Association of selected SNP with carcass and taste panel assessed meat quality traits in a commercial population of Aberdeen Angus-sired beef cattle

Table 5 Genotype means, standard errors, P values and estimates of additive and dominance effects for SNP with significant trait associations

	SNP	Genotype means ± se¹			Overall P-value²	a ± se^1,3	d ± se^1,4
	CAPN316	CC	CG	GG
Tenderometer score, kPa⁵		22.25 ± 1.16	24.24 ± 0.7	25.18 ± 0.67	0.01⁶	1.46 ± 0.52**	0.53 ± 0.61
Hindquarter weight, kg		75.67 ± 1.57	72.05 ± 0.84	71.84 ± 0.77	0.04	-1.92 ± 0.76*	-1.70 ± 0.92
Tenderness		6.00 ± 0.16	5.79 ± 0.08	5.63 ± 0.07	0.01⁶	-0.19 ± 0.08*	-0.03 ± 0.09
	UASMS2	CC	CT	TT
Overall liking		5.59 ± 0.08	5.55 ± 0.08	5.80 ± 0.10	0.02	0.10 ± 0.05*	-0.15 ± 0.06*
	DGAT1	AA	AG	GG
Sirloin weight after maturation, kg		8.31 ± 0.46	7.17 ± 0.12	7.14 ± 0.11	0.04	-0.59 ± 0.23*	-0.55 ± 0.23*
Sirloin fat depth, mm		11.11 ± 1.65	6.62 ± 0.4	6.53 ± 0.33	0.05	-2.29 ± 0.83*	-2.20 ± 0.87 *
	GHR	AA	AT	TT
Odour		5.64 ± 0.19	5.24 ± 0.08	5.16 ± 0.06	0.02	-0.24 ± 0.09**	-0.16 ± 0.11

¹ Mean values were adjusted for farm and averaged over sex. Estimate of the effect is expressed in units of the trait
² P-value for the overall genotype effect
³ Additive effect is estimated as the difference between the 2 homozygous means divided by 2
⁴ Dominance effect is estimated as the non-additive genetic effects or the deviation of the heterozygote from the mean of the 2 homozygotes
** P < 0.01 and * P < 0.05
⁵ Units for tenderometer score are kilopascals
⁶ Associations remain significant following correction for multiple testing (adjusted P-value was 0.01)

ISSN: 1297-9686