A new study on standardized ileal digestible lysine requirement for high lean weanling pigs confirms the industry recommendations

The mean standardized ileal digestible (SID) lysine requirement for 7-15 kg weanling pigs of the high-lean genetic line, fed corn-soybean meal-based diets to optimize body weight gain and gain:feed is 1.42%. This is the conclusion of a study conducted at the experimental pig farm of the University of Manitoba, Canada.
calendar icon 14 September 2020
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Table 1: Ingredients and nutrient compositions of the experimental diets (as-fed)
Table 1: Ingredients and nutrient compositions of the experimental diets (as-fed)

1 Provided the following nutrients (per kg of diet): Vitamins: A, 2200 IU; D3, 220 IU; E, 16 IU; K, 0.5 mg; B1, 1 mg; B2, 3.5 mg; B6, 7 mg; B12, 17.5 µg; calcium pantothenate, 10 mg; folic acid, 0.3 mg; niacin, 30 mg; biotin, 50 µg. Minerals: Cu, 6 mg (as copper sulfate); I, 0.14 mg (as calcium iodate); Fe, 100 mg (as ferrous sulfate); Mn, 4 mg (as manganese oxide); Se, 0.3 mg (as sodium selenite); Zn, 100 mg (as zinc oxide).

2 Values in parenthesis are analyzed values expressed in total content.

Table 2. Effect of dietary lysine level on performance and plasma urea nitrogen (PUN) concentration
Table 2. Effect of dietary lysine level on performance and plasma urea nitrogen (PUN) concentration

a-b Values in a row with different letters are different (P < 0.05).

Figure 1. SID Lys requirement for 7 to 15 kg pigs to optimize average daily gain (ADG) using quadratic broken line mode
Figure 1. SID Lys requirement for 7 to 15 kg pigs to optimize average daily gain (ADG) using quadratic broken line mode
Figure 2. SID Lys requirement for 7 to 15 kg pigs to optimize gain to feed ratio (G:F) using quadratic broken line mode
Figure 2. SID Lys requirement for 7 to 15 kg pigs to optimize gain to feed ratio (G:F) using quadratic broken line mode

Laurence Williams

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