. 2021 Jun 6;100(9):101309. doi: 10.1016/j.psj.2021.101309

Table 6.

Spearman correlation coefficients (r_s) between total incidence of myopathies and carcass parts and yield (as hatched broiler chickens) with the respective P-values in each category.

Variable	Coef. of correlation and P-value	Conventional		Fast		Mod		Slow
		% of WB¹	% of WS²	% of WB¹	% of WS²	% of WB¹	% of WS²	% of WB¹	% of WS²
Live weight	r_s	0.482	0.505	0.309	0.291	0.535	0.404	0.285	0.275
Live weight	P	0.003	0.002	0.006	0.010	<0.001	<0.001	0.008	0.001
Carcass yield	r_s	0.546	0.369	0.605	0.719	0.417	0.478	0.233	0.279
Carcass yield	P	0.001	0.028	<0.001	<0.001	<0.001	<0.001	0.030	0.009
Breast yield	r_s	0.450	0.431	0.589	0.596	0.462	0.236	0.338	0.265
Breast yield	P	0.007	0.009	<0.001	<0.001	<0.001	0.012	0.001	0.013
Thigh yield	r_s	-0.055	-0.068	-0.303	-0.188	-0.094	0.012	-0.095	-0.077
Thigh yield	P	0.752	0.697	0.007	0.101	0.368	0.921	0.382	0.476
Drumstick yield	r_s	-0.042	-0.385	-0.282	-0.338	-0.025	0.055	-0.164	-0.106
Drumstick yield	P	0.809	0.002	0.012	0.003	0.850	0.606	0.128	0.330
Wing yield	r_s	-0.265	-0.167	-0.511	-0.502	-0.377	-0.282	-0.223	-0.168
Wing yield	P	0.123	0.337	<0.001	<0.001	0.003	0.007	0.038	0.119

Results were calculated on a pen basis.

Number of birds per category: CONV: n = 184; FAST: n = 332; MOD: n = 371; SLOW: n = 371.

Number of birds per category: CONV: n = 155; FAST: n = 256; MOD: n = 330; SLOW: n = 287.