Journal of Reproduction and Development 53(6) 1283-1289 Dec 2007
The progesterone (P4) profiles and macroscopic vulvar changes of female Malayan tapirs were investigated in order to understand their fundamental reproductive physiology and to search for visual indicators of estrus. Blood was collected once or tw...
Journal of Veterinary Medical Science 68(10) 1093-1095 Oct 2006
The serum and fecal testosterone (T) concentrations and testicular sizes of two male bharals (Pseudois nayaur) were determined for approximately one year. The profiles of the fecal T concentrations showed a similar tendency as the profiles of seru...
Journal of Veterinary Medical Science 68(8) 847-851
The purpose of present study was to determine annual changes in serum progesterone (P4) concentrations and to clarify basic reproductive characteristics, such as breeding season, estrous cycle, and puberty in female bharals (Pseudois nayaur). Bloo...
The eggshells of 56 chelonians were examined by electron microscopy and X-ray diffractometry. They were classified into six types in terms of the matrix structure of their calcareous layer; type I was composed of a thin calcareous layer with miner...
The structure and mineral composition of eggshell cuticles were studied in 5 species of birds. The approximate thickness of the cuticle layer at the top of shell columns was about 1 μm in the Red Junglefowl (Gallus gallus), about 130 μm in the Whi...
Satoshi Kusuda, Koki Morikaku, Ken Ichi Kawada, Kenji Ishiwada, Kenji Ishiwada, Osamu Doi
Journal of Reproduction and Development 53(1) 143-150
The aim of the present study was to establish a simple method to monitor ovarian activity and non-invasively diagnose pregnancy in okapi (Okapia johnstoni). The feces of a female okapi were collected daily or every 3 days for 28 months. Steroids i...
Journal of Reproduction and Development 57(2) 262-266 Apr 2011
The purposes of the present study were to establish a noninvasive monitoring assay of fecal progestagen measurement to detect pregnancy and to identify the components of fecal progestagens in early, middle and late pregnancy in cheetahs. Feces wer...
Reproductive physiology and analysis method for reproductive status survey were studied for the conservation of endangered carnivores such as bear and felid species. As a resultnon-invasiveendocrine monitoring method using feces were established f...
Development of non-invasive endocrine monitoring techniques for endangered mammals
