マレーシア、タイにおける野草、稲わら中のミネラル含量について

抄録

Mineral concentrations of forages in Malaysia and Thailand were investigated in this study. Based on mineral requirements for cattle, 20.0% , 77.1% and 71.4% of native grass in Malaysia were found to be deficient in Ca, P and Na, respectively. As same as native grass in Malaysia, 47.4% , 68.4% and 52.6% of native grass in Thailand were deficient in Ca, P and Na, respectively. In one region in North- east Thailand where rice straw samples were collected, 63.3% , 100% , 46.7% and 66.7% of rice straw were deficient in Ca, P, Na and Cu, respectively and, in the other region, 30.0% , 90.0% , 55.0% and 55.0% of rice straw were deficient in the each mineral. On the other hand, 57.9% of native grass in Thailand and 30.0% of rice straw in one region in Northeast Thailand were found to be toxic level in Fe. More than 60% of rice straw had toxic level of Mn.