把下面的话翻译成英文 谢谢了

Question

色氨酸是动物维持生长的必需氨基酸，缺乏色氨酸导致动物采食量下降、生长迟缓被毛粗糙等症状。色氨酸在仔猪日粮中通常作为第四限制性氨基酸，位于赖氨酸、苏氨酸和蛋氨酸之后，除了在蛋白沉积中的作用外，色氨酸还是影响仔猪特别是断奶仔猪采食的重要因素。断奶会造成仔猪的一系列应激反映，表现为采食量明显下降、生长受阻及健康状况恶化，而采食量下降被认为是导致生长性能和身体状况下降的主要原因。色氨酸对于调控仔猪的正常采食、维持健康状态及改善生长性能都起着重要的作用。

Answer 1

L-tryptophan is animals remain growth of the essential amino acids, lack of tryptophan caused animal intake, slow growth is rough and other symptoms. L-tryptophan piglet in diet, usually as fourth restrictive amino acid lysine, l-threonine is, except methionine and after the role in the protein deposition, tryptophan or influence weaning piglets piglet especially important factors in food. Weaning piglets will cause a series of stress for intake, declined obviously, the growth and health, and intake decline is believed to be the cause growth performance and physical condition is the main reason for the decline. To control the normal tryptophan depletion piglet feed, maintain healthy growth and improve performance plays an important role.

Answer 2

Tryptophan is the animal's essential amino acids to maintain growth, the lack of tryptophan resulted in decreased feed intake of animals, growth retardation and other symptoms of coarse hair. Effect of tryptophan in the piglet as the fourth limiting amino acid is usually located in lysine, threonine and methionine, the addition to the role of protein deposition, the effects of tryptophan or post-weaning piglet feed, especially the an important factor. Weaned piglets will be a series of stress caused by reflection of the performance for the decreased feed intake, growth disruption and deterioration of health conditions, and the decline in feed intake is considered lead to the growth performance and the main reason for decline in physical condition. Tryptophan for the normal control piglets feeding, maintaining a healthy growth and to improve the performance of the state plays an important role.

Answer 3

色氨酸是动物维持生长的必需氨基酸，缺乏色氨酸导致动物采食量下降、生长迟缓被毛粗糙等症状。色氨酸在仔猪日粮中通常作为第四限制性氨基酸，位于赖氨酸、苏氨酸和蛋氨酸之后，除了在蛋白沉积中的作用外，色氨酸还是影响仔猪特别是断奶仔猪采食的重要因素。断奶会造成仔猪的一系列应激反映，表现为采食量明显下降、生长受阻及健康状况恶化，而采食量下降被认为是导致生长性能和身体状况下降的主要原因。色氨酸对于调控仔猪的正常采食、维持健康状态及改善生长性能都起着重要的作用。

Tryptophan is the animal's essential amino acids to maintain growth, the lack of tryptophan resulted in decreased feed intake of animals, growth retardation and other symptoms of coarse hair. Effect of tryptophan in the piglet as the fourth limiting amino acid is usually located in lysine, threonine and methionine, the addition to the role of protein deposition, the effects of tryptophan or post-weaning piglet feed, especially the an important factor. Weaned piglets will be a series of stress caused by reflection of the performance for the decreased feed intake, growth disruption and deterioration of health conditions, and the decline in feed intake is considered lead to the growth performance and the main reason for decline in physical condition.
Tryptophan for the normal control piglets feeding, maintaining a healthy growth and to improve the performance of the state plays an important role.