Table 4 Rearing parameters of calves
From: Adaptability of Polish Red cows to extensive conditions
Parameter | Experimental group | p-value | Total | ||||
|---|---|---|---|---|---|---|---|
EXT | TRAD | ||||||
X | SD | X | SD | X | SD | ||
Number of animals | 11 | Â | 11 | Â | Â | 22 | Â |
Birth weight (kg) | 32.0 | 2.5 | 33.4 | 3.6 | 0.320 | 32.7 | 3.1 |
Age at weaning (days) | 211.5 | 21.4 | 215.7 | 20.9 | 0.648 | 213.6 | 20.8 |
Body weight at weaning (kg) | 204.5 | 12.0 | 233.5 | 19.8 | 0.001 | 219.0 | 21.8 |
Daily gains until weaning (kg) | 0.82 | 0.08 | 0.93 | 0.08 | 0.003 | 0.88 | 0.10 |
210-day standardized body weight (kg) | 204.4 | 16.5 | 228.9 | 15.3 | 0.001 | 216.6 | 20.0 |
Mothers’ milk yield (kg) | 1655.2 | 157.4 | 1848.8 | 139.5 | 0.006 | 1752.0 | 175.9 |