Improving Rumen Fermentability and Fiber Fraction Digestion of Fermented Rice Straw with A Cattle Feed Supplement and A Concentrate

Ramaiyulis, Ramaiyulis and Eva, Yulia and Fati, Nelzi and Salvia, Salvia and Nilawati, N (2020) Improving Rumen Fermentability and Fiber Fraction Digestion of Fermented Rice Straw with A Cattle Feed Supplement and A Concentrate. IJZR, 7 (2). pp. 35-40. ISSN 348–1854

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Abstract

This study aimed to obtain the best ration with the use of fermented rice straw (RF) as a basal feed for cattle farms. The RF was made by fermenting rice straw using Rhizopus oligosporus. The concentrate consisted of many locally available feed ingredients. The supplement was composed of several feeds as a multinutrient to supplement any deficiencies in the ration. There were 4 treatment rations: RF = 100% RF (control), RFS = RF + 10% supplement, RFSC = RFS + 10% concentrate, and RFSC2 = RFS + 20% concentrate. The rations were tested by in vitro digestion using bovine rumen fluid and 48 hours of incubation at 39 °C under anaerobic conditions. The results showed that the addition of the supplement significantly increased the digestibility of the dry matter, organic matter, crude protein, and hemicellulose, while the addition of the concentrate significantly increased the concentration of VFAs and the digestibility of NDF and cellulose. The best composition was an 80:10:10 (% DM) mixture of RF, supplement and concentrate.

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