Skip to main content

Table 3 Effect of dietary Met:Lys ratio in the lactation diet on growth performance of piglets

From: Different dietary methionine to lysine ratios in the lactation diet: effects on the performance of sows and their offspring and methionine metabolism in lactating sows

Items Met:Lys SEM P-value
0.27 0.37 0.47 0.57 Linear Quadratic Feed
No. of sows 27 30 28 31     
Litter size, number/litter
 After cross-fostering 11.26 11.5 11.18 11.42 0.09 0.85 0.98 0.58
 At day 7 10.63 10.87 10.14 10.45 0.12 0.24 0.49 0.15
 At day 14 10.22 10.47 9.68 10.13 0.12 0.34 0.56 0.11
 Pigs weaned 9.89 10.13 9.36 9.97 0.13 0.68 0.68 0.15
 Survival rate of piglets, % 87.91 88.20 84.29 87.45 1.02 0.62 0.65 0.53
Piglet mean BW, kge
 After cross-fostering 1.78 1.78 1.74 1.76 0.01 0.24 0.41 0.60
 At day 7c 2.78B 3.13A 3.01AB 3.04A 0.02 0.15 0.33 < 0.0001
 At day 14 4.78 5.11 5.07 5.07 0.03 0.26 0.49 0.12
 At day 21d 6.85b 7.07ab 7.55a 7.25ab 0.04 0.06 0.08 0.02
Piglet ADG, g/de
 Week 1c 143B 191A 174AB 179A 2 < 0.01 < 0.001 < 0.001
 Week 2 280 288 289 285 2 0.83 0.98 0.94
 Week 3 289 300 294 307 2 < 0.001 < 0.001 0.60
 Days 1–21 243 261 256 260 1 0.01 < 0.01 0.25
Litter weight, kge
 After cross-fostering 20.48 20.34 19.46 20.04 0.33 0.47 0.66 0.71
 At day 7 31.54 32.13 31.25 31.54 0.52 0.47 0.75 0.88
 At day 14 51.6 51.63 50.11 50.86 0.76 0.38 0.60 0.84
 At day 21 70.53 71.24 69.10 71.23 1.02 0.80 0.84 0.85
  1. SEM standard error of the mean, BW body weight, ADG average daily gain
  2. c, dMeans in the same row with different letters differ significantly; the different lowercase letters represent P < 0.05, and the different capital letters represent P < 0.01
  3. eThe results of piglet mean BW, ADG and litter weight are expressed as Lsmeans