Excretion of endogenous nitrogen and amino acids in swine fitted with ileal T-cannula
1988
Park, B.S. | Yoon, C.S. | Lee, N.H. (Korea Advanced Institute of Science and Technology, Seoul (Korea R.)) | Chee, K.M. (Korea Univ., Seoul (Korea R.). Coll. of Agriculture)
Levels of endogenously excreted nitrogen and amino acids were measured in swine fitted with ileal T-cannula by collecting feces and ileal digesta after feeding N-free diet. Mean body weight of the three swine was 50+-1.7kg. The N-free diet was made based on glucose, corn oil and alpha-cellulose among with mineral and vitamin supplements. Chromic oxide was also included as an indicator at level of 0.2%. The pig were fed 2kg of the diet daily. After 5 days of adjusting period to the diet, feces were collected for 2 consecutive days and then ileal digesta for another 2 more days from the pigs on the N-free diet. Daily endogenous nitrogen and amino acids excreted by the animals were 1.2g and 6.1g in ileal digesta and 0.4g and 2.17g/kg dry matter intake in faces, respectively. They were 24mg and 122mg in ileal digesta and 8mg and 43.4mg in feces, respectively, when expressed on a kilogram body weight basis. Significant differences were observed in the levels of nitrogen and amino acids excreted between ileal digesta and feces (p0.01). Proline (1.04g) was the amino acid of the greatest concentration of the ileal digesta and aspartic acid (0.24g) and glutamic acid (0.25g) of the feces. Methionine was the least excreted amino acid through either terminal ileum or anus. Proline appeared the most affected amino acid when passing through the large intestine and methionine the least affected
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