Table 4.
Means of creatine levels in muscle (CRM) and serum (CRS) of samples of breast and blood collected from broilers at 21 and 44 d old that were fed diets with different SID Arg:Lys ratios and control diets in trials 1 and 2.
| Traits | SID Arg: Lys ratio (%) |
P value |
SEM | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 94 | 100 | 106 | 112 | 118 | 124 | Control | ANOVA | Lin | Quad | ||
| Trial 1–21 d |
|||||||||||
| CRM1 (ppm) |
0.151* | 0.153* | 0.160* | 0.184* | 0.234 | 0.265* | 0.223 | <0.001 | <0.001 | 0.001 | 0.006 |
| Trial 2–44 d |
|||||||||||
| CRM2 (ppm) |
0.090 | 0.096 | 0.099 | 0.110* | 0.111* | 0.095 | 0.096 | <0.001 | 0.008 | 0.001 | 0.002 |
| CRS3 (μmol/L) |
92.6 | 97.7 | 100.1 | 124.6 | 138.6 | 135.1 | 116.1 | <0.001 | <0.001 | 0.959 | 3.390 |
⁎
Means followed by an asterisk on the same line differ from the control group by Dunnett's test (P ≤ 0.05).
1
Y = −0.2448057 + 0.0040014X; R2 = 0.88.
2
Y = −0.6149000 + 0.0128300X – 0.00005454 × 2; R2 = 0.71.
3
Y = −71.918100 + 1.7129000X; R2 = 0.89.
Y is the response variable, and X is the SID Arg:Lys ratio.
SEM = Standard Error of the Mean.