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Date: 05/11/25
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Our Goals

  1. Acquire and make easily accessible to zoo and aquarium professionals the current body of knowledge on animal welfare and ethics.
  2. Conduct and facilitate welfare assessments and applied welfare research on captive exotic animals.
  3. Convene important discussions and presentations on captive exotic animal welfare and ethics.
  4. Train professionals on captive exotic animal welfare best practices and policies.
  5. Recognize advances in improving captive exotic animal welfare and ethics through awards.
URL: https://detroitzoo.org/resources/?fwp_search=anestrus

Effects of physiological changes and social life events on adrenal glucocorticoid activity in female zoo-housed Asian elephants (Elephas maximus)

Authors: Sharon S Glaeser, Katie L Edwards, Nadja Wielebnowski, Janine L Brown

Publication/Journal: PloS one

Keywords: animal sociality, cortisol, elephants, estrous cycle, euthanasia, phase determination, pregnancy, urine

2020

Vaginal cytology and vulvar swelling as indicators of impending estrus and ovulation in the giant panda (Ailuropoda melanoleuca)

Authors: Barbara S. Durrant, Mary Ann Olson, Dianne Amodeo, Autumn Anderson, Kara D. Russ, Rogelio Campos-Morales, Fernando Gual-Sill, Juan Ramos Garza

Publication/Journal: Zoo Biology

Keywords: estrous cycle, papanicolaou, superficial cells, vaginal smears

2003

Reproductive endocrine responses to photoperiod and exogenous gonadotropins in the pallas’ cat (Otocolobus manul)

Authors: Janine L. Brown, Laura H. Graham, Julie M. Wu, Darin Collins, William F. Swanson

Publication/Journal: Zoo Biology

Keywords: androgens, artificial insemination, estrogens, estrous cycle, fecal steroids, hormones, pregnancy, progestogens, seasonality, testis

2002

Reproductive parameters of mandrills at the Tulsa Zoo

Authors: Tammie Bettinger, Janette Wallis, Amy Morris

Publication/Journal: Zoo Biology

Keywords: baboon, genital swelling, gestation, interbirth interval, mandrill

1995

Analysis of urinary immunoreactive steroid metabolites and gonadotropins for characterization of the estrous cycle, breeding period, and seasonal estrous activity of captive killer whales (Orcinus orca)

Authors: T. R. Robeck, A. L. Schneyer, J. F. McBain, L. M. Dalton, M. T. Walsh, N. M. Czekala, D. C. Kraemer

Publication/Journal: Zoo Biology

Keywords: delphinidae, follicle-stimulating hormone, luteinizing-hormone, reproductive endocrinology

1993

Yearling bulls shorten the duration of postpartum anestrus in beef cows to the same extent as do mature bulls

Authors: AS Cupp, MS Roberson, TT Stumpf, MW Wolfe, LA Werth, N Kojima, RJ Kittok, JE Kinder

Publication/Journal: Journal of Animal Science

Keywords: anestrus, bull exposure, postpartum interval

1993

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The Detroit Zoological Society – a renowned leader in
humane education, wildlife conservation, animal welfare
and sustainability – operates the Detroit Zoo and Belle Isle Nature Center.

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