The Effect of The Use of Fish Flour as a Source of Protein in Complete Feeds on The Digestivenes of Fat, Crude Fiber and Nitrogen-Free Extract in Bali Cattle Fattened

The research has been carried out for 3 months, starting from May 13 to August 13, 2021 in the experimental cage of the Faculty of Agriculture, University of Timor, while the analysis of digestibility of fat, crude fiber, and Extract Material Without Nitrogen (EMWN) at the Chemistry Laboratory of the Faculty of Animal Husbandry, University of Nusa Cendana. The purpose of this study was to determine the effect of using fish meal as a protein source in a complete feed on the digestibility of fat, crude fiber, and EMWN in fattened male bali cattle. The method used in this study was a completely randomized design (CRD) which consisted of 3 treatments and 5 replications so that there were 15 experimental units. The treatments were: T1= Natural grass 30% + Milled corn 42% + Rice bran 13% + Brand Pollard 11% + Fish meal 4%, T2= Natural grass 30% + Milled corn 42% + Rice bran 9% + Brand Pollard 11% + fish meal 8%, T3=. Natural grass 30% + Milled corn 42% + Rice bran 5% + Brand Pollard 11% + fish meal 12%. The variables tested included Fat Digestibility (%), Crude Fiber Digestibility (%) and EMWN Digestibility%. The results of analysis of variance showed that digestibility of crude fat and digestibility of crude fiber had a significant effect (P0.05) on the percentage of digestibility of fat produced T1: 19.06%; T2; 34.11%; T3: 69.31%, digestibility of crude fiber produced T1: 42.13%; T2: 29.02%; T3: 18.52% and the resulting EMWN T1: 65.01%; T2: 60.28%; T3: 62.31%. It can be concluded that the use of completed feed prepared with fish meal containing 12% protein increased the crude fat digestibility value but the crude fat digestibility was lower when compared to 4% fish meal and 8% in fattened bali cattle. Meanwhile, the digestibility of EMWN was not affected by the use of different levels of fish meal in complete feeds.The study was conducted for 3 months, starting from May 13 to August 13, 2021, in the experiment cage of the Faculty of Agriculture, Universitas Timor, while the analysis of fat digestibility, crude fiber, and NFE (Nitrogen-Free Extract) was performed in the Chemical Laboratory of the Faculty of Animal Husbandry, Universitas Nusa Cendana. This study aimed to identify the effects of using fish powder as a source of protein contained in a complete feed against the fat digestibility, crude fiber, and NFE in male Bali cattle that are fattened. This study used a Completely Randomized Design (CRD) consisting of 3 treatments and 5 repetitions, so the total was 15 experimental units. The treatments given to the objects included T1= 30% Natural Lawn + 42% Corn Stove + 13% Rice Bran + 11% Brand Pollard + 4% Fish Powder, T2= 30% Natural Lawn + 42% Corn Stove + 9% Rice Bran + 11% Brand Pollard + 8% Fish Powder, and T3= 30% Natural Lawn + 42% Corn Stove + 5% Rice Bran + 11% Brand Pollard + 12% Fish Powder. The investigated variables included Fat Digestibility (%), Crude Fiber Digestibility (%), and NFE Digestibility (%). The result of the Analysis of variance showed that the crude fat digestibility and crude fiber digestibility had a significant effect (P0.05) the percentage of Fat Digestibility (T1: 19.06%; T2: 34.11%; and T3: 69.31%), Crude Fiber Digestibility (T1: 42.13%; T2: 29.02%; and T3: 18.52%), and NFE (T1: 65.01%; T2: 60.28%; and T3: 62.31%). In conclusion, the use of complete feed containing fish powder with 12% protein can increase the percentage of crude fat digestibility, while the crude fat percentage will be lower if using fish powder with 4% and 8% protein in male Bali cattle that are fattened. Meanwhile, the NFE digestibility is not affected by a different percentage of fish powder contained in complete feed