TY - JOUR
T1 - Relationship between Two Different-Type Equations Analyzing Increase in Dry Matter Indigestibility 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
Y1 - 1998/3
N2 - This study was planned to relate two different-type equations analyzing the increase in dry matter indigestibility (IDMI) in the growth of forages. The following equation showed the relationship between two equations, namely, the the left-hand side equation by Masuda (1985) and the right-hand side equation which was a changed form of the original equation by Shimojo et al. (1995). I1/W1 · [exp {(RGRi - RGRw) · (t2 - t1)} - 1] = (1 - W1/W2) · (SFR/RGRw · D/W - I1/W1), where W = forage dry weight (W1 ≠ W2), I = dry weight of indigestible materials, D = dry weight of digestible materials (D1 ≠ D2), RGRw = mean relative growth rate of forage, RGRi = mean relative growth rate of I, (1 - W1/W2) = forage growth index [FG index], SFR = mean specific formation rate of I per unit D, D/W = the ratio of D to W [D ratio], {(SFR/RGRw) · (D/W) -I1/W1} = a changed form of DMP index (DMP index: index for dry matter partition into I). The following results were obtained: RGRi was found to be related to SFR from their positions in the equation, and this might support the suggestion by Masuda (1985) about the close relation of RGRi to SFR. SFR might substantially relate the equation by Masuda (1985) and the equation by Shimojo et al. (1995). It was suggested that there was a close relationship between two different-type equations analyzing the increase in dry matter indigestibility with growth of forages.
AB - This study was planned to relate two different-type equations analyzing the increase in dry matter indigestibility (IDMI) in the growth of forages. The following equation showed the relationship between two equations, namely, the the left-hand side equation by Masuda (1985) and the right-hand side equation which was a changed form of the original equation by Shimojo et al. (1995). I1/W1 · [exp {(RGRi - RGRw) · (t2 - t1)} - 1] = (1 - W1/W2) · (SFR/RGRw · D/W - I1/W1), where W = forage dry weight (W1 ≠ W2), I = dry weight of indigestible materials, D = dry weight of digestible materials (D1 ≠ D2), RGRw = mean relative growth rate of forage, RGRi = mean relative growth rate of I, (1 - W1/W2) = forage growth index [FG index], SFR = mean specific formation rate of I per unit D, D/W = the ratio of D to W [D ratio], {(SFR/RGRw) · (D/W) -I1/W1} = a changed form of DMP index (DMP index: index for dry matter partition into I). The following results were obtained: RGRi was found to be related to SFR from their positions in the equation, and this might support the suggestion by Masuda (1985) about the close relation of RGRi to SFR. SFR might substantially relate the equation by Masuda (1985) and the equation by Shimojo et al. (1995). It was suggested that there was a close relationship between two different-type equations analyzing the increase in dry matter indigestibility with growth of forages.
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M3 - Article
AN - SCOPUS:0032400450
VL - 42
SP - 361
EP - 364
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 -