Two Different-Type Equations Analyzing Decrease in Dry Matter Digestibility with Growth of Forages

Masataka Shimojo; Takashi Bungo; Yoshimi Imura; Manabu Tobisa; Naoki Koga; Shao Tao; Muhammad Yunus; Zhao Yin; Yutaka Nakano; Ichiro Goto; Yasuhisa Masuda

Two Different-Type Equations Analyzing Decrease in Dry Matter Digestibility with Growth of Forages

Masataka Shimojo, Takashi Bungo, Yoshimi Imura, Manabu Tobisa, Naoki Koga, Shao Tao, Muhammad Yunus, Zhao Yin, Yutaka Nakano, Ichiro Goto, Yasuhisa Masuda

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

This study was conducted to present a new equation for analyzing the decrease in dry matter digestibility [DDMD] with growth of forage, and to relate it and the previous equation analyzing DDMD (Shimojo et al., 1998b). The following equation showed the relationship between two equations, namely, the new equation on the left-hand side and the changed form of the previous equation on the right-hand side. D₁/W₁ · [1 - exp {(RGR_d - RGR_w) · (t₂ - t₁)}] = (1 - W₁/W₂) · (D₁/W₁ - RGR_d/RGR_w · D/W), (A) where W = dry weight of forage (W₁ ≠ W₂), D = dry weight of digestible materials (D₁ ≠ D₂), RGR_w = mean relative growth rate of forage, RGR_d = mean relative growth rate of D, (1 - W₁/W₂) = forage growth index [FG index], {D₁/W₁ - (RGR_d/RGR_w) · (D/W)} = a changed form of DDMPD index (DDMPD index: index for the decrease in dry matter partition into D). The following results were obtained: Equation (A) showed that DDMD was expressed using RGR_d and RGR_w as main factors in either of two different-type equations. It was suggested that there was a new equation analyzing DDMD, and using the new and previous equations some information was obtained for the change in dry matter digestibility with growth of forages.

Original language	English
Pages (from-to)	373-376
Number of pages	4
Journal	Journal of the Faculty of Agriculture, Kyushu University
Volume	42
Issue number	3-4
Publication status	Published - Mar 1 1998

All Science Journal Classification (ASJC) codes

Biotechnology
Agronomy and Crop Science

Cite this

@article{f331ef4d54884c20977220b14e32b083,

title = "Two Different-Type Equations Analyzing Decrease in Dry Matter Digestibility with Growth of Forages",

abstract = "This study was conducted to present a new equation for analyzing the decrease in dry matter digestibility [DDMD] with growth of forage, and to relate it and the previous equation analyzing DDMD (Shimojo et al., 1998b). The following equation showed the relationship between two equations, namely, the new equation on the left-hand side and the changed form of the previous equation on the right-hand side. D1/W1 · [1 - exp {(RGRd - RGRw) · (t2 - t1)}] = (1 - W1/W2) · (D1/W1 - RGRd/RGRw · D/W), (A) where W = dry weight of forage (W1 ≠ W2), D = dry weight of digestible materials (D1 ≠ D2), RGRw = mean relative growth rate of forage, RGRd = mean relative growth rate of D, (1 - W1/W2) = forage growth index [FG index], {D1/W1 - (RGRd/RGRw) · (D/W)} = a changed form of DDMPD index (DDMPD index: index for the decrease in dry matter partition into D). The following results were obtained: Equation (A) showed that DDMD was expressed using RGRd and RGRw as main factors in either of two different-type equations. It was suggested that there was a new equation analyzing DDMD, and using the new and previous equations some information was obtained for the change in dry matter digestibility with growth of forages.",

author = "Masataka Shimojo and Takashi Bungo and Yoshimi Imura and Manabu Tobisa and Naoki Koga and Shao Tao and Muhammad Yunus and Zhao Yin and Yutaka Nakano and Ichiro Goto and Yasuhisa Masuda",

year = "1998",

month = mar,

day = "1",

language = "English",

volume = "42",

pages = "373--376",

journal = "Journal of the Faculty of Agriculture, Kyushu University",

issn = "0023-6152",

publisher = "Faculty of Agriculture, Kyushu University",

number = "3-4",

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TY - JOUR

T1 - Two Different-Type Equations Analyzing Decrease in Dry Matter Digestibility with Growth of Forages

AU - Shimojo, Masataka

AU - Bungo, Takashi

AU - Imura, Yoshimi

AU - Tobisa, Manabu

AU - Koga, Naoki

AU - Tao, Shao

AU - Yunus, Muhammad

AU - Yin, Zhao

AU - Nakano, Yutaka

AU - Goto, Ichiro

AU - Masuda, Yasuhisa

PY - 1998/3/1

Y1 - 1998/3/1

N2 - This study was conducted to present a new equation for analyzing the decrease in dry matter digestibility [DDMD] with growth of forage, and to relate it and the previous equation analyzing DDMD (Shimojo et al., 1998b). The following equation showed the relationship between two equations, namely, the new equation on the left-hand side and the changed form of the previous equation on the right-hand side. D1/W1 · [1 - exp {(RGRd - RGRw) · (t2 - t1)}] = (1 - W1/W2) · (D1/W1 - RGRd/RGRw · D/W), (A) where W = dry weight of forage (W1 ≠ W2), D = dry weight of digestible materials (D1 ≠ D2), RGRw = mean relative growth rate of forage, RGRd = mean relative growth rate of D, (1 - W1/W2) = forage growth index [FG index], {D1/W1 - (RGRd/RGRw) · (D/W)} = a changed form of DDMPD index (DDMPD index: index for the decrease in dry matter partition into D). The following results were obtained: Equation (A) showed that DDMD was expressed using RGRd and RGRw as main factors in either of two different-type equations. It was suggested that there was a new equation analyzing DDMD, and using the new and previous equations some information was obtained for the change in dry matter digestibility with growth of forages.

AB - This study was conducted to present a new equation for analyzing the decrease in dry matter digestibility [DDMD] with growth of forage, and to relate it and the previous equation analyzing DDMD (Shimojo et al., 1998b). The following equation showed the relationship between two equations, namely, the new equation on the left-hand side and the changed form of the previous equation on the right-hand side. D1/W1 · [1 - exp {(RGRd - RGRw) · (t2 - t1)}] = (1 - W1/W2) · (D1/W1 - RGRd/RGRw · D/W), (A) where W = dry weight of forage (W1 ≠ W2), D = dry weight of digestible materials (D1 ≠ D2), RGRw = mean relative growth rate of forage, RGRd = mean relative growth rate of D, (1 - W1/W2) = forage growth index [FG index], {D1/W1 - (RGRd/RGRw) · (D/W)} = a changed form of DDMPD index (DDMPD index: index for the decrease in dry matter partition into D). The following results were obtained: Equation (A) showed that DDMD was expressed using RGRd and RGRw as main factors in either of two different-type equations. It was suggested that there was a new equation analyzing DDMD, and using the new and previous equations some information was obtained for the change in dry matter digestibility with growth of forages.

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M3 - Article

AN - SCOPUS:0032372728

VL - 42

SP - 373

EP - 376

JO - Journal of the Faculty of Agriculture, Kyushu University

JF - Journal of the Faculty of Agriculture, Kyushu University

SN - 0023-6152

IS - 3-4

ER -

Two Different-Type Equations Analyzing Decrease in Dry Matter Digestibility with Growth of Forages

Abstract

All Science Journal Classification (ASJC) codes

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