| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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|
タイトル |
Effects of Environmental Temperature on Egg Production, Food Intake and Water Consumption in Laying White Leghorns |
|
言語 |
en |
| タイトル |
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|
タイトル |
白レグの産卵,採食,飲水におよぼす環境温度の影響 |
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言語 |
ja |
| 作成者 |
Ito, Toshio
Moriya, Tesshu
Yamamoto, Sadaki
Mimura, Ko
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| アクセス権 |
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アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 主題 |
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主題Scheme |
NDC |
|
主題 |
480 |
| 内容記述 |
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内容記述 |
白レグ産卵鶏15羽(1年鶏10羽,2年鶏5羽)を供試し,産卵鶏の産卵,採食,飲水におよぼす環境温度(25～35℃,2.5℃間隔,各温度感作10～15日)の影響を,環境調節室内で実験し,次の知見を得た. 1) 採食量は温度上昇と共に減少し,25～35℃において,温度1℃あたりの減少率は1.6%であった.飲水量は温度上昇と共に増加し,摂取飼料1gあたりの飯水量も急激に増加し,30℃で25℃の1.5倍,32.5℃で2倍,35℃で3倍に達した. 2) 産卵率は35℃において73%と最低で,一日あたりの卵生産量も最低であったが,飼料消費あたりの産卵効率は61%と最高であった. 3) 破卵,軟卵をのぞいた正常卵の生産効率は,32.5℃において53%と最高で,一方35℃においては42%であった.35℃では,破卵,軟卵の出現率が31%にも達した.32.5℃では25℃を基準にした場合,15%の卵生産効率の増加がみられ,この点について考察した. |
|
言語 |
ja |
| 内容記述 |
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|
内容記述 |
In order to investigate the effects of environmental temperature on egg production, food intake and water consumption in laying White Leghorns, this experiment was performed. Fifteen hens (10 of them were 1 year old hens, 5 were 2 years old hens) were kept in the temperature room from 25 to 35°C changing by 2.5°C at each interval during 10-15 days. The results obtained were as follows; 1) The higher the temperature becomes, the lesser food intake was observed. The decreasing rate was 1.6% per Centigrade rise of environmental temperature from 25°C to 35°C. Water consumption increased with the rise of temperature. Each ratio of water consumed per one g of food intake was about 2 times at 32.5°C, and about 3 times at 35°C as much as that at 25°C. 2) Egg production rate was lowest at 35°C, being 73%. Daily egg production was also lowest at 35°C, but food efficiency for egg production, was highest at 35°C, being 61%. 3) Excluding abnormal eggs, net efficiency for egg production was highest at 32.5°C, being 53%, but being 42% at 35°C. Appearing rate of abnormal eggs was attained to 31% at 35°C. Comparing 25°C with 32.5°C, the latter temperature regime had by 15% higher food converting efficiency. The reason for the highest food converting rate for egg production at 32.5°C was discussed. |
|
言語 |
en |
| 出版者 |
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出版者 |
広島大学水畜産学部 |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| ID登録 |
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|
ID登録 |
10.15027/41148 |
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ID登録タイプ |
JaLC |
| 関連情報 |
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|
識別子タイプ |
NAID |
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関連識別子 |
40018463931 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0440-8756 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN00213563 |
| 開始ページ |
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開始ページ |
151 |
| 書誌情報 |
広島大学水畜産学部紀要
Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University
巻 9,
号 2,
p. 151-160,
発行日 1971-03-20
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| 旧ID |
41148 |
JFacFishAnim_9_151.pdf (985.3 KB)
