Table 3 Association analysis between FTO SNP FM244720:g.400C>G and selected traits in Meishan × Pietrain F₂ pigs

Average daily gain

(110-210 days of age; g/day)

579 ± 24.75

605 ± 19.87

598 ± 12.98

583 ± 17.38

579 ± 15.77

0.31

Abdominal fat weight (kg)

0.67 ± 0.07^a

0.72 ± 0.05^ac

0.97 ± 0.04^b

0.85 ± 0.05^cd

0.86 ± 0.04^d

<0.0001

Back fat depth on m.l.l.t.

at 13th-14th rib (mm)

18.94 ± 1.09^a

19.0 ± 0.87^a

23.58 ± 0.57^b

21.17 ± 0.76^ac

22.74 ± 0.69^bc

<0.0001

Average back fat depth (mm)

25.69 ± 1.08^ac

25.09 ± 0.87^a

29.91 ± 0.57^b

26.93 ± 0.76^ac

27.98 ± 0.69^c

<0.0001

Shoulder fat depth (mm)

33.49 ± 1.29^a

34.27 ± 1.03^a

38.64 ± 0.68^b

35.99 ± 0.90^ac

37.40 ± 0.82^bc

0.0004

Fat depth at 10th rib (mm)

22.27 ± 1.03^ac

20.67 ± 0.82^a

25.30 ± 0.54^b

22.23 ± 0.72^ac

23.37 ± 0.65^c

<0.0001

Loin fat depth (mm)

21.32 ± 1.27^ac

20.34 ± 1.02^a

25.80 ± 0.66^b

22.57 ± 0.89^ac

23.17 ± 0.81^c

<0.0001

Fat area on m.l.l.t.

at 13th-14th rib (cm²)

18.43 ± 0.98^a

19.28 ± 0.78^ac

22.30 ± 0.51^b

20.01 ± 0.69^ac

21.18 ± 0.62^bc

0.0004

Lean cuts (%)

47.57 ± 0.67^a

48.10 ± 0.57^a

44.68 ± 0.35^b

45.35 ± 0.47^b

44.20 ± 0.43^b

<0.0001

Feed consumption

(110-210 days of age; kg)

209 ± 7.06^a

214 ± 5.67^a

230 ± 3.70^b

218 ± 4.96^a

223 ± 4.50^ab

0.006

Feed conversion (kg/kg)

3.73 ± 0.16^ab

3.60 ± 0.13^a

3.94 ± 0.09^b

3.82 ± 0.11^ab

4.05 ± 0.10^b

0.008