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

Hereditas

Table 1 Ascites incidence and cardiac hypertrophy (RVTV) for the two hypobaric trials comparing the MAS and REL lines overall and by gender

Item	n	RVTV	Ascites
Item	n	RVTV	No	Yes	Percent, %	Difference, %
Hypobaric trial 1
Sex
Male	274	0.305	237	37	13.50	28.00
Female	304	0.321	247	57	18.75	28.00
Line
MAS	332	0.310	288	44	13.25	34.83
REL	246	0.318	196	50	20.33	34.83
Interactions
Male × MAS	155	0.299	137	18	11.61	27.27
Male × REL	119	0.314	100	19	15.97	27.27
Female × MAS	177	0.319	151	26	14.69	39.82
Female × REL	127	0.323	96	31	24.41	39.82
P-value
Sex		0.009			0.047
Genetic Line		0.160			0.041
Sex × Line		0.367			0.742
Hypobaric Trial 2
Sex
Male	186	0.387	108	78	41.94	30.47
Female	247	0.421	98	149	60.32	30.47
Line
MAS	212	0.403	108	104	49.06	11.86
REL	221	0.410	98	123	55.66	11.86
Interactions
Male × MAS	91	0.39	58	33	36.26	23.44
Male × REL	95	0.39	50	45	47.37	23.44
Female × MAS	121	0.42	50	71	58.68	5.21
Female × REL	126	0.43	48	78	61.90	5.21
P-value
Sex		< 0.001			< 0.001
Genetic Line		0.404			0.162
Sex × Line		0.550			0.415

ISSN: 1601-5223