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Table 5 Plasma concentrations of amino acids (μmol/L) 1 h after supplementation at d 140 of pregnancy (P140) of fetuses or 2 h post-birth of lambs from twin-bearing ewes either supplemented with arginine or saline (control) from P100 to P140 or parturition ¹

From: Parenteral administration of twin-bearing ewes with L-arginine enhances the birth weight and brown fat stores in sheep

	Fetal and lamb plasma
	P140				2 h post-birth
	Arginine	Control	SEM	P value	Arginine	Control	SEM	P value
n	6	6			10	10
Taurine	47	84	13	0.03	85	133	30	0.26
Aspartic acid	29	35	3	0.11	19	21	4	0.67
Threonine	616	763	47	0.04	624	608	82	0.83
Serine	530	567	37	0.49	310	257	51	0.40
Asparagine	43	37	9	0.64	112	74	25	0.23
Glutamic acid	122	88	22	0.28	65	55	8	0.36
Glutamine	405	372	22	0.30	431	362	44	0.28
Glycine	748	944	54	0.02	629	721	81	0.53
Alanine	414	399	26	0.63	500	437	66	0.47
Citrulline	218	200	37	0.51	124	71	25	0.15
Valine	350	342	62	0.82	413	262	59	0.09
Methionine	57	104	7	<0.01	84	77	15	0.57
Isoleucine	88	82	8	0.47	181	80	29	0.02
Leucine	172	173	14	0.90	404	175	60	0.02
Tyrosine	115	162	15	0.04	140	128	20	0.47
Phenylalanine	110	121	6	0.23	125	80	19	0.09
β-Alanine	37	50	12	0.45	88	61	21	0.37
Tryptophan	80	79	20	0.97	47	31	7	0.14
Ornithine	367	213	50	0.03	150	107	16	0.07
Lysine	152	192	24	0.24	222	108	41	0.07
Histidine	153	366	40	<0.01	303	333	50	0.77
Arginine	237	192	22	0.17	84	48	23	0.25
Proline	197	203	27	0.87	361	245	49	0.10

¹Data are presented as means and average SEM, together with P value for the treatment effect.

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