Differences of Hormone Concentrations and Dynamics between Rectal and Cecal Feces of Captive Svalbard Rock Ptarmigan (<i>Lagopus</i> <i>muta hyperboreus</i>)

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  • YAMAMOTO Saori
    The United Graduate School of Agricultural Science, Gifu University
  • KUSUDA Satoshi
    The United Graduate School of Agricultural Science, Gifu University Faculty of Applied Biological Sciences, Gifu University
  • TAKAHASHI Yukihiro
    Ueno Zoological Gardens, Tokyo Zoological Park Society
  • HORI Hidemasa
    Ueno Zoological Gardens, Tokyo Zoological Park Society
  • HORIGUCHI Masaharu
    Toyama Municipal Family Park Zoo
  • ISHIHARA Yuji
    Toyama Municipal Family Park Zoo
  • DOI Osamu
    The United Graduate School of Agricultural Science, Gifu University Faculty of Applied Biological Sciences, Gifu University

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Other Title
  • スバールバルライチョウの排泄糞中の性ステロイドホルモン値とその動態における腸糞中と盲腸糞中の比較

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Abstract

The concentration and dynamics of estradiol-17β (E 2), progesterone (P4) and testosterone (T) in rectal and cecal feces were evaluated in captive Svalbard rock ptarmigans (Lagopus muta hyperboreus). The dynamics of E2, P4 and T were parallel between in rectal and cecal feces, and there were positive correlation described by correlation coefficient r＝ 0.63, 0.24 and 0.61, respectively. The E2, P4 and T in cecal feces showed average of 5.36, 4.54 and 10.80 time higher concentrations than that in rectal feces. These results suggest that fecal type for monitoring of endocrinological profile in this species has to be decided between the rectal and cecal feces.

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