1 Subjects: “...traditional pig products...”

2 Subjects: “...pig manure...”

3 Subjects: “...pigs...”

4 Subjects: “...pigs...”

5 Subjects: “...pig slurry...”

6 Subjects: “...pig house...”

7 Subjects: “...pig house...”

8 “... in the Netherlands, namely laying hens, broilers and pigs (all monogastrics), and dairy cattle (ruminants). For eggs...”

9 “... and pig intensive production systems have become highly capital intensive, and they have resulted in many...”