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＜departmental bulletin paper＞
Use of Complex Number in the Analysis of Increase in Dry Matter Indigestibility with Growth of Forages

Creator
Author PID
K001569
Creator Name
Shimojo, Masataka
下條, 雅敬
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Creator Name
Bungo, Takashi
豊後, 貴嗣
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Creator Name
Imura, Yoshimi
伊村, 嘉美
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Creator Name
Tobisa, Manabu
飛佐, 学
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Creator Name
Koga, Naoki
古賀, 直樹
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Creator Name
Tao, Shao
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
Creator Name
Yunus, Muhammad
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
Author PID
K001674
Creator Name
Nakano, Yutaka
中野, 豊
Affiliation
Affiliation Name
Kyushu University Farm
九州大学農学部附属農場
Author PID
L000534
Creator Name
Goto, Ichiro
五斗, 一郎
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Author PID
K000452
Creator Name
Furuse, Mitsuhiro
古瀬, 充宏
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Author PID
K001529
Creator Name
Masuda, Yasuhisa
増田, 泰久
Affiliation
Affiliation Name
Laboratory of Animal Feed Science, Faculty of Agriculture, Kyushu University
九州大学農学部生物資源環境学科動物生産科学飼料学講座
Language
English
Publisher
Kyushu University
九州大学農学部
Date
1998-11
Source Title
Journal of the Faculty of Agriculture, Kyushu University
Vol
43
Issue
1/2
First Page
137
Last Page
142
Publication Type
Version of Record
Access Rights
open access
Crossref DOI
https://doi.org/10.5109/24260
Related DOI
九州大学農学部紀要 || 43(1/2) || p137-142
Journal of the Faculty of Agriculture, Kyushu University || 43(1/2) || p137-142
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大学農学部紀要 || 43(1/2) || p137-142
Journal of the Faculty of Agriculture, Kyushu University || 43(1/2) || p137-142
http://www.agr.kyushu-u.ac.jp/
Relation
九州大学農学部紀要 || 43(1/2) || p137-142
Journal of the Faculty of Agriculture, Kyushu University || 43(1/2) || p137-142
http://www.agr.kyushu-u.ac.jp/

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Details

PISSN
0023-6152
NCID
AA00697606
Record ID
24260
Peer-Reviewed
Unrefereed
Subject Terms
Dry matter indigestibility (DMI)
Growth of forages
Subtraction theorem of tangent
ISSN
0023-6152
NCID
AA00697606
Notes
This study was conducted to give a trigonometric representation, using complex numbers and plane, of the increase in dry matter indigestibility [IDMI] with growth of forages. The following results were obtained. Divisional calculations between two coordinates of dry matter indigestibility [DMI] expressed using complex numbers were related to the subtraction theorem or tangent. This relation might give some information on DMI changes, namely IDMI, the geometric mean of DMI [GMDMI] and relative IDMI (=IDMI/GMDMl). Changes in dry weight and indigestible dry weight with forage growth were visualized by the geometric representation. Therefore, there were four information on IDMI given by the trigonometric representation of DMI on the complex plane. It was suggested that the complex representation of DMI of forages derived, from the subtraction theorem of tangent, some information on IDMI with forage growth.
Created Date 2012.08.02
Modified Date 2022.11.11

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