Table 4.

BW of heifers grazing bahiagrass pastures and randomly assigned, in a 2 × 2 factorial arrangement of treatments, to receive concentrate DM supplementation at 1.25% or 1.75% of BW offered either daily (7×) or 3× weekly (3×; Monday, Wednesday, and Friday) from days 0 to 168 (2 yr; 64 heifers/yr; 4 pastures/treatment combination/yr)

	Day of the study
BW1, kg	0	42	86	114	140	167	SEM	P-value2
Supplementation amount
1.25%	244	272	306	324	341	353	1.97	<0.0001
1.75%	244	272	308	330	348	362	1.96
P-value3	1.00	0.83	0.48	0.04	0.01	0.004
Supplementation frequency
3×	244	270	303	323	340	353	1.95	<0.0001
7×	244	274	310	332	349	363	1.96
P-value3	1.00	0.22	0.007	0.002	0.003	0.0009

¹Shrunk BW obtained after 12 h of feed and water withdrawn and covariate adjusted for heifer BW on day 0 (P < 0.0001).

² P-value for the effects of supplementation amount × day of the study and supplementation frequency × day of the study.

³ P-value for the comparison of treatments within day of the study.