Publications by authors named "K A Ryeng"
The present study aimed to investigate the relationship between shooting angle to the head and animal welfare outcomes in the hunt of young harp seals (). The study population consisted of young harp seals belonging to the Greenland Sea harp seal population. A sample of 171, 2-7 weeks old, weaned harp seals of both sexes were included.
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- Harbour porpoises are the only native cetaceans in the German North and Baltic Seas and serve as hosts for specific nematodes that can cause chronic gastric issues.
- The taxonomy of the nematodes affecting porpoises is complicated due to closely related sibling species, with many species identifiable primarily through molecular techniques rather than morphology.
- The study utilized Restriction Fragment Length Polymorphism (RFLP) analysis to successfully identify various anisakid nematode species in porpoises from the North and Baltic Seas, highlighting the predominance of one species and the detection of hybrids.
Background: In a project to determine the causes of winter mortality in reindeer in Finnmark County, northern Norway, the most frequent diagnosis turned out to be complete emaciation, despite several of the reindeer having been given silage for up to 4 weeks before they died. The present paper describes autopsy results and other findings in these animals.
Methods: Autopsies were made of 32 reindeer carcasses, and 28 of these were diagnosed as completely emaciated based on lack of visible fat and serous atrophy of subepicardial and bone marrow fat.
Twelve reindeer (Rangifer tarandus tarandus) were immobilized by hand injection in indoor stalls with established optimal hand-injection doses of medetomidine-ketamine and then moved to outside paddocks where they were immobilized again with the same dose by dart. The reindeer in paddocks were immobilized a second time with a 50% higher dose, hereafter referred to as the optimal darting dose. Mean time to first sign of sedation was longer and mean induction time was significantly longer (55% and 79%, respectively) when the optimal hand-injection dose was dart injected versus hand injected.
View Article and Find Full Text PDFObjective: To evaluate clinical effects and repeatability of clinical effects for an optimal immobilizing dose of a combination of medetomidine hydrochloride (MED) and ketamine hydrochloride (KET) in reindeer (Rangifer tarandus tarandus).
Animals: 12 healthy 6- to 8-month old reindeer.
Procedure: Each reindeer was immobilized once with an initial dose (combination of 0.