SNP-based breeding for broiler resistance to ascites and evaluation of correlated production traits

Lee, Katie Pepper; Anthony, Nicholas B.; Orlowski, Sara K.; Rhoads, Douglas D.

doi:10.1186/s41065-022-00228-x

Hereditas

Table 5 Organ weights from the replicate floor trials

From: SNP-based breeding for broiler resistance to ascites and evaluation of correlated production traits

Item	n	Heart		Liver		Lungs		Spleen
Item	n	Weight, g	Yield¹, %	Weight, g	Yield, %	Weight, g	Yield, %	Weight, g	Yield, %
Main effect of trial
Floor1	95	14.95	0.626^b	50.91^a	2.108	15.78	0.663	2.878	0.122^b
Floor2	100	15.17	0.666^a	47.51^b	2.077	15.47	0.680	3.083	0.135^a
SEM		0.30	0.009	1.05	0.034	0.36	0.013	0.079	0.003
Main effect of genetic line
MAS	98	15.07	0.643	49.78	2.108	15.43	0.663	3.001	0.129
REL	97	15.06	0.651	48.58	2.076	15.82	0.681	2.965	0.128
SEM		0.31	0.009	0.98	0.030	0.37	0.013	0.080	0.003
Main effect of sex
Male	98	17.01^a	0.660^a	51.42^a	1.983^b	17.16^a	0.664	3.176^a	0.123
Female	97	13.10^b	0.633^b	46.88^b	2.208^a	14.09^b	0.680	2.788^b	0.134
SEM		0.20	0.008	1.05	0.032	0.34	0.013	0.083	0.003
Trial × Line
Floor1 × MAS	48	15.02	0.624	51.40	2.111	15.78	0.661	2.808	0.118
Floor1 × REL	47	14.88	0.629	50.43	2.105	15.78	0.665	2.951	0.125
Floor2 × MAS	50	15.11	0.660	48.18	2.106	15.09	0.664	3.186	0.139
Floor2 × REL	50	15.24	0.671	46.84	2.048	15.85	0.696	2.978	0.130
SEM		0.49	0.013	1.57	0.050	0.57	0.019	0.114	0.004
Trial × Sex
Floor1 × Male	48	17.00	0.638	52.54	1.960^b	17.51	0.655	3.098	0.116
Floor1 × Female	47	12.88	0.615	49.26	2.269^a	14.05	0.671	2.655	0.127
Floor2 × Male	50	17.02	0.681	50.34	2.006^b	16.81	0.672	3.250	0.129
Floor2 × Female	50	13.31	0.650	44.61	2.151^a	14.13	0.689	2.914	0.140
SEM		0.31	0.013	1.72	0.050	0.57	0.022	0.122	0.004
Line × Sex
MAS × Male	48	17.19	0.663	52.28	1.999	17.01	0.654	3.231	0.124
MAS × Female	50	13.02	0.623	47.33	2.220	13.95	0.670	2.780	0.134
REL × Male	50	16.83	0.657	50.58	1.969	17.31	0.672	3.122	0.122
REL × Female	47	13.19	0.644	46.45	2.194	14.22	0.690	2.798	0.134
SEM		0.32	0.012	1.50	0.049	0.50	0.019	0.133	0.005
P-values
Trial		0.434	< 0.001	0.009	0.348	0.470	0.332	0.052	0.014
Genetic Line		0.999	0.466	0.357	0.508	0.370	0.283	0.731	0.446
Sex		< 0.001	0.018	< 0.001	< 0.001	< 0.001	0.322	< 0.001	0.556
Trial × Line		0.646	0.707	0.888	0.396	0.384	0.447	0.116	0.130
Trial × Sex		0.469	0.690	0.347	0.032	0.364	0.964	0.636	0.610
Line × Sex		0.363	0.284	0.752	0.948	0.971	0.986	0.580	0.978
Trial × Line × Sex		0.284	0.396	0.601	0.660	0.396	0.692	0.806	0.652

Abbreviations: Floor1 Floor cohort 1, Floor2 Floor cohort 2, MAS marker-assisted selection line, REL Relaxed (control) line
1: Yields calculated based on back-dock live weight
Item values with different superscript letters in a column indicates significant difference (p < 0.05) in that trait or effect

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ISSN: 1601-5223

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