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J Appl Anim Welf Sci. 2019 May 16:1-10. doi: 10.1080/10888705.2019.1614924. [Epub ahead of print]

Infrared Thermography as an Indicator of Heat Loss in Fur-Chewing Chinchillas (Chinchilla Lanigera).

Author information

1
a Department of Swine and Small Animal Breeding , University of Agriculture in Kraków , Kraków , Poland.
2
b Department of Veterinary, Reproduction and Animal Welfare, Faculty of Animal Science , University of Agriculture in Kraków , Kraków , Poland.
3
c State Higher Vocational School in Tarnów , Polytechnic Institute , Tarnów , Poland.

Abstract

Fur-chewing is a common problem in chinchilla (Chinchilla lanigera). It may affect the welfare of animals due to heat loss, thereby possibly impacting food and water intake to maintain body temperature. In this context, infrared thermography seems to be a suitable method of measuring heat emissions from the surface of objects. Sexually mature male domestic chinchillas were divided into two groups: "non-fur chewers", exhibiting normal behaviour (n = 25), and "fur chewers" displaying fur-chewing behaviour (n = 23). Food and water intake (mean ± SD) measured in the control animals amounted to 20.7 ± 4.52 g and 15.9 ± 3.45 mL, while in fur-chewing chinchillas were 25% and 33% higher, respectively. Metabolic energy intake, were calculated 2.2 and 2.8 W for the control and fur-chewing animals, respectively. Heat flux through chewed areas was 6.06 mW cm-2, which is 2.8 times higher than through undamaged chinchilla fur. To sum up, thermal imagingexplicitly shows that fur-chewing causes increased heat loss. Disturbances in the maintenance of thermal homeostasis may be an additional factor that reduces the welfare of these animals.

KEYWORDS:

; fur-chewing; heat transfer; thermography; welfare

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