Abstract
Kangaroo disease (lumpy jaw disease; LJD) is a disease of the oral cavity in Macropodidae that may be caused by stress-related factors; however, detailed information about its pathogenesis is lacking. Therefore, in this study, we evaluated markers of stress in kangaroos with and without LJD to determine the factors that cause an LJD outbreak. We evaluated the oxidative stress value, antioxidant activity, and plasma cortisol concentration in blood samples. Additionally, we measured the cortisol concentration in saliva samples. The oxidative stress value and serum cortisol concentrations were statistically significantly different between the two groups, but the antioxidant activity and saliva cortisol concentrations did not differ significantly. Relatively large variations were observed for each value within individuals.
Highlights
Kangaroo disease (Lumpy Jaw Disease; LJD) is an oral disease that affects animals of the Macropodidae family
In both wild and captive animals, the disease occurs in areas that are susceptible to contamination by feces and develops when lacerations or abrasions become infected after animals come into contact with feces (Antiabong et al, 2013; Blanden et al, 1987)
A relationship between the onset of the disease and stress has been strongly suggested in captive animals, but many details related to the mechanism of onset remain unclear
Summary
Kangaroo disease (Lumpy Jaw Disease; LJD) is an oral disease that affects animals of the Macropodidae family This disease is known by several other names, including lumpy jaw, actinomycosis, nocardial mycosis, and dermatophilus congolensis (Antiabong et al, 2013; Blanden et al, 1987). LJD occurs in both wild and captive environments, but it is said to be more common among captive animals (Antiabong et al, 2013; Bradley et al, 1980; King and Bradshaw, 2010) In both wild and captive animals, the disease occurs in areas that are susceptible to contamination by feces and develops when lacerations or abrasions become infected after animals come into contact with feces (Antiabong et al, 2013; Blanden et al, 1987). The objective of this study was to examine one possible cause of LJD by comparing the differences in the levels of stress-related markers in healthy and LJD animals raised in zoos
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