Table 2

Mean plasma amino acids concentrations (μmol/L) in calves on the final day of a five day intravenous infusion of saline (control); glucose; essential amino acids (EAA) and glucose + EAA.
	Control	Glucose	EAA	EAA+Glucose

Leucine	135^a± 7.83	69.8^c± 5.22	239.6^b± 13.15	155^a± 12.05
Isoleucine	110^a± 6.04	59.1^c± 4.09	193.6^b± 7.09	131^a± 8.77
Valine	252^a± 14.31	135^c± 11.39	465.9^b± 24.50	298^d± 19.09
Histidine	50.5^a± 1.96	30.8^c± 2.79	70.3^b± 1.50	68.6^b± 2.93
Phenylalanine	60.9^a± 2.60	49.0^a± 2.62	186.4^b± 6.78	185^b± 9.80
Tyrosine	50.9^a± 2.60	43.6^a± 4.15	67.5^b± 7.04	86.1^b± 6.81
Methionine	15.8^a± 1.31	11.4^a± 1.10	34.7^b± 2.17	36.9^b± 2.03
Arginine	129^a± 8.26	78.6^c± 6.99	169.9^b± 3.39	166^b± 7.54
Lysine	118^a± 7.87	56.9^c± 5.18	186.1^b± 8.84	166^b± 10.5
Threonine	111^a± 7.68	80.2^a± 7.61	179.7^b± 11.49	202^b± 11.24
Tryptophan	34.9^ac± 2.89	27.7^a± 1.87	41.7^bc± 1.07	44.7^bc± 1.68
Serine	76.4 ± 6.15	101 ± 7.29	62.8 ± 4.26	80.7 ± 4.33
Aspartate	25.7 ± 0.89	28.1 ± 0.38	18.8 ± 1.42	21.6 ± 0.98
Asparagine	29.0 ± 2.26	26.1 ± 1.64	22.7 ± 1.65	25.5 ± 1.06
Glutamate	137 ± 12.71	110 ± 5.47	118 ± 9.23	131 ± 8.17
Glutamine	188 ± 13.45	197 ± 10.13	154 ± 9.50	164 ± 9.04
Proline	77.5 ± 3.90	63.0 ± 3.02	63.1 ± 2.99	63.4 ± 2.02
Glycine	221 ± 27.55	386 ± 23.55	156 ± 23.12	292 ± 26.17
Alanine	228 ± 5.79	142 ± 9.72	171 ± 11.77	159 ± 8.40
Citrulline	73.4 ± 5.28	52.6 ± 3.19	77.6 ± 9.05	66.2 ± 3.54
Ornithine	101 ± 8.03	52.2 ± 4.16	117 ± 9.05	84.7 ± 5.71

TAA	2272^abc± 80.10	1842^ab± 106.30	2837^c± 74.53	2687^bc± 117.92
BCAA	497^a± 2.95	264^b± 27.06	899^c± 41.74	584^ac± 33.92
EAA	1018^a± 39.72	598^b± 57.86	1767^c± 37.42	1336^d± 78.87
NEAA	1259 ± 52.10	1243^a± 7.99	1086^a± 48.99	1233^a± 7.99

6 plasma samples were taken at hourly intervals during the last 6 hours of the infusion and pooled prior to analysis. TAA, total amino acids; BCAA, branched chain aminoacids; NEAA, non-essential amino acids. Values are means ± standard error of the mean (SEM). ^a,b,cValues within the same row with different superscripts are significantly different (P < 0.05).
Sadiq et al. Nutrition & Metabolism 2008 5:5 doi:10.1186/1743-7075-5-5