Table 6.
Effects of dietary supplementation of glutamic acid to reduced protein diets on serum BUN and creatinine in weanling pigs at d 7, 21 and 42 (mg/dL). 1,2
| Item | PC | NC | NC1 | NC2 | NC3 | NC4 | SEM |
P-value |
||
|---|---|---|---|---|---|---|---|---|---|---|
| PC vs. NC | Linear | Quadratic | ||||||||
| d 7 | ||||||||||
| BUN | 6.25 | 6.00 | 6.00 | 6.25 | 6.50 | 6.50 | 0.50 | 0.728 | 0.341 | 1.000 |
| Creatinine | 1.19 | 1.18 | 1.18 | 1.20 | 1.22 | 1.23 | 0.03 | 0.714 | 0.162 | 0.917 |
| d 21 | ||||||||||
| BUN | 6.50 | 6.00 | 6.25 | 6.75 | 6.75 | 7.00 | 0.54 | 0.526 | 0.117 | 0.780 |
| Creatinine | 1.18 | 1.16 | 1.17 | 1.19 | 1.23 | 1.24 | 0.04 | 0.702 | 0.100 | 0.958 |
| d 42 | ||||||||||
| BUN | 6.75 | 6.25 | 6.50 | 6.75 | 7.00 | 7.25 | 0.51 | 0.502 | 0.119 | 1.000 |
| Creatinine | 1.19 | 1.18 | 1.16 | 1.19 | 1.21 | 1.23 | 0.04 | 0.928 | 0.166 | 0.496 |
BUN = blood urea nitrogen.
1
Values represent the means of 4 pens with 2 pigs per pen.
2
PC (positive control), the basal standard protein diet with the Lys-to-Glu ratio at 1:2.35; NC (negative control), NC1, NC2, NC3, and NC4, the basal diet with 2% CP reduction and Lys-to-Glu ratios at 1:2.25, 1:2.30, 1:2.35, 1:2.40, and 1:2.45, respectively.