. 2019 Oct 9;3(4):1502–1512. doi: 10.1093/tas/txz120

Table 2.

Effects of an October or December weaning date and winter nutritional treatment¹ on steer progeny value through slaughter ($/steer)

	October				December					P-value²
Item ($/steer)	WR0	WR1	WR2	CR	WR0	WR1	WR2	CR	SE³	Wean	Winter	W × W
Costs
RO, Total Costs	765.83^a	748.59^b	699.70^e	725.77^c	716.21^d	666.15^f	670.47^f	667.53^f	9.48	<0.01	<0.01	<0.01
PC, Market value	868.53^b	910.30^a	877.75^b	919.11^a	827.04^d	816.32^d	873.04^b	854.32^c	11.78	<0.01	<0.01	<0.01
Feedlot cost	528.71^b	525.19^bc	518.44^de	536.77^a	521.65^cd	513.79^e	529.24^b	524.52^bc	7.59	<0.01	<0.01	<0.01
Revenue
HCW value	1,348.87^d	1,365.15^cd	1,357.86^d	1,420.95^a	1,305.94^e	1,312.61^e	1,387.84^b	1,382.67^bc	31.75	<0.01	<0.01	<0.01
GP value	1,343.40^c	1,353.87^c	1,359.31^bc	1,382.64^a	1,306.54^d	1,299.98^d	1,379.38^ab	1,354.57^c	25.37	<0.01	<0.01	<0.01
Revenue rankings
HCW rank	6	4	5	1	8	7	2	3
PC rank	6	5	3	1	7	8	2	4
Net returns
RO
HCW	54.33^f	91.37^d	139.72^bc	158.41^b	68.08^e	132.67^c	188.13^a	190.62^a	20.97	<0.01	<0.01	0.08
GP	48.86^e	80.09^d	141.17^b	120.10^c	68.68^d	120.04^c	179.67^a	162.52^a	16.58	<0.01	<0.01	0.41
PC
HCW	−48.37^d	−70.34^e	−38.33^c	−34.93^d	−42.75^cd	−17.50^b	−14.44^b	3.83^a	17.75	<0.01	<0.01	<0.01
GP	−53.84^c	−81.62^d	−36.88^ab	−73.24^d	−42.15^b	−30.13^ab	−22.90^a	−24.27^a	13.04	<0.01	<0.01	<0.01

¹Winter nutritional treatments: range without supplement (WR0), winter range with 0.45 kg DM/d 32% CP supplement (WR1), winter range with 0.91 kg DM/d 32% CP supplement (WR2), corn residue without supplement (CR).

² P-values: weaning date treatment main effect (Wean), winter nutrition treatment main effect (Winter), weaning date by winter grazing treatment interaction (W × W).

³Standard error of the least squares mean (n = 12 observations per treatment replication [3/yr]).

^abcdefWithin a row, indicate that the values that lack a common superscript letter differ (P < 0.05).