Perbandingan Kualitas Ransum Domba Organik dan Non-organik dengan Perlakuan Fermentasi dan Non-fermentasi Berdasar Studi In vitro

Abstract

The development of organic livestock currently still has obstacles, one of which in terms of feed is the limited organic feed and the low quality of organic feed. one indicator that can be used to support the development of organic livestock is to make organic rations that are integrated with organic farming. The purpose of this study was to determine the difference in the quality of organic (85%) and non-organic rations and the effect of fermentation on the quality of ration nutrients, digestibility, and rumen environmental conditions to help farmers who want to start a farming business with an organic cultivation system. The treatments in the study consisted of P1 (Organic 85%); P2 (Non-organic); P3 (Fermented Organic); P4 (Fermented Non-organic). The feed ingredients used were rice straw, rice bran, pollard, corn, fish meal, azolla, molasses, salt, and calcium source (CaCO3). Non-organic feed ingredients were taken from Lampeji Village, Mumbulsari District, Jember Regency. The organic feed ingredients used consisted of rice straw and bran (Lombok Kulon Organic Farm), azolla (self cultivation using manure). Fermentation was carried out for 21 days using starbio probiotic starter. Proximate analysis and in vitro tests of feed quality were conducted at the Laboratory of the Livestock Research Center, Bogor, West Java. Parameters analyzed in this study included moisture content, ash, crude protein (PK), crude fat (LK), crude fiber (SK), extract material without nitrogen (BETN), total digestible nutrient (TDN), digestibility of dry matter (KcBK), digestibility of organic matter (KcBO), volatile fatty acid (VFA), ammonia (NH3) and rumen pH. The results obtained were analyzed using quantitative descriptive method. Based on data analysis, it is known that P2 (non-organic ration) has the best nutrient quality consisting of moisture content (55.22%), PK (13.48%), LK (4.40%), SK (10.77%), BETN (55.42%), and TDN (67.93%). Based on the digestibility value and rumen environmental conditions, it is known that the best ration is found in P4 (fermented non-organic ration) which consists of KcBK (67.99%), KcBO (64.48%), Total VFA (73.54 mmol), and NH3 (15.13 mM), although the pH value of this treatment is slightly above the normal limit of 7.43. Based on the research results, it can be concluded that fermentation treatment is proven to increase ration digestibility by producing ideal rumen conditions.