Table 3.

Influence of nutrient restriction and arginine supplementation on ewe BW (kg) throughout gestation

d	Treatment1			SEM	P-value2	P-values3
	CON	RES	RES-ARG			CON vs. RES and RES-ARG	RES vs. RES-ARG
54	63.8	63.7	64.2	1.95	0.98	0.93	0.85
61	64.1	60.3	60.9	1.95	0.32	0.14	0.82
68	62.9a	57.8ab	57.5b	1.94	0.09	0.03	0.91
75	62.3a	56.8b	56.7b	2.00	0.07	0.02	0.96
82	64.1a	57.9b	57.3b	1.99	0.03	0.01	0.83
89	65.3a	58.1b	57.6b	2.09	0.02	0.01	0.85
96	65.5a	57.9b	57.9b	2.20	0.02	0.01	0.99
103	65.7a	57.7b	57.4b	2.13	0.01	0.003	0.93
110	66.4a	57.7b	57.7b	2.06	0.005	0.001	0.99
117	67.0a	56.9b	56.5b	2.16	0.002	0.001	0.89
124	67.6a	56.3b	56.7b	2.17	0.001	<0.001	0.88
131	67.9a	56.0b	56.3b	2.13	<0.001	<0.001	0.91
138	69.6a	56.6b	56.9b	2.12	<0.001	<0.001	0.92
145	69.6a	56.3b	56.1b	2.23	<0.001	<0.001	0.96
152	67.0a	56.5b	56.6b	3.30	0.06	0.02	0.99
Total BW change4	6.59	−7.23	−7.76	0.755	<0.001	<0.001	0.61

^{a, b}Means within a row with different superscripts differ (P ≤ 0.05).

¹CON = control, 100% NRC requirements (n = 11); RES = restricted, 60% CON nutrients (n = 11); RES-ARG = restricted + arginine, 60% CON nutrients with 180 mg rumen-protected arginine supplement per kg BW (n = 10).

² P-value associated with overall F-test for treatment.

³ P-values associated with specific contrasts.

⁴Change is calculated between days 54 and 152 of gestation.