Estimation of Rice Straw Adequacy as Ruminants Feed-in Java Based on Yield Area Conversion

Abstract Java is considered a center for the ruminant population and supplies cattle buffalo to several parts of Indonesia. Livestock increment needs adequacy feed, both quantity quality. Potential sources feeds are therefore needed be inventoried ensure sustainability feed adequacy. This study aimed estimate potential amount from rice straw in supporting production region. The method this was descriptive quantitative, using secondary data. as ingredients calculated yield area rice. converted grain production, which led availability. Dry matter (DM), crude protein (CP), total digestible nutrient (TDN) contents were used parameter. percentage three parameters collected previous studies. availability DM, CP, TDN straws then based on Animal Unit (AU). On other hand, requirement derived population. data AU, requirements studies (6.25 kg DM.AU -1 , 0.66 CP.AU 4.3 TDN.AU ). condition province compared classified into categories: surplus, sufficient, deficit. results showed that Banten, West Java, Central provinces sufficient adequacy, whereas East Yogyakarta deficient. suggests each should utilize alternative resources addition ensuring supply ruminant.