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Seasonal Changes of Testis Volume, Scrotal Circumference and Serum Testosterone Concentrations in Male Sika Deer (Cervus nippon)
Nihon Chikusan Gakkaiho
Annual changes in the concentration of serum testosterone (T) in sika deer stags were examined. The relationships between the serum T concentration and the size of testis, and between the serum T concentration and the antler cycle were also evaluated. The serum T concentration increased between July and September, then decreased between October and November. The highest serum T concentration was noted in September or October. During the period from November to the following July, the serum Tdoi:10.2508/chikusan.71.137 fatcat:l4nwjdoumfbf3cigcfhub4zxce