Over-Winter Weight Dynamics in Supplementally Fed Free-Ranging Sika Deer (Cervus nippon)

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概要

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• Continuous body weight dynamics in supplementally fed free-ranging sika deer (Cervus nippon) during the three consecutive over-winters (from January to April), 1992-1994 were surveyed. Almost all individuals lost weight continuously throughout each winter (adult deer 5-13%; young deer 3-19%) and several deer lost weight even in April. Weight gain after loss began in the mid-April when ambient temperature increased and when plant growth began. Weight dynamics varied according to sex, age and reproductive status. Adult deer showed significant large weight loss than the young. Young deer lost weight (calves 18 ± 11 g/day, yearling and two-year-olds 27 ± 29 g/day) more slowly than the adults (65 ± 23 g/day). Following this study of over-winter body weight dynamics, it seems that early springs are the most critical periods for the survival of free-ranging sika deer because of their poor nutritional condition.

• 日本森林学会の論文
• 1996-08-16

著者

• Hayama Shin-ichi

  Division Of Wild Animal Medicine Nippon Veterinary And Animal Science University

• Yamane Masanobu

  Research Division of Kanagawa Natural Environment Conservation Center

• Furubayashi Kengo

  Department of Ecoregion Science, Faculty of Agriculture, Tokyo University of Agriculture and Technol

• Yamane Masanobu

  Division of Research, Kanagawa Prefecture Forestry Research Institute

• Furubayashi Kengo

  Department Of Ecoregion Science Faculty Of Agriculture Tokyo University Of Agriculture And Technolog

関連論文

• Nutritional evaluation of forage for sika deer in the eastern part of the Tanzawa Mountains, Japan : a preliminary study using the rumen fluid of sheep
• Over-Winter Weight Dynamics in Supplementally Fed Free-Ranging Sika Deer (Cervus nippon)
• Benefits of mass reduction for commuting fight with heavy food load in Leach's storm-petrel, Oceanodroma leucorboa
• A Body Condition Index Based on Body Mass and External Measurements of Live Leach's Storm-petrels
• Demographic genetics of Siebold's beech (Fagaceae, Fagus crenata Blume) populations in the Tanzawa Mountains, central Honshu, Japan. II. Spatial differentiation and estimation of immigration rates using a stepping-stone structure

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