Table 1 Growth performance data and apparent total tract nutrient digestibility of crude nutrients in weaned pigs fed a control diet or a diet supplemented with 1% grape seed and grape marc meal extract (GSGME) or 1% spent hops (SH)

Initial body weight (kg)

9.8 ± 0.5

10.0 ± 0.5

9.9 ± 0.6

Final body weight (kg)

23.7 ± 2.6

24.1 ± 2.1

23.4 ± 2.0

Daily feed intake (g)¹

828 ± 115

789 ± 85

762 ± 53

Daily body weight gain (g)

497 ± 63

509 ± 74

497 ± 77

Gain:feed (g/kg)¹

579 ± 68

620 ± 53^#

638 ± 83^*

Crude protein

81.9 ± 3.5

81.0 ± 2.3

78.0 ± 1.4^*

Crude fiber

55.1 ± 11.8

51.4 ± 7.6

45.1 ± 8.7^*

Crude fat

65.0 ± 3.4

70.0 ± 3.0^*

66.2 ± 3.3

N-free extract

90.1 ± 2.4

89.9 ± 2.8

89.4 ± 1.1

Organic matter

80.3 ± 2.5

80.1 ± 2.3

78.7 ± 1.5^#