- Volume 20 Issue 4
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Effects of Maturing Stage of Corn Hybrids on Silage Yield, Feeding Value for Dairy Cows and Milk Production in a Cold Region of Japan
- Oshita, Tomoko (National Agricultural Research Center for Hokkaido region) ;
- Takayama, Hideki (Hokuren Federation of Agricultural Cooperatives) ;
- Otsuka, Hiroshi (Hokuren Federation of Agricultural Cooperatives) ;
- Igarashi, Hiroaki (Hokuren Federation of Agricultural Cooperatives) ;
- Nonaka, Kazuhisa (National Livestock Breeding Center) ;
- Kume, Shinichi (Kyoto University)
- Received : 2006.04.17
- Accepted : 2006.09.17
- Published : 2007.04.01
This experiment was conducted to evaluate the effects of differently maturing corn hybrids on silage production and milk production per unit area in the northern part of Japan, where grain development occurs under decreasing ambient temperature. Both hybrids were harvested at the same time. The stages of maturity for the early-maturing hybrids (EH; 80 d relative maturity) and the mid-maturing hybrids (MH; 93 d relative day) were early dent and late dough stage, respectively. The plant yields for MH were higher than those for EH. The dry matter (DM) content of MH was lower than that for EH, and the effluent loss for MH silage was greater than that for EH silage. Therefore, the DM yields of prepared silage per area were similar for both treatments. Twelve multiparous mid-lactation Holstein cows (
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