| Inger Hansen and Martin E. Smith |
| Authors are with the Planteforsk Tj tta Rural Development Centre, N-8860 Tj tta and the Norway North-Trondelag College, P.O. Box 145, N-7702, Steinkjer, Norway. |
Abstract |
| Livestock-guarding dogs are an effective way of protecting rangeland sheep from predators. However, open mountain/forest range and widely ranging sheep are factors that may make adaptation to Norwegian conditions difficult. This paper focuses on the dogs' working patterns and effectiveness under different working regimes. A 3,500 ha. unfenced forest/mountain range pasture in bear habitat comprised the research area in which 624 sheep from 2 herds grazed. The field trial lasted 3 months, and a total of 10 Great Pyrenees participated for various time intervals. Three different working regimes were evaluated: 1) loose dogs without the command of a dog handler (Method A); 2) loose dogs under the command of a dog handler (Method B); and 3) loose dogs guarding sheep inside a fenced, 1 km2 forest pasture (Method C). Nocturnal behavioural activity patterns and data on predation were recorded. Method A proved too uncontrolled for Norwegian conditions, because sheep dispersed too widely and dogs ranged too far, causing conflicts in nearby settlements with wildlife, and with livestock. Pasture dogs (C) were >3 times less active and were engaged in guarding activities < 50% as often as patrol dogs (B). However, they barked >15 times more frequently, and no sheep carcasses were found inside the fence. Therefore, Method C probably had the best preventive effect. |
| Key Words: Great Pyrenees, behavior, sheep, carnivores, depredation |