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Influence of Ripening Stages on the Quality of Whole Crop Silage and Grain Silage of Fodder Rice

  • Maruyama, S. (Gifu Prefectural Livestock Research Institute) ;
  • Yokoyama, I. (Gifu Prefectural Livestock Research Institute) ;
  • Asai, H. (Gifu Prefectural Livestock Research Institute) ;
  • Sakaguchi, S. (Gifu Prefectural Livestock Research Institute) ;
  • Ohtani, T. (Gifu Prefectural Livestock Research Institute) ;
  • Yokota, H. (Laboratory of Animal Feeds and Production, University Farm, Graduate School of Bioagricultural Sciences Nagoya University) ;
  • Kita, K. (Laboratory of Animal Feeds and Production, University Farm, Graduate School of Bioagricultural Sciences Nagoya University)
  • Received : 2004.06.17
  • Accepted : 2004.11.19
  • Published : 2005.03.01

Abstract

In high-income Asian countries like Korea and Japan, per capita rice consumption has declined because of the change in consumer' favorite foods from rice to high-cost quality foods. This has forced farmers to reduce rice production. Although fodder rice could be another option to be cultured by farmers, available information concerning rice grain silage has been limited. In the present study, therefore, the difference in the quality of fodder rice silage prepared from either whole crop or grain at different ripening stages was compared. Various supplements were also added into whole crop and grain silages of fodder rice before ensiling, and thereafter, the palatability of prepared silages was determined by beef cattle. At ear emergence stage, the pH values for both grain and whole crop silages were approximately 4.5. In both grain and whole crop silages, the pH values were significantly increased by progressing ripening stages from milk-ripe stage to yellow-ripe stages, and the increase in pH value for grain silage was faster than that for whole crop silage. In the grain silage, the higher lactic acid (LA) content in grain silage seemed to be, the lower pH value was. Both in grain and whole crop silages, pH was significantly decreased by supplementation with LA bacteria. There were no significant differences in feed intake among any treatment groups.

Keywords

Fodder Rice;Whole Crop Silage;Grain Silage;Ripening;Silage Quality

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