1. EBV Selection Required less time to apply genotype body composition
Association of melanocortin 4 receptor (MC4R) polymorphism with body composition and carcass traits of commercial pigs in Thailand
body composition
carcass traits
EBV
genotype
Selection
Required less time to apply

2. SL, shoulder length (cm)
Association of melanocortin 4 receptor (MC4R) polymorphism with body composition and carcass traits of commercial pigs in Thailand
Traits for study
BL, body length (cm)
SL, shoulder length (cm)
HL, ham length (cm)
RL, rump length
%Lean, percent lean
aLAM, loin eye area muscle adjust at 104 kg (kg)
D104, day during birth to body weight at 104 kg (day)
aBF, backfat thickness adjust at 104 kg (cm)
back

3. digested by the restriction endonuclease Taq I
Association of melanocortin 4 receptor (MC4R) polymorphism with body composition and carcass traits of commercial pigs in Thailand
digested by the restriction endonuclease Taq I AG GG AA
483 bp
500 bp
407 bp
76 bp
Figure 2 RFLP fingerprint on 2% agarose.
AA = 483 bp
AG = 483,407 and 76,
GG = 407,76

4. rg Low to Moderate Genetic response slow
Table1. Heritability of the traits (diagonal), genetic correlation (above diagonal) and phenotypic correlation (belowdiagonal) rg
Low to Moderate
Traits BL SL RL HL
aBF
aLAM
%Lean
D104
0.07
-0.08
-0.11
-0.21
0.30
-0.35
-0.44
-0.47
0.14
0.53
0.77
-0.22
0.33
0.35
-0.38
0.06
0.38
0.55
0.15
0.04
-0.07
-0.31
0.11
0.56
0.39
0.19
-0.37
0.26
0.40
-0.18
0.01
0.02
0.08
-0.06
0.29
-0.17
-0.73
-0.16
0.09
0.21
0.79
-0.03
-0.14
0.03
-0.54
0.22
-0.28
-0.25
-0.05
0.13
Genetic response slow
1 BL, body length (cm); SL, shoulder length (cm); RL, rump length; HL, ham length (cm); aBF, backfat thickness adjust at 104 kg (cm); aLAM, loin eye area muscle adjust at 104 kg (kg); %Lean, percent lean; D104, day during birth to body weight at 104 kg (day).

5. Conclusions h2 Low 1) Body composition and D104 2) Body composition rg
Association of melanocortin 4 receptor (MC4R) polymorphism with body composition and carcass traits of commercial pigs in Thailand
Conclusions h2
Low
Slow
1) Body composition
and D104
year
2) Body composition rg
Low to Moderate
3) Polymorphism of MC4R may not be appropriate to use as candidate gene in this populations
- to confirm the result, many sample must be included

6. ? ? ? Introduction Candidate genes approach Good meat texture
Low cholesterol
Good taste
Price higher 2-3 times
Thai Native Chickens
Low growth rate
Broiler ? ? ?
Improve growth traits
Growth traits
Candidate genes approach
(Wattanachant et al., 2004; Jaturasitha et al., 2008)

7. Average Daily Gain (ADG)
Materials and methods
Pradoo Hang Dam
Chee
(60 chickens/breed)
Data
Body Weight
(0, 4, 8, 12, 16 Wks)
Average Daily Gain (ADG)
(0- 4, 0-8, 0-12, 0-16 Wks)

8. Results and Discussion Marker- traits Analysis
IGF-I
cGH
IGFBP2
Not Associated
GHSR
T>C
A>C
G>A
C>T
Intron1
5’ UTR
Intron3
Intron2
Not Associated
EBV data
Pradoo Hang Dam
Chee

9. Conclusions Chee Pradoo Hang Dam Improve growth traits IGF-I cGH
Not Associated
Chee
Pradoo Hang Dam
IGF-I
cGH
marker-assisted selection
Improve growth traits