Table 3.
Contents of AA and protein value of rapeseed cake and meals (g/kg dry matter, unless otherwise stated)a
| Rapeseed meal | ||||||
|---|---|---|---|---|---|---|
| Item | RSC I | A | B | C | D | E |
| Indispensable AA | ||||||
| Arg | 17.7 | 22.1 | 21.5 | 20.6 | 20.6 | 20.9 |
| His | 7.8 | 10.1 | 10.0 | 10.0 | 10.0 | 10.0 |
| Ile | 11.9 | 15.3 | 15.3 | 15.2 | 15.0 | 14.6 |
| Leu | 20.9 | 27.0 | 26.7 | 26.8 | 26.8 | 26.6 |
| Lysb | 17.0 | 19.5 | 18.8 | 17.7 | 17.2 | 17.2 |
| Met | 5.9 | 7.6 | 7.4 | 7.6 | 7.4 | 7.4 |
| Phe | 11.7 | 15.3 | 15.0 | 15.2 | 15.1 | 15.1 |
| Thr | 13.4 | 17.6 | 17.1 | 17.3 | 17.5 | 17.5 |
| Trp | – | 5.1 | 5.0 | 5.1 | 5.1 | 5.1 |
| Val | 15.6 | 19.7 | 19.6 | 19.7 | 19.1 | 18.6 |
| Dispensable AA | ||||||
| Ala | 13.2 | 17.1 | 16.8 | 17.0 | 17.0 | 16.8 |
| Asp | 21.8 | 28.3 | 27.7 | 27.9 | 27.6 | 27.4 |
| Cysb | 7.2 | 9.1 | 8.9 | 8.8 | 8.7 | 8.3 |
| Glu | 47.0 | 60.3 | 59.5 | 59.9 | 59.6 | 59.3 |
| Gly | 15.6 | 20.1 | 19.8 | 20.1 | 20.0 | 19.7 |
| Pro | 17.5 | 22.4 | 23.5 | 24.0 | 22.8 | 22.2 |
| Ser | 12.5 | 16.4 | 16.2 | 16.0 | 16.7 | 16.7 |
| Reactive Lysb | 13.8 | 16.0 | 15.2 | 13.1 | 12.5 | 13.3 |
| Lys:crude protein ratiob | 0.058 | 0.051 | 0.050 | 0.047 | 0.045 | 0.045 |
| Reactive Lys:crude protein ratio | 0.047 | 0.042 | 0.040 | 0.034 | 0.033 | 0.035 |
| Protein solubility, % | 66 | 42 | 41 | 33 | 32 | 12 |
RSC I = rapeseed cake one
aLinear regression analysis refers to the effect of residence time in the desolventizer/toaster on amino acid composition and protein quality of rapeseed meals A-D. Rapeseed meals A-D represent four differently processed rapeseed meals under standardized and defined conditions in a pilot plant (for details see Table 1)
bLinear decrease (P < 0.05)
–not determined