Physiological Stress Response Based on Salivary α-Amylase Activity and Secretory Immunoglobulin A Levels in Female Care Workers and General Workers

Kawano, Yukiko; Demura, Shinichi; Tanaka, Yoshiharu; Matsuura, Yoshiharu

doi:10.33425/2639-9474.1105

Cited by 1 publication

(1 citation statement)

References 22 publications

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“…However, again, differences in lag times could be reflecting acute versus chronic measures of immune function and therefore welfare. In humans, Kawano et al [ 64 ] did not find differences in salivary IgA between workers who participated in highly stressful compared to less stressful jobs, perhaps because the former had learned to adjust and cope. Birkett et al [ 65 ] showed that concentrations of salivary IgA in humans returned to baseline within 20 min of stress exposure.…”

Section: Discussionmentioning

confidence: 99%

Effect of Tourist Activities on Fecal and Salivary Glucocorticoids and Immunoglobulin A in Female Captive Asian Elephants in Thailand

Kosaruk

Brown

Plangsangmas

et al. 2020

Animals

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Asian elephants have been an important part of wildlife ecotourism in Thailand for over two decades. Elephants in tourist camps are exposed to a variety of management styles and daily activities that can potentially affect health and welfare. This study investigated relationships between a novel welfare biomarker, immunoglobulin A (IgA), and daily camp activities, and compared results to glucocorticoid (GC) measures. Often no-riding camps are portrayed as providing better welfare than camps that offer riding. Therefore, we predicted that elephants at no-riding camps would have lower GC and higher IgA concentrations, and a low GC/IgA ratio. Forty-four female elephants from six elephant camps were divided into three groups based on riding activities: saddle-riding, bareback-riding, and no-riding. Fecal and salivary samples were collected monthly for 1 year along with evaluations of body condition, foot health, and wounding. Camp environment and management varied among camps, although the major difference was in riding activities. Concentrations of GCs and IgA varied among the working groups, but not always consistently between sample matrices. Overall fecal glucocorticoid metabolite concentrations were lowest in the saddle-riding group. Only in one bareback-riding camp did the elephants exhibit a potentially positive welfare response with a low GC/IgA ratio over time. Other results varied between the two biomarkers, with considerable variability across camps, suggesting there is more to good welfare than whether elephants participate in riding or not. Several other human-induced stressors, like chaining, ankus use, and limited social opportunities are likely to be impacting well-being and should be considered to ensure management practices meet physical and psychological welfare needs.

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Section: Discussionmentioning

confidence: 99%