著者

佐藤 喜和 中下 留美子

出版者

酪農学園大学

雑誌

挑戦的萌芽研究

巻号頁・発行日

2014-04-01

---

国後島・択捉島には世界で唯一上半身が白いヒグマが生息している。この毛色パタンにはサケ類を捕獲する際に発見されにくいという適応的な意義があるとの仮説を立て,これを明らかにする足がかりを得ることを目的に研究を行った。国後島・択捉島のヒグマは個体差なく草本類とサケマス類,果実類を中心とした資源利用をしていた。着衣色を変えカラフトマスの反応を見る実験から,黒には敏感に反応し接近しなかったが,白には接近しやすかったことから,上半身が白いヒグマには適応的意義があることが示唆された。

著者

吉田 磨 藤原 沙弥香 牛山 克己 今井 翔 窪田 千穂

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.34, no.2, pp.211-221, 2010-04

著者

鈴木 あいり

出版者

酪農学園大学

巻号頁・発行日

pp.1-34, 2018

---

Endangered costal plants and insects inhabits in Lower Ishikari River, Hokkaido. However, non-native frog, Japanese toad (Bufo japonicus formosus) was introduced into Asahikawa city in 1980, and it was spread the distribution along Ishikari River Basin recently. The toad was firstly found at lower Ishikari River Estuary in 2005, and the established population was confirmed in 2011. Because this invasive toad preys on the above-ground insects in other areas of Hokkaido, it is believed that costal ecosystem of Ishikari Estuary is facing a serious ecological threaty. This study aims to assess the predation impacts of Bufo japonicus formosus by examining their diet composition. And the breeding season Bufo japonicus formosus capture method use large pitfalls and drift fence. Prey species obtained from stomach contents of Bufo japonicus formosus was classified into 16 families of 13 orders among 5 classes. We observed 291 prey species. Grasshoppers weevil families were the highest stomach content and ants and bees also were composed of stomach content at significant level.11 species of ants od which included seed disposal of costal flowers such as Viola grayi and Formica yessensis, were preyed by the toad. This result might show predation influence and impacts of long-term costal landscape and biodiversity. This study also harvested 1,067 Bufo japonicus formosus from April 16 of 2017 to May 22 with drift-fenced pitfall traps. And there were more harvesting at 2018 (from April 19 of 2018 to May 22) with 2,271 toads 1,445 toads were mark-recaptured; however, onlys 422 (29.2%) were recaptured. . . This 2 years research harvested total of 3,338 Bufo japonicus formosus, and more than 90 % were captured in the short period of time (May 1 May 5). Because this short peak, a breeding season of Bufo japonicus formosus at lower Ishikari River might be shorter than other areas. It's important to conduct continual disinfestation activity using a drift fence and pitfall trap and monitoring investigation in the Ishikari River estuary area where indirect effects on the coastal ecosystem are suggested, from now on and link it to the distribution spread, the number of individuals reduction and explosive increased prevention.

著者

石井 智美 森 ゆうこ 萩原 克郎

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編

巻号頁・発行日

vol.41, no.1, pp.77-83, 2016-10

著者

石井 智美 玉城 美香 柴田 千晶 岩野 英知

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.32, no.2, pp.139-144, 2008-04

著者

本間 裕介

出版者

酪農学園大学

巻号頁・発行日

pp.1-47, 2017

---

[Objective] Since 2011, large-scale disasters beyond assumptions of governments have occurred frequently throughout Japan, and hazard maps are in the process of change with law amendment etc. Evacuation regime is being improved on the premise of evacuation in a wider area, and the hazard maps are being renewed to assume the maximum class natural disaster. On the other hand, safe areas on the hazard maps will be decreased, consequently residents will need to determine safe places at emergency in their own judgment and evacuate. In this study, conducted the current situation survey of creation and disclosure of flood hazard maps and whether the contents are compatible with wide area evacuation, then extracted issues and proposed to solve using GIS. [Method] First of all researched the current situation of the flood hazard map. The survey target was all municipalities in Hokkaido, and we researched the creation situation, the disclosure situation, and the contents of the flood hazard maps. Also conducted a hearing survey on the current situation and issues of the hazard maps to the Hokkaido Government Office. Based on the results of the current situation survey, extracted "issues related to maintenance" such as creating and disclosing hazard maps, and "design issues" such as contents and displays described on the hazard maps. The design issues were discussed mainly based on easiness of comparison of maps for wide-area evacuation, namely, unity. Furthermore, we evaluated the current situation of the flood hazard maps of all the municipalities in Hokkaido against the extracted 'design issues.' Finally, we proposed a flood hard map that solved the issues using GIS, and summarized the creation workflow. [Result] Based on the results of the current situation survey, it was found that the actual number of municipalities creating and publishing flood hazard maps exceeded the number of grasped by the Hokkaido Government Office and the Ministry of Land, Infrastructure and Transport. Meanwhile, revealed that there are municipalities that have not created even though flood hazard maps are necessary. In addition there were some municipalities that have issues concerning disclosure situation. Also, it turned out that the design of flood hazard maps have wide variation. When evaluated the current situation on three factors, "cardinal direction", "scale of background map", and "color coding of supposed flooding depth", the dispersion of cardinal direction was particularly large. On the other hand, related to color coding of supposed flooding depth, there were also places where the risk of misreading was predicted. Furthermore, indications such as evacuation places and supposed inundation areas had been divided in administrative districts. Created a sample map around the Oasa area in Ebetsu city as an example aimed to solve these problems. This sample map was created using free GIS software, and geoprocessing data released by the government. Then organized and wrote down the work flow as a manual. With this, strived for promote the creation of flood hazard map by municipalities and others. In addition, Added location information to this map file. Thereby made it possible to check the current position when referring the map on the mobile terminal. [Discussion] Can't assert that the proposed sample map to solve the problems is a perfect form of a flood hazard map, however if the way to create hazard map at low cost that isn't limited by administrative districts will spreads, It is considered to leading to mediate between of hazard maps of municipalities. Still, although the solution proposed in this study showed part of the solution concerning the creation and disclosure of a hazard map, it has not yet solved the issue related to public dissemination of the hazard maps that were released. It is considered as a future task to encourage residents' crisis consciousness not only to prepare hazard maps.

著者

Murase Mayumi Tajima Yuko Okamoto Minoru Matsuishi Takashi Yamada Tadasu K. Asakawa M

出版者

酪農学園大学

雑誌

Research of One Health (ROH)

巻号頁・発行日

vol.2014, pp.13-17, 2014-03

---

Postmortem examination was performed on a female western gray whale (Eschrichtius robustus) stranded at Tomakomai-shi, Hokkaido, Japan in August, 2007, and amphipod whale lice (Cyamus scammoni) and cirripedian epizoites (Cryptolepas rachianecti) were obtained. The histopathological investigation of the epizoites was given. 2007年8月、北海道苫小牧市の海岸でストランド(座礁)したコククジラ(Eschrichtius robustus) 雌1個体の外部寄生虫クジラジラミ類(Cyamus scammoni)と着生生物フジツボ類(Cryptolepas rachianecti)について、日本では千葉に続き二例目の記録をした。また、C. rachianectiの着生部位における組織病理学的検索も実施した。

著者

金子 正美 小菅 千絵 中谷 暢丈 吉田 剛司 蒔田 浩平 赤松 里香 伊藤 美和子 峯藤 裕司 Rosli JUKRANA

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.38, no.1, pp.37-45, 2013-10-20

著者

村井 隆晃 吉田 剛司

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.37, no.2, pp.161-166, 2013-04

著者

髙橋 俊彦 夏井 美聡 岸田 美月 北野 菜奈 井上 誠司 菊 佳男

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:21870500)

巻号頁・発行日

vol.47, no.1, pp.1-6, 2022-10

---

During the suckling period, calves are prone to physiological anemia. Anemic calves often develop respiratory and digestive problems that lead to poor growth. As a precursor of hemoglobin, aminolevulinic acid has an oxygencarrying function in red blood cells in the body, and is expected to prevent anemia. In this study, we examined the effects of feeding aminolevulinic acid to calves on their growth and analyzed whether it had anemia-preventing effects. Our subject calves were six suckling calves, three of which were orally administered an aminolevulinic acid preparation (5 g/day for 60 days; test group), and three of which received no aminolevulinic acid (controls). At 0, 1, and 3 months of age, body weight, height, daily gain, and blood parameters (red blood cell count, hemoglobin, iron, hematocrit, white blood cell count, total protein, and total cholesterol) were measured, and the number of respiratory and digestive diseases and number of days of treatment were investigated. In the test group, body height was significantly higher at 1 month of age, and daily body mass also tended to be higher at 1-3 months of age. In blood tests, the red blood cell count and hemoglobin were below standard values at birth and at 2 months of age in both the test and control groups. Iron and total cholesterol tended to be higher in the test group at 1 and 3 months of age, while white blood cell count and total protein tended to be higher in the control group. In terms of disease status, the number of days of treatment was small in the test group, and no calves were diagnosed with anemia. These results suggest that aminolevulinic acid may improve the nutritional status of calves and be effective in promoting growth and preventing anemia.

著者

梅田 実里 立木 靖之

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:21870500)

巻号頁・発行日

vol.46, no.2, pp.73-79, 2022-03

---

In the Kiritappu wetlands of Hmanaka Town, sika deer (Cervus nippon yesoensis) have been observed in kelp drying grounds and caused damage due to dung deposition. Therefore, countermeasures are required, but they cannot be implemented due to a lack of basic information on this species. In this study, we instigated camera traps, spotlight counts, and fixed-point and direct observations to clarify deer behaviors in urban areas or kelp drying grounds. Many deer were observed in urban areas between November and December, and between sunset and sunrise in kelp drying grounds. Similarly, deer numbers were lager in areas where electric fences were absent. Their behaviors in urban areas mainly involved “walking” in kelp drying grounds. Whereas the result “feeding” in the unimproved land. It was hypothesized that deer appearance increased in urban areas during the breeding and winter seasons. Also, deer were commonly seen from around sunset to sunrise, walking or feeding in urban areas. Electric fences are often effective measures against deer entry, but cannot completely block or prevent deer access as roads border these fences. In future research, it is important to investigate sika deer intrusion routes and patterns in areas where electric fences are breached.

著者

吉川 和幸

出版者

酪農学園大学

巻号頁・発行日

pp.1-94, 2021-03-31

著者

阿久津 敦子

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.31, no.2, pp.223-230, 2007-04

著者

森 夏節

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 人文・社会科学編 (ISSN:03880028)

巻号頁・発行日

vol.32, no.1, pp.23-30, 2007-10

著者

馬場 賢治 金子 命 稲場 愛実

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:21870500)

巻号頁・発行日

vol.46, no.1, pp.79-85, 2021-11

著者

森田 茂

出版者

酪農学園大学

雑誌

奨励研究(A)

巻号頁・発行日

1996

---

(目的)睡眠は、家畜の疲労回復およびエネルギー蓄積に必要なものであるとされている。したがって、1日の睡眠時間の長さや睡眠の質(N-REM睡眠、REM睡眠)を検討することは飼養管理技術の改善につながる。(方法)脳波の導出で鼻梁に基準電極、頭部に探査電極を装着する単極導出法を用いた。24時間の脳波測定のために無束縛携帯型生体アンプとコンパクトカセットデータレコーダを専用のベルトで牛体に固定した。さらに、脳波測定と同時に暗視カメラによる行動観察を行い、休息行動(横臥時間)の成長に伴う変化を脳波測定による睡眠計測から検討した。(結果)幼齢子牛での24時間連続の睡眠脳波測定では、脳波測定用の電極を前頭部中央3箇所とし、記録紙送り速度を秒速1mm、電池交換時刻を飼料給与直後および23時の1日3回交換することが適切であると結論した。1日当りの睡眠時間(=N-REM+REM)は1週齢で493分、7週齢で267分と発育に伴い減少した。N-REM睡眠およびREM睡眠についても同様の結果となった。睡眠時間の日内パターンは週齢に伴う変化は認められなかった。1日当りの横臥時間は1週齢で1120分、15週齢で594分となった。また、1日当りの睡眠時間は1週齢で505分、15週齢で146分となった。N-REM睡眠は睡眠時間と同様の結果となったが、REM睡眠については一定の傾向が見られなかった。1日当り反芻時間は、給与飼料の種類によらず1週齢時ではほとんど認められず、7週齢時では6〜8時間の範囲まで延長した。1日当りの横臥時間は給与飼料の種類によらず1週齢で約18時間から、7週齢での約14時間へ短縮した。さらに、睡眠時間は1週齢での9時間程度から7週齢での4時間程度まで短縮した。成長に伴うN-REM睡眠の変化は、睡眠と同様の傾向であった。一方、REM睡眠には週齢に伴う一定の傾向が見られなかった。このことから、幼齢子牛における週齢に伴う睡眠時間の減少には反芻時間の延焼が大きく関わるものと考えた。

著者

浅川 満彦

出版者

酪農学園大学

巻号頁・発行日

vol.31, no.2, pp.185-188, 2007 (Released:2011-01-19)

---

日本分類連合生物種調査計画でリストアップしたカエル類寄生性線虫類について、想定されうる保全医学的な問題点について指摘した。

著者

池田 透 遠藤 将史 村野 紀雄

出版者

酪農学園大学

雑誌

酪農学園大学紀要 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.25, no.2, pp.311-319, 2001-02

被引用文献数

2

著者

筒井 静子

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.32, no.2, pp.179-182, 2008-04

著者

石井 智美

出版者

酪農学園大学

雑誌

酪農学園大学紀要. 自然科学編 (ISSN:0388001X)

巻号頁・発行日

vol.35, no.2, pp.17-31, 2011-04