@article{oai:ir.kagoshima-u.ac.jp:00002147, author = {髙山, 耕二 and TAKAYAMA, Koji and 根元, 紘史 and NEMOTO, Hiroshi and 溝口, 由子 and MIZOGUCHI, Yuko and 城戸, 麻里 and KIDO, Mari and 冨永, 輝 and TOMINAGA, Akira and 田浦, 一成 and TAURA, Issei and 野村, 哲也 and NOMURA, Tetsuya and 中西, 良孝 and NAKANISHI, Yoshitaka}, journal = {鹿児島大学農学部農場研究報告, Bulletin of the Experimental Farm Faculty of Agriculture,Kagoshima University}, month = {Mar}, note = {To obtain fundamental information on the effective use of geese for sustainable vegetation management on agricultural lands, an experiment comparing the egg productivity between Anser anser domesticus (♀5, ♂2: WT) and A. cygnoides domesticus (♀5, ♂2: CN) from January to June in 2009 was conducted. The two kinds of geese were free-ranged separately in each outdoor corral (1 a), and they were provided with formula feed (CP:16.0%, ME:2,850 kcal/kg) ad libitum. Egg production rate, egg quality, hatchability and rate of raising were compared between WT and CN geese. The egg production rate (hen day's average) of CN geese during the experimental period was 30.1 %, which was significantly higher than that (23.3%) of WT geese (P<0.01). The average egg weight of WT geese was larger than that of CN geese (P<0.01). As for egg quality, percentages of the yolk, albumen and shell weight to total egg weight, color fan scores of egg yolks, shell thickness and eggshell strength were not significantly different between WT and CN geese. The CN geese had a tendency of higher fertility of eggs comparing WT geese (89.5 vs. 78.0%) (P<0.10), however there was no significance in the hatchability of fertilized eggs between WT (65.9%) and CN (72.0%) geese. Although no significant differences were found in the rate of raising between WT and CN geese, feather-peckingw as frequently observed in both geese. These results indicated that CN geese had higher gosling productivity compared with WT geese.}, pages = {9--12}, title = {屋外放飼したセイヨウガチョウならびにシナガチョウの産卵能力の比較}, volume = {33}, year = {2011}, yomi = {タカヤマ, コウジ and ネモト, ヒロシ and ミゾグチ, ユウコ and キド, マリ and トミナガ, アキラ and タウラ, イッセイ and ノムラ, テツヤ and ナカニシ, ヨシタカ} }