Table 1.
Analysed chemical composition and apparent digestibility coefficients of the eight commercial dry dog diets.
| Diet | A | B | C | D | E | F | G | H | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type of diet | BNB | BNB | PLB | EB | BNB | BNB | SPB | SPB | ||||||||
| Nutrient content (DM BASIS) from independent laboratory | ||||||||||||||||
| CP (%) | 30·6 | 26·0 | 24·5 | 23·8 | 26·0 | 26·6 | 20·9 | 29·6 | ||||||||
| PER (g/MJ) | 18 | 15 | 15 | 16 | 16 | 14 | 12 | 16 | ||||||||
| Hydroxyproline (%) | 0·49 | 0·55 | 0·70 | 0·81 | 0·70 | 0·65 | 0·17 | 0·94 | ||||||||
| CF (%) | 16·8 | 13·6 | 12·4 | 6·8 | 13·1 | 12·6 | 16·1 | 19·7 | ||||||||
| Omega 3 PUFA (%) | 0·39 | 0·19 | 0·19 | 0·16 | 0·31 | 0·25 | 1·84 | 0·54 | ||||||||
| Omega 6 PUFA (%) | 2·82 | 2·12 | 2·02 | 1·64 | 2·93 | 2·61 | 3·57 | 3·37 | ||||||||
| CFi (%) | 2·2 | 2·7 | 3·3 | 2·6 | 2·4 | 2·5 | 3·3 | 2·4 | ||||||||
| Ash (%) | 7·3 | 8·4 | 8·7 | 9·7 | 7·3 | 9·2 | 4·6 | 8·4 | ||||||||
| ME (kJ per 100 g) | 1590 | 1550 | 1470 | 1380 | 1420 | 1510 | 1630 | 1670 | ||||||||
| ME (kcal per 100 g) | 380 | 370 | 350 | 330 | 340 | 360 | 390 | 400 | ||||||||
| Digestibility results from the present study | ||||||||||||||||
| M | sd | M | sd | M | sd | M | sd | M | sd | M | sd | M | sd | M | sd | |
| dDM | 82·5 | 2·7 | 78·4 | 1·3 | 69·3 | 2·0 | 66·9 | 1·4 | 84·4 | 2·5 | 79·4 | 1·9 | 82·2 | 1·3 | 80·2 | 1·7 |
| dOM | 87 | 2·2 | 83 | 1·2 | 75·1 | 1·9 | 74·1 | 1·2 | 87·6 | 1·9 | 83·4 | 1·5 | 84·2 | 1·2 | 84·9 | 1·5 |
| dCP | 82·5 | 3·3 | 79·1 | 1·7 | 70·4 | 4·1 | 72·3 | 1·7 | 81·2 | 3·3 | 78·3 | 2·2 | 80·8 | 2·4 | 79·6 | 2·6 |
| dCF | 93·6 | 1·5 | 90·4 | 1·4 | 85·2 | 2·3 | 76·1 | 4·0 | 95·4 | 0·7 | 90·5 | 0·9 | 92·1 | 0·6 | 94·9 | 0·9 |
| dE | 86·9 | 2·4 | 82·6 | 1·2 | 74·4 | 2·1 | 72·6 | 1·6 | 87·7 | 2·0 | 83 | 1·4 | 85 | 1·1 | 85·6 | 1·6 |
| dPER (g/MJ) | 14 | 13 | 12 | 14 | 12 | 12 | 10 | 13 | ||||||||
| ME (kJ per 100 g) | 1630 | 1420 | 1260 | 1170 | 1550 | 1420 | 1630 | 1630 | ||||||||
| ME (kcal per 100 g) | 390 | 340 | 300 | 280 | 370 | 340 | 390 | 390 | ||||||||
| SCORES | ||||||||||||||||
| Magazine study (per 100 points) | 47 | 57 | 42 | 45 | 62 | 58 | 75 | 48 | ||||||||
| Digestibility study (per 100 points) | 76 | 56 | 30 | 30 | 72 | 52 | 60 | 64 | ||||||||
| Overall score (per 200 points) | 123 | 113 | 72 | 75 | 134 | 100 | 135 | 112 | ||||||||
Abbreviations: BNB, basic-nutrition brand; PLB, private label brand; EB, economy brand; SPB, super premium brand; CP, crude protein; PER, protein-to-energy ratio; CF, crude fat; CFi, crude fibre; ME, metabolisable energy; dPCR, digestible protein-to-energy ratio; dDM, DM apparent digestibility coefficient; dMO, organic matter apparent digestibility coefficient; dCP crude protein apparent digestibility coefficient; dCF, crude fat apparent digestibility coefficient; dE, energy apparent digestibility coefficient; M, mean.