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Table 4 Influence of dietary Met:Lys ratio in lactation diet on composition of colostrum and milk

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 sowsa
 Fat, % Colostrum 5.57 6.05 5.49 5.22 0.28 0.47 0.74 0.82
Milk of day 7 7.02 7.86 7.48 7.98 0.23 0.20 0.41 0.45
Milk of day 20 6.94 6.93 7.45 7.27 0.14 0.23 0.47 0.46
 Protein, % Colostrum 12.07 13.10 11.23 13.70 0.52 0.46 0.63 0.33
Milk of day 7 6.31 7.09 6.49 6.96 0.14 0.27 0.51 0.2
Milk of day 20 6.31 6.25 6.29 6.20 0.05 0.58 0.86 0.9
 Lactose, % Colostrum 4.90 4.59 5.17 4.65 0.09 0.82 0.74 0.1
Milk of day 7 6.61 6.46 6.60 6.17 0.09 0.088 0.16 0.20
Milk of day 20 6.73 6.68 6.54 6.85 0.07 0.71 0.40 0.45
 Total solids content, % Colostrum 30.01 31.19 29.30 30.91 0.47 0.83 0.92 0.49
Milk of day 7 27.53 29.01 28.19 28.78 0.29 0.24 0.40 0.32
Milk of day 20 27.48 27.38 27.87 27.85 0.15 0.27 0.54 0.6
 Moisture, % Colostrum 69.99 68.81 70.70 69.09 0.47 0.83 0.92 0.49
Milk of day 7 72.47 70.99 71.81 71.22 0.29 0.24 0.40 0.32
Milk of day 20 72.52 72.62 72.13 72.15 0.15 0.27 0.54 0.6
 Solid not fat, % Colostrum 20.75 21.41 20.09 22.11 0.44 0.42 0.59 0.38
Milk of day 7 16.46 17.08 16.59 16.67 0.09 0.87 0.50 0.16
Milk of day 20 16.50 16.37 16.31 16.48 0.06 0.84 0.32 0.61
  1. aThe number of samples of sows in each group was more than 9 but not equal; SEM, standard error of the mean