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Table 3 Effects of lysine level fed during each phase on nursery pig performance a

From: Practical starter pig amino acid requirements in relation to immunity, gut health and growth performance

Items

Standardized ileal digestible lysine, %

 

d 0 to 7

1.35

1.35

1.35

1.35

1.55

1.55

1.55

1.55

 

d 7 to 21

1.15

1.15

1.35

1.35

1.15

1.15

1.35

1.35

Probability, P <

d 21 to 35

1.05

1.25

1.05

1.25

1.05

1.25

1.05

1.25

SEM

Phase 1

Phase 2

Phase 3

d 0 to 7

            

ADG, g

161

151

152

162

155

163

159

161

19.9

0.69

0.89

0.72

ADFI, g

171

164

157

164

145

150

149

162

15.0

0.37

0.94

0.55

G:F

0.962

0.926

0.965

0.997

1.054

1.089

1.074

0.984

0.059

0.01

0.93

0.63

d 7 to 21

            

ADG, g

363

365

366

371

346

333

370

375

15.8

0.41

0.18

0.98

ADFI, g

541

530

512

521

508

506

498

517

18.4

0.16

0.49

0.78

G:F

0.674

0.687

0.716

0.711

0.680

0.660

0.742

0.723

0.016

0.75

0.03

0.43

d 21 to 35

            

ADG, g

561

616

579

614

555

573

540

593

35.1

0.20

0.78

0.001

ADFI, g

934

915

943

956

907

883

883

925

34.6

0.37

0.53

0.85

G:F

0.601

0.674

0.614

0.643

0.613

0.649

0.612

0.640

0.031

0.60

0.39

<.0001

d 0 to 35

            

ADG, g

402

422

406

426

389

395

395

419

11.3

0.15

0.30

0.03

ADFI, g

745

726

730

747

711

701

696

732

20.5

0.38

0.74

0.65

G:F

0.645

0.692

0.666

0.683

0.658

0.676

0.681

0.688

0.011

0.52

0.07

0.001

BW, kg

            

d 0

5.71

5.70

5.73

5.68

5.71

5.75

5.71

5.71

0.05

0.59

0.24

0.43

d 7

6.84

6.76

6.79

6.81

6.80

6.89

6.83

6.83

0.19

0.67

0.91

0.85

d 21

11.93

11.86

11.95

12.00

11.67

11.55

12.01

12.09

0.32

0.54

0.14

0.94

d 35

19.78

20.64

20.05

20.59

19.44

19.57

19.57

20.38

0.36

0.14

0.37

0.04

  1. aA total of 320 weanling pigs (PIC 1050 barrows, initially 5.71 ± 0.05 kg and 21 d of age) were used in a 35-d trial with 8 pens per treatment. Phase 1, 2, and 3 diets were fed from d 0 to 7 (SID Lys 1.35 vs 1.55%), 7 to 21 (SID Lys 1.15 vs 1.35%), and 21 to 35 (SID Lys 1.45 vs 1.25%) after weaning, respectively. There were no interactions among the different phases. Nemecheck et al. [19].