. 2010 Jul;140(7):1242–1248. doi: 10.3945/jn.110.125658

TABLE 4.

Serum concentrations of amino acids, glycerol, and GH on d 60, 80, 110, and 140 of pregnancy in ewes fed 100% NRC, 50% NRC, or 50% NRC + Arg diets¹

	d 60 of pregnancy				d 80 of pregnancy				d 110 of pregnancy				d 140 of pregnancy
Variable	100% NRC	50% NRC	50% NRC+ Arg	SEM	100% NRC	50% NRC	50% NRC+ Arg	SEM	100% NRC	50% NRC	50% NRC+ Arg	SEM	100% NRC	50% NRC	50% NRC+ Arg	SEM
	μmol/L for amino acids and glycerol2
Aspartate	7.8^a	4.7^b	4.3^b	0.7	9.6	7.6	7.0	1	5.9	6.0	5.5	0.9	8.8^a	3.1^b	7.2^a	1.1
Citrulline	284^a	127^b	129^b	18	362^a	197^b	241^b	28	225	148	180	20	160	155	203	37
Arginine	287^a	150^b	181^b	26	327^a	186^b	368^a	23	274^a	212^b	322^c	12	259^a	175^b	327^a	30
Alanine	195^a	120^b	127^b	13	158	167	183	23	154	126	133	11	198^a	106^b	144^b	11
Valine	187^a	74^b	88^b	13	200	105	123	25	142^a	63^b	94^b	10	132^a	69^b	115^a	14
Isoleucine	73^a	40^b	41^b	5	70^a	47^b	75^a	6	81^a	56^b	73^a	4	99^a	63^b	92^a	7
Lysine	110^a	35^b	44^b	7	154	94	100	19	128^a	74^c	103^b	8	127^a	72^b	115^a	13
Cysteine²	161^a	105^b	96^b	6	218^a	150^c	173^b	7	162^a	105^c	139^b	7	127^a	88^b	124^a	4
Proline	147^a	96^b	102^b	7	142^a	95^b	128^a	5	142^a	92^b	132^a	5	149^a	97^c	130^b	5
Glycerol	22	33	38	8	18	28	38	8	28	25	48	7	14^a	3.6^c	8.6^b	1.6
GH, μg/L	3.0	2.8	2.4	0.4	2.8	2.7	3.0	0.5	3.1	3.1	4.1	0.6	7.0	12	5.7	1.8

Data are means ± pooled SEM, n = 5. On each day of gestation, means in a row with superscripts without a common letter differ, P < 0.05.

Cysteine + 1/2 cystine.