Table 3 Effects of breed and residual feed intake adjusted for backfat thickness (RFIfat) on fatty acid proportion (%) in subcutaneous tissues and performance traits of beef cattle.

From: Breed dependent regulatory mechanisms of beneficial and non-beneficial fatty acid profiles in subcutaneous adipose tissue in cattle with divergent feed efficiency

Trait*	ANG¹			CHAR²			KC³			SEM	p value
Trait*	H-RFIfat⁴ (n = 16)	L-RFIfat⁵ (n = 14)	p value^#	H-RFIfat (n = 17)	L-RFIfat (n = 17)	p value^#	H-RFIfat (n = 18)	L-RFIfat (n = 21)	p value^#	SEM	Breed	RFIfat	Breed × RFIfat
14:0	3.75^bc	3.89^abc	0.463	4.32^a	4.13^ab	0.426	3.66^c	4.05^abc	0.126	0.069	0.029	0.405	0.197
16:0	28.07^a	28.29^a	0.769	27.01^ab	26.16^b	0.156	26.21^b	27.67^a	0.029	0.200	0.003	0.466	0.038
18:0	12.13	11.56	0.566	11.98	11.85	0.863	11.02	10.81	0.791	0.240	0.159	0.534	0.933
SFA	45.90^a	45.79^a	0.903	45.29^a	43.99^ab	0.204	42.64^b	44.30^ab	0.209	0.333	0.014	0.895	0.156
BCFA	1.32^c	1.44^bc	0.232	1.67^a	1.61^ab	0.549	1.43^c	1.38^c	0.496	0.028	< .0001	0.928	0.299
SFA + BCFA	47.22^a	47.23^a	0.986	46.96^a	45.60^ab	0.207	44.06^b	45.68^ab	0.237	0.347	0.019	0.894	0.183
c9-16:1	4.84^c	4.93^bc	0.843	5.51^abc	5.77^a	0.523	5.39^abc	5.66^ab	0.457	0.116	0.025	0.370	0.936
c9-18:1	38.01^ab	37.69^ab	0.720	36.25^b	37.48^b	0.162	39.29^a	37.97^ab	0.186	0.274	0.024	0.804	0.134
c11-18:1	1.69	1.67	0.908	1.88	1.99	0.485	1.98	1.87	0.549	0.049	0.072	0.953	0.615
t10-18:1	1.11^ab	1.09^ab	0.913	1.29^a	1.33^a	0.804	1.06^ab	0.95^b	0.456	0.050	0.039	0.767	0.790
trans-18:1	2.48^c	2.51^c	0.889	3.08^a	3.05^ab	0.880	2.64^bc	2.44^c	0.337	0.069	0.001	0.604	0.744
MUFA	50.91^b	50.86^b	0.963	50.72^b	52.21^ab	0.169	53.56^a	52.17^ab	0.301	0.343	0.049	0.982	0.207
ADFA	0.44^b	0.45^b	0.822	0.54^a	0.53^a	0.798	0.55^a	0.53^a	0.364	0.010	< .0001	0.607	0.757
CLA	0.27^b	0.28^b	0.902	0.23^b	0.27^b	0.413	0.47^a	0.43^a	0.210	0.014	< .0001	0.925	0.418
n-6	1.01^c	1.02^c	0.798	1.36^a	1.23^b	0.097	1.19^b	1.03^c	0.002	0.022	< .0001	0.012	0.122
18:3n-3	0.12^b	0.12^b	0.969	0.14^a	0.12^ab	0.107	0.13^ab	0.12^b	0.446	0.003	0.145	0.195	0.543
PUFA	1.13^c	1.14^c	0.828	1.51^a	1.36^b	0.082	1.32^b	1.15^c	0.003	0.023	< .0001	0.013	0.140
PUFA/SFA	0.024^b	0.025^b	0.778	0.033^a	0.031^a	0.198	0.031^a	0.026^b	0.003	0.001	< .0001	0.015	0.074
n-6/n-3	9.06^b	9.13^ab	0.928	9.88^ab	10.42^a	0.435	9.77^ab	8.83^b	0.042	0.184	0.049	0.765	0.212
FA ratio	0.025^c	0.027^bc	0.512	0.030^bc	0.029^bc	0.687	0.036^a	0.031^ab	0.093	0.001	0.0004	0.479	0.288
SCD proxy	0.27^ab	0.28^ab	0.647	0.27^b	0.26^b	0.912	0.30^a	0.30^a	0.999	0.005	0.013	0.841	0.924
DMI (kg)	12.49^a	10.73^c	0.001	11.87^ab	9.83^d	< .0001	11.29^bc	9.24^d	< .0001	0.156	< .0001	< .0001	0.826
ADG (kg)	1.62^ab	1.79^a	0.132	1.65^ab	1.62^ab	0.661	1.54^b	1.51^b	0.762	0.027	0.021	0.465	0.206
Backfat thickness (mm)	11.13^a	11.28^a	0.899	8.06^b	8.25^b	0.830	10.74^a	11.93^a	0.271	0.332	< .0001	0.397	0.720
Marbling score	433.33^a	409.29^ab	0.257	400.00^abc	381.18^bc	0.331	380.33^bc	367.37^c	0.370	5.520	0.002	0.078	0.912

*c = cis; t = trans; SFA (sum of saturated fatty acid) = 10:0 + 12:0 + 14:0 + 15:0 + 16:0 + 17:0 + 18:0 + 19:0 + 20:0; BCFA (sum of branched chain fatty acid) = iso-14:0 + iso-15:0 + anteiso-15:0 + iso-16:0 + iso-17:0 + anteiso-17:0 + iso-18:0; SFA + BCFA = sum of SFA and BCFA; trans-18:1 (sum of trans-18:1) = t6-18:1 + t9-18:1 + t10-18:1 + t11-18:1 + t12-18:1 + t13-/t14-18:1; MUFA (sum of monounsaturated fatty acid) = c9-14:1 + c7-16:1 + c9-16:1 + c11-16:1 + c9-17:1 + c9-18:1 + c11-18:1 + c12-18:1 + c13-18:1 + c14-18:1 + t6-18:1 + t9-18:1 + t10-18:1 + t11-18:1 + t12-18:1 + t13-/t14-18:1 + c9-20:1 + c11-20:1; ADFA (sum of atypical dienes fatty acid) = c9,t14-/c9,t13-18:2 + c9,t15-18:2 + c9,t12-18:2 + t11,c15-18:2 + c9,c15-18:2; CLA (sum of conjugated linoleic acid) = t7,c9-18:2 + c9,t11-18:2 + t9,c11-18:2 + t11,t13-18:2 + t7,t9-/t10,t12-18:2; n-6 (sum of omega 6 fatty acids) = 18:2n-6 + 20:3n-6 + 20:4n-6; n-3 (sum of omega 3 fatty acids) = 18:3n-3; PUFA (sum of polyunsaturated fatty acid) = 18:2n-6 + 20:3n-6 + 20:4n-6 + 18:3n-3; PUFA/SFA = ratio of PUFA to SFA; n-6/n-3 = ratio of n − 6 to n − 3 PUFA; FA ratio = (18:3n-3 + c9,t11-18:2 + t11-18:1)/(14:0 + 16:0 + t10-18:1); SCD proxy (stearoyl-CoA desaturase proxy) = c9-14:1/(c9-14:1 + 14:0); DMI = dry matter intake; ADG = average daily gain.
^#Statistical analysis was performed within each breed.
¹Angus breed; ²Charolais breed; ³Kinsella Composite breed; ⁴High RFIfat steers (RFIfat > 0.5); ⁵Low RFIfat steers (RFIfat < − 0.5).
Means in the same row with different superscripts (a, b, c, d) indicate significance (p < 0.05).
Only major FAs/FA groups are listed in this table.

Back to article page

Table 3 Effects of breed and residual feed intake adjusted for backfat thickness (RFIfat) on fatty acid proportion (%) in subcutaneous tissues and performance traits of beef cattle.

Search

Quick links