Table 7.

Average fixed effects of Improvest [immunologically castrated barrows (IC)– physically castrated barrows (PC)]on shoulder cut-out values from a summary of previously reported data^1,2

Item	IC	PC	Effect IC- PC	95% CI	SED	P-value
Boneless Boston butt, kg	3.89	3.71	0.18	(0.03, 0.34)	0.07	0.02
% chilled side wt	8.15	7.76	0.39	(0.19, 0.59)	0.09	< 0.001
% bone-in Boston butt	92.26	92.31	−0.05	(−0.45, 0.35)	0.19	0.79
Boneless picnic, kg2	3.85	3.74	0.11	(−0.04, 0.27)	0.08	0.15
% chilled side wt	8.09	7.93	0.16	(0.04, 0.29)	0.06	0.01
% bone-in picnic	75.37	75.88	−0.51	(−1.64, 0.61)	0.55	0.36
Cushion, kg	1.15	1.11	0.04	(0.00, 0.07)	0.01	0.02
% chilled side wt	2.42	2.31	0.11	(0.02, 0.19)	0.04	0.02
% bone-in picnic	22.37	22.49	−0.12	(−0.99, 0.72)	0.41	0.75
Jowl, kg	1.25	1.34	−0.09	(−0.19, 0.00)	0.05	0.06
% chilled side wt	2.61	2.81	−0.20	(−0.32, -0.08)	0.06	< 0.01
Neck bones, kg	1.02	1.00	0.02	(−0.06, 0.10)	0.04	0.63
% chilled side wt	2.09	2.05	0.04	(−0.03, 0.11)	0.03	0.25
Clear plate, kg	0.95	1.03	−0.08	(−0.20, 0.03)	0.05	0.15
% chilled side wt	1.89	2.07	−0.18	(−0.33, −0.04)	0.07	0.02
Picnic bones, kg	0.91	0.85	0.06	(−0.02, 0.14)	0.04	0.15
% chilled side wt	1.89	1.79	0.10	(0.05, 0.16)	0.03	< 0.01
% bone-in picnic	17.33	16.81	0.52	(−0.11, 1.17)	0.30	0.10

¹Sources include Boler et al. (2011a, 2012, and 2014), Lowe et al. (2014, 2016b), Tavárez et al. (2014), and Harris (2014)

²Bnls picnic includes cushion.