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Table 2 Effects of weaning age on growth performance of nursery pigs fed diets with increasing levels of whey permeate at 7 to 11 kg BW

From: Impacts of weaning age on dietary needs of whey permeate for pigs at 7 to 11 kg body weight

Weaning age

21 da

25 db

 

P value

Whey permeatec, %

7.50

11.25

15.00

18.75

7.50

11.25

15.00

18.75

SEM

Age

Linear

Log-Linear

Age x Linear

BW, kg

 d 0

7.4

7.4

7.4

7.4

7.1

7.1

7.1

7.1

0.3

0.189

0.989

0.990

0.994

 d 10

11.1

11.2

11.3

11.6

10.4

10.5

10.7

10.7

0.4

0.020

0.320

0.329

0.852

 ADG, g/d

371

379

394

422

328

342

357

360

15

< 0.001

0.005

0.014

0.567

 ADFI, g/d

508

513

515

531

404

415

421

426

16

< 0.001

0.174

0.401

0.994

 G:F

0.73

0.74

0.76

0.80

0.81

0.83

0.85

0.85

0.02

< 0.001

0.002

0.014

0.352

 Mortality, %

0.0

0.5

0.0

0.5

0.0

1.0

0.5

0.5

0.5

0.425

0.535

0.574

0.999

 Fecal scorec

3.31

3.56

3.66

3.23

3.60

3.39

3.27

3.32

0.2

0.770

0.446

0.763

0.576

  1. aPigs were weaned at 21.2 ± 1.3 d of age and fed a common diet for 11 d until pigs reach 7 kg BW
  2. bPigs were weaned at 24.6 ± 1.1 d of age and fed a common diet for 2 d until pigs reach 7 kg BW
  3. cDietary treatments were supplemental levels of whey permeate in the diets (Agri-Mark, Inc., Middlebury, Vermont, USA)