Table 1
The experimental treatments
Treatment A B C D
Concentrate type Conventional Organica Organic Organic
Concentrate feeding level according to scale 100% ad libitum 100% ad libitum 70% 70%
Roughage type ad libitum None None Barley/pea silage Clover grass sil.
Straw in the laying area + + + +
Outdoor area + + +
No. of pigs per treatment 40 40 40 40
No. of summer trials 2 2 2 2
No. of winter trials 2 2 2 2
No. of pen replicates per trial 2 2 2 2
No. of pen replicates per treatment totally 8 8 8 8
a Organic treatment, but without roughage.