3.5.1 Movements between premises.
Animals are moved in a single day across the country, highly
interconnected by roads. The majority (96%) of movement frequencies
aggregated by parish were between 1–100 (green arrows), 3.24% between
101–500 (blue arrows), and 0.76% > 500 (red arrows). The
directed edges depicted in Figure 9 evidenced the high parish
interrelationship across movements throughout the country. Movements
occurred within the same parish with an average distance of 23.83 km and
a maximum of 597.86 km. The median distances travelled between parishes
were 13 km, between markets 39 km, and 11 km from farms to markets
(Table 2). The most intense frequencies of movements (>
500) were at the centre of the country (Cotopaxi province with 31.17%),
in the north near the Colombian border (Carchi with 16.39%) and in the
northwest (Santo Domingo with 13.11%). Considering the number of
movements, Cotopaxi concentrates 21.04% as origin and 20.29% as
destination, followed by Santo Domingo with 11.79% as origin and
11.18% as destination, followed by Pichincha (SI 4) (Fig. 9).
Figure 9. Spatial representation of pig movement frequencies between
parishes in Ecuador. Province boundaries on map.