otsuka S I, Yugari Y, et al. t;ompanson ot the nutritive values of L - , DL - and D - tryptophan in the rat and chick. The Journal of nutrition, 1980, 110 (4) : 634.
5Baker D, Allen N, Boomgaardt 1, et al. Quantitative aspects of D - and L - tryptophan utilization by the young pig. Journal of Animal Science, 1971, 33 (1):42.
6Arentson B, Zimmerman D. Nutritive value of D - tryptophan for the growing pig. Journal of Animal Science, 1985,60 (2):474.
7Burgoon K, Knabe D, Gregg E. Digestible tryptophan requirements of starting, growing and finishing pigs.Journal of Animal Science, 1992,70(8) :2493.
8Montgomery G, Flux D, Carr J. Feeding Patterns in Pigs : The effects of amino acid deficiency. Physiology and Behavior, 1978,20 (6) :693 - 698.
