Table 2. Open in new tab Integrity...

Item²	Feed-swap group	Control groups
No. of animals	175	175	84	84	72	72	88	88	71	71
Mean age, d	193	—	195	—	200	—	195	—	201	—
Total days on test	83	93	90	71	79	82	90	71	79	82
No. of days excluded	1	28	24	7	1	1	5	5	1	2
No. of days included	82	65	66	64	73	81	85	66	73	80
Average feed disappearance (AFD), %	98.8	96.6	98.2	97.1	99.1	97.9	99.4	97.3	99.1	98.0
Total feed station days (FSD)	1,061	1,860	900	710	1,406	820	900	710	1,406	820
Feed station days <95% AFD	29	627	115	117	22	64	19	128	22	69
Percentage of FSD <95% AFD	2.7	33.7	12.8	16.5	1.6	7.8	2.1	18.0	1.6	8.4
Feed station days <90% AFD	19	241	60	27	5	12	8	17	5	6
Pearson correlation
Correlation between DMI and MWT	0.73	0.65	0.59	0.68	0.72	0.78	0.70	0.55	0.67	0.68
Correlation between DMI and ADG	0.58	0.48	0.46	0.57	0.61	0.69	0.63	0.41	0.52	0.33
Correlation between DMI and EFI	0.82	0.71	0.69	0.73	0.86	0.86	0.84	0.60	0.78	0.72
Correlation between DMI and UBF	0.40	0.32	0.46	0.29	0.60	0.50	0.39	0.12	0.40	0.33
Coefficient of determination
Variation in DMI ~ADG, MWT	0.64	0.48	0.42	0.54	0.71	0.75	0.70	0.36	0.58	0.48
Variation in DMI ~ADG, MWT, UBF	0.67	0.50	0.49	0.54	0.74	0.76	0.71	0.36	0.60	0.52

Item²

Feed-swap group

Control groups

Finisher-fed

Grower-fed

Yr
1-P1

Yr
1-P2

Yr
2-P1

Yr
2-P2

Yr
3-P1

Yr
3-P2

Yr
2-P1

Yr
2-P2

Yr
3-P1

Yr
3-P2

No. of animals

175

Mean age, d

193

—

195

—

200

—

195

—

201

—

Total days on test

No. of days excluded

No. of days included

Average feed disappearance (AFD), %

98.8

96.6

98.2

97.1

99.1

97.9

99.4

97.3

99.1

98.0

Total feed station days (FSD)

1,061

1,860

900

710

1,406

820

900

710

1,406

820

Feed station days <95% AFD

627

115

117

128

Percentage of FSD <95% AFD

2.7

33.7

12.8

16.5

1.6

7.8

2.1

18.0

1.6

8.4

Feed station days <90% AFD

241

Pearson correlation

Correlation between DMI and MWT

0.73

0.65

0.59

0.68

0.72

0.78

0.70

0.55

0.67

0.68

Correlation between DMI and ADG

0.58

0.48

0.46

0.57

0.61

0.69

0.63

0.41

0.52

0.33

Correlation between DMI and EFI

0.82

0.71

0.69

0.73

0.86

0.84

0.60

0.78

0.72

Correlation between DMI and UBF

0.40

0.32

0.46

0.29

0.60

0.50

0.39

0.12

0.40

0.33

Coefficient of determination

Variation in DMI ~ADG, MWT

0.64

0.48

0.42

0.54

0.71

0.75

0.70

0.36

0.58

0.48

Variation in DMI ~ADG, MWT, UBF

0.67

0.50

0.49

0.54

0.74

0.76

0.71

0.36

0.60

0.52

Item²	Feed-swap group	Control groups
No. of animals	175	175	84	84	72	72	88	88	71	71
Mean age, d	193	—	195	—	200	—	195	—	201	—
Total days on test	83	93	90	71	79	82	90	71	79	82
No. of days excluded	1	28	24	7	1	1	5	5	1	2
No. of days included	82	65	66	64	73	81	85	66	73	80
Average feed disappearance (AFD), %	98.8	96.6	98.2	97.1	99.1	97.9	99.4	97.3	99.1	98.0
Total feed station days (FSD)	1,061	1,860	900	710	1,406	820	900	710	1,406	820
Feed station days <95% AFD	29	627	115	117	22	64	19	128	22	69
Percentage of FSD <95% AFD	2.7	33.7	12.8	16.5	1.6	7.8	2.1	18.0	1.6	8.4
Feed station days <90% AFD	19	241	60	27	5	12	8	17	5	6
Pearson correlation
Correlation between DMI and MWT	0.73	0.65	0.59	0.68	0.72	0.78	0.70	0.55	0.67	0.68
Correlation between DMI and ADG	0.58	0.48	0.46	0.57	0.61	0.69	0.63	0.41	0.52	0.33
Correlation between DMI and EFI	0.82	0.71	0.69	0.73	0.86	0.86	0.84	0.60	0.78	0.72
Correlation between DMI and UBF	0.40	0.32	0.46	0.29	0.60	0.50	0.39	0.12	0.40	0.33
Coefficient of determination
Variation in DMI ~ADG, MWT	0.64	0.48	0.42	0.54	0.71	0.75	0.70	0.36	0.58	0.48
Variation in DMI ~ADG, MWT, UBF	0.67	0.50	0.49	0.54	0.74	0.76	0.71	0.36	0.60	0.52

Table 2.

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Integrity checks for the data collected on each feeding regimen for the 3 groups for the 3 yr¹

Item²	Feed-swap group						Control groups
	Feed-swap group						Finisher-fed		Grower-fed
	Yr 1-P1	Yr 1-P2	Yr 2-P1	Yr 2-P2	Yr 3-P1	Yr 3-P2	Yr 2-P1	Yr 2-P2	Yr 3-P1	Yr 3-P2
No. of animals	175	175	84	84	72	72	88	88	71	71
Mean age, d	193	—	195	—	200	—	195	—	201	—
Total days on test	83	93	90	71	79	82	90	71	79	82
No. of days excluded	1	28	24	7	1	1	5	5	1	2
No. of days included	82	65	66	64	73	81	85	66	73	80
Average feed disappearance (AFD), %	98.8	96.6	98.2	97.1	99.1	97.9	99.4	97.3	99.1	98.0
Total feed station days (FSD)	1,061	1,860	900	710	1,406	820	900	710	1,406	820
Feed station days <95% AFD	29	627	115	117	22	64	19	128	22	69
Percentage of FSD <95% AFD	2.7	33.7	12.8	16.5	1.6	7.8	2.1	18.0	1.6	8.4
Feed station days <90% AFD	19	241	60	27	5	12	8	17	5	6
Pearson correlation
Correlation between DMI and MWT	0.73	0.65	0.59	0.68	0.72	0.78	0.70	0.55	0.67	0.68
Correlation between DMI and ADG	0.58	0.48	0.46	0.57	0.61	0.69	0.63	0.41	0.52	0.33
Correlation between DMI and EFI	0.82	0.71	0.69	0.73	0.86	0.86	0.84	0.60	0.78	0.72
Correlation between DMI and UBF	0.40	0.32	0.46	0.29	0.60	0.50	0.39	0.12	0.40	0.33
Coefficient of determination
Variation in DMI ~ADG, MWT	0.64	0.48	0.42	0.54	0.71	0.75	0.70	0.36	0.58	0.48
Variation in DMI ~ADG, MWT, UBF	0.67	0.50	0.49	0.54	0.74	0.76	0.71	0.36	0.60	0.52

Item²	Feed-swap group						Control groups
	Feed-swap group						Finisher-fed		Grower-fed
	Yr 1-P1	Yr 1-P2	Yr 2-P1	Yr 2-P2	Yr 3-P1	Yr 3-P2	Yr 2-P1	Yr 2-P2	Yr 3-P1	Yr 3-P2
No. of animals	175	175	84	84	72	72	88	88	71	71
Mean age, d	193	—	195	—	200	—	195	—	201	—
Total days on test	83	93	90	71	79	82	90	71	79	82
No. of days excluded	1	28	24	7	1	1	5	5	1	2
No. of days included	82	65	66	64	73	81	85	66	73	80
Average feed disappearance (AFD), %	98.8	96.6	98.2	97.1	99.1	97.9	99.4	97.3	99.1	98.0
Total feed station days (FSD)	1,061	1,860	900	710	1,406	820	900	710	1,406	820
Feed station days <95% AFD	29	627	115	117	22	64	19	128	22	69
Percentage of FSD <95% AFD	2.7	33.7	12.8	16.5	1.6	7.8	2.1	18.0	1.6	8.4
Feed station days <90% AFD	19	241	60	27	5	12	8	17	5	6
Pearson correlation
Correlation between DMI and MWT	0.73	0.65	0.59	0.68	0.72	0.78	0.70	0.55	0.67	0.68
Correlation between DMI and ADG	0.58	0.48	0.46	0.57	0.61	0.69	0.63	0.41	0.52	0.33
Correlation between DMI and EFI	0.82	0.71	0.69	0.73	0.86	0.86	0.84	0.60	0.78	0.72
Correlation between DMI and UBF	0.40	0.32	0.46	0.29	0.60	0.50	0.39	0.12	0.40	0.33
Coefficient of determination
Variation in DMI ~ADG, MWT	0.64	0.48	0.42	0.54	0.71	0.75	0.70	0.36	0.58	0.48
Variation in DMI ~ADG, MWT, UBF	0.67	0.50	0.49	0.54	0.74	0.76	0.71	0.36	0.60	0.52

¹The feed-swap group was fed the grower in period 1 (P1) followed by the finisher diet in period 2 (P2), the finisher-fed group was fed the finisher diet in both periods, and the grower-fed group was fed the grower diet in both periods.

²Feed station days (FSD) is calculated as the product of the days on test and the number of feeding nodes or bunks; MWT = mid metabolic BW; UBF = ultrasound backfat; EFI = expected feed intake.

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