UTILITAS PUCUK TEBU TEROLAH DENGAN TEKNOLOGI AMOFER SEBAGAI PAKAN SAPI PERANAKAN ONGOLE (The Utility of Sugar Cane Top Processed by “Amofer” Technology as “Peranakan Ongole” Cattle Feed)

Abstract

ABSTRACT This investigation was conducted to study the in vivo utility of sugar cane top processed by ammoniation-fermentation (“Amofer”) technology as “Peranakan Ongole” (PO) cattle feed. Sugar cane top from TR1 sugar cane Var Bz-48 has been being used in this research, urea as ammonia source, Trichoderma reesei isolate, rice bran as substrate to Trichoderma reesei sporulation and 20 heads of male PO cattle. The sugar cane top was processed by combination between 8% ammoniation and 4 weeks fermentation (Widiyanto, 1996). Twenty heads of cattle were devided into four groups consist of five heads, repectively. The first group was provided non processed sugar cane top, the second group was provided processed sugar cane top without pelleting and wafering, third group was offered pellet processed sugar cane top. The measured variables consist of ffed intake, in vivo dry matter and organic matter digestibility, molar proportion of ruminal volatile fatty acids (VFA’s), digestibility energy (DE), total digestible nutrient (TDN), and nitrogen retention. The collected were analyzed statistically by analysis of variance (ANOVA) in completely randomized design in pellet and wafer form were higher than unprocessed sugar cane top. Consumption of processed sugar cane top in pellet form was highest than the other treatment groups (namely 5.255 kg/head/day). The dry matter digestibility of processed sugar cane top were higher than unprocessed sugar cane top. The digestibility of processed sugar cane top without physical treatment was highest than the other treatment groups (63,20%). Feeding processed sugar cane top increased digestible energy (DE) consumption and nitrogen retention. The highest DE consumption and N retention were found in treatment group received processed sugar cane top in pellet form (namely 13.24 Mcal/day and 19.25 g/day, respectively). Keywords : Sugar cane top; amofer; pellet; wafer; PO cattle; utility