Skip to main content

Table 3 Effects of dietary protein/energy ratio and breed on growth performance of pigs

From: Effects of dietary protein/energy ratio on growth performance, carcass trait, meat quality, and plasma metabolites in pigs of different genotypes

Item Landrace pig Bama mini-pig SEM P-value
GB diets NRC diets GB diets NRC diets Breed Diet B × D
Nursery phase (n = 24)         
   Initial BW, kg 7.71a 7.64a 3.37b 3.38b 0.19 <0.001 0.88 0.83
   Final BW, kg 22.95a 23.06a 17.29b 17.91b 0.81 <0.001 0.66 0.76
   Average daily gain, g 390.80a 395.40a 253.10b 264.10b 15.36 <0.001 0.62 0.84
   Average daily feed intake, kg 0.76a 0.71a 0.62b 0.63b 0.03 <0.001 0.42 0.41
   Feed to gain ratio 1.97b 1.87b 2.53a 2.38a 0.07 <0.001 0.09 0.73
Growing phase (n = 16)         
   Initial BW, kg 24.74a 25.15a 20.55b 19.66b 0.66 <0.001 0.73 0.34
   Final BW, kg 61.82a 56.37b 38.81c 38.95c 1.70 <0.001 0.13 0.12
   Average daily gain, g 842.80a 709.60b 380.60c 401.80c 31.39 <0.001 0.09 0.02
   Average daily feed intake, kg 1.96a 1.64b 1.79b 1.68b 0.05 0.23 <0.001 0.04
   Feed to gain ratio 2.33a 2.43b 4.77a 4.65a 0.27 <0.001 0.98 0.70
Finishing phase (n = 8)         
   Initial BW, kg 65.03a 62.83a 44.07b 45.82b 1.07 <0.001 0.87 0.15
   Final BW, kg 91.03a 92.03a 51.40b 52.76b 1.46 <0.001 0.52 0.92
   Average daily gain, g 866.70b 973.30a 348.80c 330.50c 41.87 <0.001 0.40 0.24
   Average daily feed intake, kg 3.12a 3.07a 1.69b 1.83b 0.06 <0.001 0.59 0.22
   Feed to gain ratio 3.66b 3.19b 5.62a 5.79a 0.49 0.001 0.80 0.61
  1. a, b, c Mean values with unlike superscript letters were significantly different (P < 0.05)
  2. GB diets, Chinese conventional diets; B × D, breed × diet interaction