A field survey was carried out in Korea to asses the mineral composition of rice straw, which is a common feedstuff for cattle and goat in Korea, and to compare with rice straw in other Asian countries.
According to NRC tables, Korean rice straw provided adequate amounts of Mg, Ca, K, S, Mo, Mn and Zn. Phosphorus, Na, Cu and Se were deficient in 93, 70, 67 and 33% of samples, respectively. On the other hand, high amount of Fe in rice straw may impair Cu absorption by livestocks.
