Modelling Nutrient Utilization in Sows: A Way Towards the Optimization of Nutritional Supplies - Nutritional Modelling for Pigs and Poultry - page 59

(a) 70

Parity 1 L Parity 2 L Parity 3 L Parity 4 L

60

50

40

Excess
Deficit
Valorized

30

20

10

0

0 0 100 150 200 250 300 350 400 450 500 550

(b) 70

Parity 1 L Parity 2 L Parity 3 L Parity 4 L

60

50

Excess
Deficit
Valorized

40

30

20

10

0

0 0 100 150 200 250 300 350 400 450 500 550

(c)

70

Parity 1 L Parity 2 L Parity 3 L Parity 4 L

60

50

40

Excess
Deficit
Valorized

30

20

10

0

0 0 100 150 200 250 300 350 400 450 500 550

(d)

25

Parity 1 L Parity 2 L Parity 3 L L

Parity 4

20

15

Excess
Deficit
Valorized

10

5

0

0 50 100 150 200 250

Time (days)

300 350 400 450 500 550

Fig. 4.5. Simulated effect of different gestation feeding strategies on the utilization of ileal digestible lysine.
(a) One diet, (b) two diets in multiparous sows with a change at 80 days of gestation, (c) two diets mixed in
adequate proportions to meet lysine and apparent digestible phosphorus requirements, and on the
utilization of digestible phosphorus (d) with the same feeding strategy as (c).