Feeding Value of Whole Crop Rice Silage for Lactating Dairy Cows under High Ambient Temperature

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
42-03-12.pdf200.74 KB

Whole crop rice silage (WCRS) has recently attracted attention as forage for dairy cows. The nutritive value of WCRS (Forage rice cultivar: Nishiaoba) was examined by a balance trial (Experiment 1). The forage rice was harvested and ensiled in two ways (round-baled silage and container silage). On a dry basis, the contents of metabolizable energy, crude protein and neutral detergent fiber in WCRS were 1.7 Mcal/kg, 6.3% and 47.4%, respectively in round-baled silage, and 2.0 Mcal/kg, 7.4% and 46.6%, respectively in container silage. The feed value of Nishiaoba WCRS for lactating dairy cows under high ambient temperature was also investigated (Experiment 2). The daily milk yields of cows fed WCRS as part of their total mixed ration (rice TMR) and oats hay as part of their TMR (oats TMR) were 29.7 and 30.1 kg, respectively. The dry matter intakes (DMI) of cows when fed the rice TMR and oats TMR were 18.5 and 19.7 kg, respectively. There were no significant differences in DMI, milk yield and composition between cows fed the rice TMR and the oats TMR. The energy retention of the cows fed the rice TMR was significantly lower than that of the cows fed the oats TMR (P 0.05). WCRS can be given, with other adequate roughages and concentrates, to dairy cows that produce 30 kg of milk daily, even under high ambient temperature.

作成者 KAMIYA Yuko KAMIYA Mitsuru TANAKA Masahito SHIOYA Shigeru HATTORI Ikuo SATO Kenji SUZUKI Tomoyuki

energy metabolism

milk yield

公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 215
終了ページ 221
DOI 10.6090/jarq.42.215
権利 Japan International Research Center for Agricultural Sciences
言語 eng