Activity and heart rate in semi-domesticated reindeer during adaptation to emergency feeding

Physiology & Behavior
A NilssonK Olsson

Abstract

Although reindeer are well adapted to limited food resources during winter, semi-domesticated reindeer are regularly fed when snow conditions are bad in order to prevent starvation. Feeding sometimes results in health problems and loss of animals. This study was made to assess if activity pattern in reindeer could be used as a tool for the reindeer herder in early detection of animals that are not adapting to feeding. The frequency of 10 behavioural categories was recorded in five groups of penned, eight-month-old, female semi-domesticated reindeer. Three reindeer per group were fitted with heart rate monitors. Lying was the most frequent behaviour, whilst there were few cases of agonistic behaviour. Heart rate varied during the day, with peaks during feeding and low heart rates in the early morning. Restricted feed intake resulted in more locomotion and seeking but less ruminating compared to feeding ad libitum. This was followed by a generally lower heart rate in reindeer in the restricted groups compared to controls. Subsequent feeding with different combinations of lichens, silage and pellets ad libitum resulted initially in significantly more of the animals lying curled up, compared to controls, combined with increased hea...Continue Reading

References

Dec 1, 1988·American Journal of Obstetrics and Gynecology·J F ClappJ Hiser
Jan 1, 1974·Behaviour·J Altmann

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Citations

Feb 25, 2011·The Journal of Experimental Biology·Christopher TurbillWalter Arnold

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