Feed Value and Fermentation Quality of Wheat Grain Silage with Respect to Days after Heading in Honam Region of Korea
2018
Park, J.H., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Cheong, Y.K., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Kim, K.H., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Park, T.I., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Kim, Y.K., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Kang, C.S., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Yoon, Y.M., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Son, J.H., National Institute of Crop Science, RDA, Wanju, Republic of Korea | Lee, S.H., Seoul National University, Seoul, Republic of Korea
This study aimed to determine the optimal harvesting time for wheat to make grain silage, in Honam region of Korea. We harvested wheat grain every third day from 30 to 42 days after heading (DAH). The moisture content decreased from 61.6% at 30 DAH to 42.8% at 42 DAH. Yield of wheat grain significantly increased from 30 to 42 DAH (p less than 0.05). Yield at 39 DAH (3.46T/ha) was not significantly different from that at 42 DAH (p less than 0.05). With respect to the feed value of wheat grain silage, the amount of crude protein, crude fiber, and crude ash was different by harvesting time (p less than 0.05). However, the amount of total digestible nutrients (TDN) from 30 and 42 DAH was not significantly different. The pH of wheat grain silage from 30 to 42 DAH was between 3.8 and 4.5 and it was stable until 39 DAH (p less than 0.05). The lactic acid content of wheat grain silage from 30 to 42 DAH decreased from 3.08% to 1.10%. With respect to moisture content, yield, feed value, and fermentation, the optimal harvesting time for wheat grain silage was 39 DAH.
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