Kecernaan Dan Fermentabilitas Hijauan Orok-orok Secara in Vitro Sebagai Bahan Pakan Yang Ditanam Secara Tumpangsari Dengan Jagung Manis (in Vitro Digestibility and Fermentability of Orok-orok Forage Yield in Intercropping System with Sweet Corn as Feed)

摘要

This research was conducted to evaluate the digestibility and in-vitro fermentability of orok-orok forage yielded in intercropping with sweet corn within different densities. A Completely Randomized Block Design (CRBD) was applied in 3 x 2 factorial and 4 replications. The first factor was plant density factor (6, 12, 18 plants/m2) among corn crops and the second one was line number of orok-orok (1 and 2) among corn plants, spacing 100 cm x 25 cm. The digestibility of Dry Matter (DoDM), the Digestibility of Organic Materials (DoOM), the production of volatile fatty acids (VFA) and the concentration of ammonia (NH3) were measured on fodder of orok-orok. Different plant lines of orok-orok with increasing density did not influence the DoDO, DoDM, and VFA, the value were 44.63% ± 48.09%; 49,35% ± 52.07%; 126.26 mM ± 136,25 mM; but decreased (P<0,05) the concentration of NH3, average value was 6.06 mM ± 7.06 mM. It can be concluded that neither line number of orok-orok plant nor the plant density up to 12/m2 of orok-orok plant in an intercropped system with corn plant influenced their nutrional quality as well as digestability and fermentability.