면양의 제1위내 미생물 단백질합성에 미치는 요인과 소장에서 아미노산 이용에 관한 연구 2 . 소장에서 아미노산 이용 = Studies on the Factors Affecting Rumen Microbial Protein Synthesis and Utilization of Amino Acids in the Small Intestine of Sheep 2 . Utilization of amino acids in the small Intestine

다국어 초록 (Multilingual Abstract)

This experiment was conducted to examine the effects of different carbohydrate source and nitrogen source upon the utilization of amino acids in the small intestine of sheep. The results obtained are as follows: 1) For the quantities of TAA-N, EAA-N and NEAA-N passing at the duodenum and ileum except NEAA-N passing at the ileum were no significant differences (p$gt;0.05) between diets. The quantities of NEAA-N passing at the ileum for the diets containing meat and bone meal were significantly higher (P$lt;0.05) than the diets containing soyabean meal. The mean values for the proportionate disappearance apparently digested TAA-N, EAA-N and NEAAN within the small intestine for four diets were 0.692±0.0449, 0.702±0.0132, and 0.682±0.726, respectively. 2) There were no significant differences (p$gt;0.05) in duodenal individual amino acid flow between diets with the exception of aspartic acid and glycine. The amounts of each amino acid in duodenal digesta, expressed as a proportion of the amounts ingested for the four diets, were shown that there were net gains of EAA with the exception of arginine and NEAA with the exception of glutamic acid, glycine and proline prior to the small intestine. 3) Within the small intestine, there were no significant losses of each EAA (p$gt;0.05) but significant losses of aspartic acid and glycine of NEAA between diets (p$lt;0.01). The mean values of the proportionate losses of methionine, alanine and lysine within the small intestine were 0.816±0.04, 0.767±0.04, and 0.732±0.01, respectively.