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Table 2 The effect of graded levels of whey with addition of citric acid on growth performance

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

Parameters T1 T2 T3 T4 T5 P value
Initial wt (kg) 0.968 ± 0.009 0.952 ± 0.009 0.954 ± 0.015 0.951 ± 0.005 0.955 ± 0.007 0.691
Final BW (kg) 1.955 ± 0.046c 2.009 ± 0.058c 2.099 ± 0.038bc 2.218 ± 0.078b 2.401 ± 0.065a ≤ 0.001
BWG (kg) 0.987 ± 0.049c 1.057 ± 0.060c 1.145 ± 0.032bc 1.267 ± 0.079b 1.447 ± 0.062a ≤ 0.001
FI (kg) 4.373 ± 0.66 4.445 ± 0.102 4.448 ± 0.123 4.527 ± 0.181 4.219 ± 0.074 0.437
FCR 4.48 ± 0.249a 4.25 ± 0.200ab 3.89 ± 0.044bc 3.60 ± 0.166c 2.95 ± 0.180d ≤ 0.001
PER 1.358 ± 0.087c 1.424 ± 0.067bc 1.539 ± 0.017bc 1.671 ± 0.082b 2.052 ± 0.115a ≤ 0.001
RGR (%) 67.394 ± 2.349d 71.197 ± 2.766cd 74.959 ± 1.365bc 79.678 ± 3.040ab 86.035 ± 2.065a ≤ 0.001
  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. BW body weight; BWG body weight gain; FI feed intake; FCR feed conversion ratio; PER protein efficiency ratio; RGR relative growth rate
  3. a–dMeans within the same row carrying different superscripts are significantly different at (P ≤ 0.05)