. 2017 Nov 9;12(11):e0187604. doi: 10.1371/journal.pone.0187604

Table 3. IMF content and fatty acid composition in longissimus dorsi of yaks fed diets supplying different energy levels.

Item^*	LE	ME	HE	SEM	P-value
IMF (g/100 g)	0.56^c	0.92^b	1.34^a	0.102	0.001
Fatty acid (mg/kg)
C14:0 Myristic acid	15.35^c	21.55^b	25.11^a	1.138	<0.001
C14:1 Myristoleic acid	3.33^c	4.14^b	5.73^a	0.291	<0.001
C15:0 Pentadecanoic acid	2.08^b	3.01^a ^b	4.03^a	0.308	0.020
C16:0 Palmitic acid	1951.06^c	2748.31^b	3367.25^a	174.237	<0.001
C16:1 Palmitoleic acid	69.80^c	81.91^b	118.14^a	5.60	<0.001
C17:0 Margaric acid	6.31^b	7.81^b	10.26^a	0.595	0.010
C17:1 Heptadecanoic acid	5.20^b	6.02^a ^b	8.44^a	0.566	0.038
C18:0 Stearic acid	1044.74^c	1242.88^b	1588.32^a	63.775	<0.001
C18:1n9c Oleic acid	1952.68^b	2441.40^a ^b	3059.18^a	186.659	0.038
C18:1n9t trans oleic acid	37.37^b	44.45^b	75.05^a	5.866	0.008
C18:2n6c Linolenic acid	64.49^b	66.39^b	80.41^a	2.846	0.029
C20:1 Eicosenoic acid	1.22^b	1.82^a	2.11^a	0.136	0.012
C20:3n3 Eicosatrienoic acid	0.71^b	1.14^a	1.31^a	0.085	0.002
C20:4n6 Arachidonic acid	8.61^c	11.81^b	18.81^a	1.185	<0.001
C20:5n3 EPA	1.84^b	2.22^a ^b	3.08^a	0.212	0.036
C22:6n3 DHA	1.26^b	1.54^a ^b	2.17^a	0.157	0.038
∑ SFA	3019.55^c	4023.57^b	4994.97^a	232.906	<0.001
∑ MUFA	2069.60^b	2579.74^a ^b	3268.65^a	195.509	0.027
∑ PUFA	76.91^b	83.09^b	105.78^a	4.134	0.002

^a,b,c Means in a row with different small letter superscripts differ significantly (P<0.05).

* IMF, intramuscular fat; ∑ SFA, saturated fatty acid (without any double bonds, C14:0-C18:0); ∑ MUFA, monounsaturated fatty acid, all fatty acids with a single double bond (C14:1-C20:1); ∑ PUFA, polyunsaturated fatty acid, all fatty acids with 2 or more double bonds (including C18:2n6c, C20:3n3, C20:4n6 and C20:5n3); EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid.

LE, low energy level; ME, medium energy level; HE, high energy level.