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Table 5 Effects of the plane of nutrition on growth of finishing pigs born from the sires with a high weight gain potential

From: Effects of sires with different weight gain potentials and varying planes of nutrition on growth of growing-finishing pigs

  HP Gr1) MP Gr1) LP Gr1)   P-value
Item MP F1), 2) MP F LP F1), 3) SEM Gr F S1) Gr × F F × S
  B1) G1) B G B G  
Initial wt, kg 52.8 47.0 53.7 47.0 45.8 44.5 1.9 0.01 <0.01 <0.01 <0.01 0.10
Days on feed             
  Phase (P) 1 31 31 30 31 37 37       
  P 2 38 38 37 37 38 38       
Final wt, kg             
  P 1 82.2 78.3 82.4 76.1 81.8 78.0 2.8 0.95 0.96 0.05 <0.01 0.80
  P 2 119.3 111.0 111.4 109.9 121.5 118.3 3.3 0.02 0.01 0.11 <0.01 1.00
ADG             
  P 1 0.95 1.01 0.95 0.95 0.97 0.91 0.04 0.60 0.50 0.94 <0.01 0.18
  P 2 0.97 0.86 0.81 0.91 1.05 1.06 0.04 <0.01 <0.01 0.87 <0.01 0.79
  Overall 0.96 0.93 0.88 0.93 1.01 0.98 0.03 <0.01 <0.01 0.95 <0.01 0.35
Days to 115 kg 178.8 186.8 178.2 179.7 180.7 184.5 4.1 0.58 0.72 0.07 <0.01 0.38
Carcass wt, kg 89.3 81.8 84.8 85.2 87.7 86.9 2.1 0.48 0.23 0.13 <0.01 0.51
Dressing, % 74.8 73.7 74.5 75.4 73.9 73.4 0.8 0.33 0.23 0.78 <0.01 0.76
BFT4), mm 21.7 23.3 23.0 25.9 26.5 26.0 1.1 <0.01 <0.01 0.31 <0.01 0.10
  1. 1)HP, high plane; MP, medium plane; LP, low plane; Gr, grower; F, finisher; B, barrow; G, gilt; S, sex. Data are least squares means of 10 animals in each plane of nutrition × sex.
  2. 2)Provided with the MP and LP finisher diets during the finisher phases 1 and 2, respectively (see Table 1). The average ADFI during the phases 1 and 2 were 2.40 kg and 3.96 kg, respectively.
  3. 3)Provided with the LP finisher during both phases 1 and 2 (see Table 1). The average ADFI during the phases 1 and 2 for the pigs born from both groups of sires with the medium (see Table 4) and high weight gain potentials were 2.89 and 4.10 kg, respectively.
  4. 4)Average of backfat thickness measurements between the 11 and 12th ribs and at the last rib adjusted for a 115-kg liveweight.