. 2020 Apr 20;98(5):skaa123. doi: 10.1093/jas/skaa123

Table 5.

Growth performance of calves born from beef heifers offered NOSUP, MOL+, or MOL− for 57 ± 5 d prepartum and 17 ± 5 d postpartum (day 0 to 74; 4 pastures/treatment/yr)

	Maternal supplementation¹				P-value
Item	NOSUP	MOL−	MOL+	SEM	Trt	Trt × day
Male calves at birth, %	43.9	72.2	55.8	11.20	0.24	—
Calf birth BW^1,2, kg	25.2	28.0	26.5	1.00	0.13	—
Calf age on day 147 (early weaning), d	87	91	91	6.0	0.85	—
Calf BW^2,3, kg
Day 147 (early weaning)	79^a	84^a	86^a	3.2	0.54	0.05
Day 154 (drylot entry)	81^x	88^y	89^y	3.2
Day 201 (drylot exit)	125^a	134^b	134^b	3.2
Calf ADG, kg/d
Birth to day 147	0.58	0.57	0.62	0.029	0.48	—
Day 147 to 154	0.30^a	0.54^b	0.64^b	0.109	0.05	—
Day 154 to 201²	0.83^a	0.91^b	0.98^b	0.032	0.02	—
Birth to day 201	0.64^a	0.72^b	0.75^b	0.037	0.05	—
DM intake, day 154 to 201², kg/d
Hay	0.73	0.76	0.75	0.034	0.79	0.93
High-concentrate diet	3.00	3.16	3.17	0.096	0.39	0.97
Total	3.73	3.92	3.92	0.113	0.41	0.95
G:F, day 154 to 201^2,3,4	0.236	0.243	0.246	0.0060	0.51	—

¹Calves were born on day 57 ± 5 and early weaned on day 147. From day 147 to 154, calves offered ad libitum stargrass hay and gradually adapted to a high concentrate diet. From day 154 to 201, 4 steer and 4 heifer calves/treatment/yr were individually offered 1 kg/d of stargrass hay and high-concentrate diet at 3.5% of BW (DM basis).

²Covariate-adjusted for calf age (P ≤ 0.05).

³Covariate-adjusted for calf sex (P ≤ 0.05).

⁴Calculated by dividing total BW gain by total DM intake from day 154 to 201.

^a,bWithin a row, means without a common superscript differ (P ≤ 0.05).

^x,yWithin a row, means without a common superscript tended to differ (0.05 > P ≤ 0.10).