On the basis of L-tryptophan used for feed additive,application advances of tryptophan in poultry feed,livestock feed and aquiculture feed were reviewed.And its application prospect was forecasted.%从L-色氨酸作为动物饲料添加剂的角度出发,对其在家禽、家畜以及水产养殖中的应用进行了综述,并对其应用前景进行了展望.
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