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Table 4 The effect of graded levels of whey with addition of citric acid on digestion coefficient (DC) of nutrients (%) on dry matter basis

From: Impacts of supplementing growing rabbit diets with whey powder and citric acid on growth performance, nutrient digestibility, meat and bone analysis, and gut health

DC T1 T2 T3 T4 T5 P-value
DM 73.70 ± 0.21c 75.34 ± 0.33bc 77.06 ± 1.67b 80.72 ± 0.66a 82.31 ± 0.86a ≤ 0.001
CP 58.49 ± 0.50b 58.57 ± 0.84b 62.36 ± 3.11b 71.40 ± 1.28a 76.18 ± 0.63a ≤ 0.001
CF 22.78 ± 2.47c 27.59 ± 1.06bc 31.47 ± 1.88b 42.40 ± 2.40a 45.51 ± 1.76a ≤ 0.001
Ash 51.07 ± 1.02c 58.78 ± 0.96b 59.72 ± 1.91b 70.01 ± 1.53a 70.95 ± 2.01a ≤ 0.001
EE 52.11 ± 1.92b 55.00 ± 1.83b 60.22 ± 4.57ab 66.97 ± 2.69a 68.45 ± 1.39a 0.006
NFE 49.77 ± 2.71 53.33 ± 0.18 54.27 ± 5.59 56.94 ± 1.32 62.37 ± 2.32 0.118
  1. T1, basal diet with no additives; T2, basal diet supplemented with citric acid (10 g/kg) and no whey; T3, T2 + whey powder (7.5 g/kg); T4, T2 + whey powder(15 g/kg); T5, T2 + whey powder (22.5 g/kg)
  2. DM dry matter; CP crude protein; CF crude fiber; Ash ash; EE ether extract; NFE nitrogen free extract
  3. a–cMeans within the same row carrying different superscripts are significantly different at (P ≤ 0.05)