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

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Table 3 Plasma concentrations of amino acids (μmol/L) -5, 30, 60 and 180 min (T) after supplementation (Trt) at d 120 of pregnancy (P120) of twin-bearing ewes either supplemented with arginine ( n = 9) or saline (control; n = 9) from P100 to P140 or parturition ¹

	-5 min		30 min		60 min		180 min		SEM	P value
	Arginine	Control	Arginine	Control	Arginine	Control	Arginine	Control		Trt	T	Trt × T
Taurine	67	81	83	93	91	101	83	120	11	0.12	<0.01	0.24
Aspartic Acid	7	8	8	10	9	9	9	8	1	0.47	0.19	0.48
Threonine	154	176	156	222	173	193	183	221	20	0.09	0.15	0.47
Serine	95	127	114	125	106	121	116	136	13	0.11	0.60	0.84
Asparagine	27	56	43	45	35	43	35	46	10	0.13	0.95	0.53
Glutamic acid	74	85	85	74	101	84	72	64	9	0.41	0.06	0.43
Glutamine	266	289	273	288	317	316	314	296	24	0.79	0.28	0.82
Glycine	454	532	454	559	471	572	475	587	25	<0.01	0.04	0.64
Alanine	217	234	215	246	226	243	199	231	15	0.16	0.13	0.70
Citrulline	126	150	123	155	135	166	144	192	13	0.04	<0.01	0.03
Valine	247	256	256	269	258	301	263	290	20	0.32	0.21	0.66
Cystine	2	1	2	3	13	5	12	2	5	0.39	0.26	0.56
Methionine	30	36	29	38	29	39	25	40	2	<0.01	0.75	0.04
Isoleucine	133	126	137	137	144	157	127	139	11	0.71	0.10	0.64
Leucine	193	183	200	203	210	214	172	211	15	0.59	0.13	0.14
Tyrosine	75	68	77	76	79	78	74	80	6	0.85	0.25	0.33
Phenylalanine	64	75	64	70	66	69	60	68	5	0.16	0.49	0.76
Tryptophan	62	62	46	43	67	56	56	62	5	0.54	<0.01	0.40
Ornithine	145	150	313	151	346	151	249	158	14	<0.01	<0.01	<0.01
Lysine	154	183	208	205	216	229	184	233	17	0.24	<0.01	0.25
Histidine	124	161	133	179	117	141	97	147	13	<0.01	0.02	0.70
Proline	95	108	96	113	103	112	112	114	7	0.15	0.16	0.54

¹Data are presented as means and average SEM, together with P values for treatment and time effects and their interaction.