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 7 Meat quality characteristics from the replicate floor trials

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

Item	n		24-h Color				Shear
Item	n	Drip loss¹, g	L*(D65)	a*(D65)	b*(D65)	24-h pH	Force (N)	Area 1:3	Peaks
Main effect of trial
Floor1	198	2.052	52.34	2.050^a	8.932^a	5.946^a	14.04	187.7	8.823^b
Floor2	197	2.165	52.72	1.776^b	8.607^b	5.857^b	14.26	191.9	9.545^a
SEM		0.116	0.19	0.071	0.108	0.013	0.23	2.7	0.182
Main effect of genetic line
MAS	196	2.161	53.03^a	1.805^b	8.956^a	5.875^b	13.85^b	184.0^b	8.981
REL	199	2.047	52.04^b	2.011^a	8.582^b	5.926^a	14.45^a	195.6^a	9.384
SEM		0.114	0.19	0.069	0.107	0.013	0.22	2.6	0.179
Main effect of sex
Male	198	1.612^b	51.50^b	1.923	8.384^b	5.935^a	13.76^b	186.0^b	8.859^b
Female	197	2.617^a	53.56^a	1.893	9.157^a	5.866^b	14.55^a	193.7^a	9.512^a
SEM		0.125	0.18	0.071	0.106	0.013	0.22	2.7	0.187
Trial × Line
Floor1 × MAS	97	2.117	52.89	1.905	9.093	5.925	14.32^ab	189.1^b	8.521
Floor1 × REL	101	1.990	51.79	2.190	8.774	5.966	13.78^b	186.5^b	9.113
Floor2 × MAS	99	2.204	53.16	1.706	8.821	5.825	13.39^b	179.0^b	9.427
Floor2 × REL	98	2.106	52.30	1.824	8.389	5.885	15.14^a	204.9^a	9.667
SEM		0.166	0.27	0.103	0.155	0.018	0.33	3.9	0.268
Trial × Sex
Floor1 × Male	101	1.460	51.12	2.152	8.469	5.980	13.28^b	180.4^b	8.441
Floor1 × Female	97	2.696	53.56	1.945	9.414	5.910	14.83^a	195.3^a	9.229
Floor2 × Male	97	1.771	51.89	1.682	8.295	5.888	14.26^ab	191.9^ab	9.299
Floor2 × Female	100	2.542	53.56	1.842	8.908	5.822	14.28^ab	192.1^ab	9.783
SEM		0.179	0.27	0.113	0.149	0.019	0.33	3.9	0.290
Line × Sex
MAS × Male	98	1.670	51.80	1.855	8.411^b	5.916	13.62	180.7	8.699
MAS × Female	98	2.663	54.25	1.754	9.506^a	5.833	14.09	187.3	9.265
REL × Male	100	1.556	51.20	1.992	8.356^b	5.954	13.91	191.3	9.018
REL × Female	99	2.570	52.88	2.029	8.811^b	5.898	15.01	200.0	9.758
SEM		0.178	0.26	0.104	0.156	0.019	0.32	4.0	0.264
P-values
Trial		0.629	0.113	0.003	0.017	< 0.001	0.457	0.239	0.002
Genetic Line		0.515	< 0.001	0.037	0.009	0.003	0.045	0.001	0.060
Sex		< 0.001	< 0.001	0.803	< 0.001	< 0.001	0.009	0.031	0.016
Trial × Line		0.908	0.611	0.367	0.757	0.622	< 0.001	< 0.001	0.378
Trial × Sex		0.128	0.112	0.052	0.236	0.848	0.010	0.040	0.681
Line × Sex		0.967	0.112	0.456	0.025	0.473	0.287	0.778	0.555
Trial × Line × Sex		0.096	0.794	0.290	0.694	0.766	0.803	0.956	0.667

Abbreviations: Floor1 Floor cohort 1, Floor2 Floor cohort 2, MAS marker-assisted selection line, REL Relaxed (control) line
1: Drip loss calculated as the difference in breast weight before and after 24 h chill
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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