The research was aimed to evaluate used dahlia tubersextract as inulinsource onnitrogen retention and feed conversion of crossbred local chicken (male native chicken × female laying hen). Three weeks old 160 unsex birds with average body weight 180.46±1.21g were kept until 8 weeks. The experimentwas designed ascompletely randomized design with 4 treatments and 4 replications (@10 birds). Treatments applied were T0: basal ration, T1: ration + 0.39% extract, T2: ration + 0.78% extract, T3: ration + 1.17% extract. Parameters observed werenitrogen retention, energy metabolism and feed conversion. The data were statistically analyzed according to ANOVA and continued by Duncan test at the level of 5%. The results showed that feeding dahlia tuberextract significantly affect (P<0.05) nitrogen retentionwith value T0-T3 (1.3g, 1.47g, 1.43g, 1.7g)and feed conversion (4.15, 3.58, 3.75, 3.47), but not significant of energy metabolism. In conclusion, the higher levels of feeding inulin in the form of extract in T3 (1.17%), increase nitrogen retention and improve feed conversionof crossbred local chicken.

ABSTRAKTujuan penelitian adalah mengevaluasi level penambahan minyak ikan lemuru dalam ransum ayam kampung terhadap profil lemak darah.Materi penelitian yang digunakan adalahayam kampung betina umur 24 minggu. Bahan pakan yang digunakan adalah minyak ikan lemuru, bekatul, jagung giling, bungkil kedelai, minyak sawit, tepung ikan, dan premix multi mineral dan vitamin. Metode penelitian menggunakan rancangan acak lengkap (RAL).  Perlakuan yang diberikan adalah T0 = Penggunaan minyak ikan lemuru sebanyak 0%, T1 = Penggunaan minyak ikan lemuru sebanyak 2%, T2 = Penggunaan minyak ikan lemuru sebanyak 4%, T3 = Penggunaan minyak ikan lemuru sebanyak 6%. Parameter yang diamati adalah kolesterol total, kadar High Density Lipoprotein (HDL) dan Low Density Lipoprotein (LDL) darah ayam kampung. Data dianalisis menggunakan analisis variansi yang dilanjutkan uji duncan.Hasil penelitian menunjukkan bahwa perlakuan dengan minyak ikan lemuru pada level tertinggi berpengaruhnyata (P<0,05) terhadap kolesterol total, kadar HDL dan LDL darah.Kesimpulan penelitian adalah pemberian minyak ikan lemuru sampai 6% dapat digunakan dalam campuran pakan ayam kampung.Kata kunci: Profil lemak darah, ayam lokal, minyak ikan lemuruABSTRACTThe aimed of the study was to evaluate the level of addition lemuru fish oil in the ration of local chicken on the blood fat profile. The research materials used was female local chickens aged 24 weeks. The feed materials used are lemuru fish oil, rice bran, milled corn, soybean meal, palm oil, fish meal as well as multimineral and vitamin premix. The research method using a complete by randomized design. The treatments are given wereT0= lemuru fish oil as much as 0%, T1 = lemuru fish oil as much as 2%, T2 = lemuru fish oil as much as 4%, T3 = lemuru fish oil as much as 6%. The observed variables were total cholesterol, levels of high-density lipoprotein (HDL) and low-density lipoprotein (LDL) of local chicken blood. The data were analyzed using analysis of variance and was continued with Duncan test. The results showed that the treatment with lemuru fish oil at the highest level had a significant effect (P<0.05) on total cholesterol, HDL levels, and LDL blood. The conclusion of the study is that the provision of lemuru fish oil up to 6% can be used in native chicken feed mix.Keywords: The blood fat profile, local chicken, lemuru fish oil

ABSTRAKPenelitian ini bertujuan untuk mengevaluasi pemberian ekstrak umbi bunga dahlia sebagai sumber inulin terhadap retensi nitrogen dan konversi pakan ayam lokal persilangan (ayam kampung jantan dengan ayam niaga petelur betina). Materi yang digunakan adalah ayam lokal persilangan (unsex) sebanyak 160 ekor umur 3 minggu yang diseragamkan bobot badan dengan rata-rata 180,46±1,21 g dan diberi perlakuan selama 8 minggu. Rancangan yang digunakan adalah rancangan acak lengkap (RAL) dengan 4 perlakuan dan 4 ulangan (@10 ekor). Perlakuan yang diuji sebagai berikut : T0 (Ransum basal tanpa ekstrak umbi dahlia sebagai kontrol), T1 (Ransum basal + ekstrak umbi dahlia 0,39%), T2 (Ransum basal + ekstrak umbi dahlia 0,78%), T3 (Ransum basal + ekstrak umbi dahlia 1,17%). Parameter penelitian yang diamati adalah retensi nitrogen, nilai energi metabolis dan konversi pakan. Data yang diperoleh diolah dengan ANOVA dan dilanjutkan dengan Uji Duncan taraf 5%. Pemberian ekstrak umbi dahlia berpengaruh (P<0,05) terhada pretensi nitrogen dengan nilai T0-T3 (1,3g, 1,47g, 1,43g, 1,7g) dan konversi pakan (4,15, 3,58, 3,75, 3,47), namun tidak berpengaruh pada nilai energi metabolis. Dapat disimpulkan bahwa penggunaan inulin dari ekstrak umbi dahlia level tertinggi T3 (1,17%) dapat meningkatkan retensi nitrogen dan memperbaiki konversi pakan ayam lokal persilangan. T0-T3 (1.3g, 1.47g, 1.43g, 1.7g)and feed conversion (4.15, 3.58, 3.75, 3.47), but not significant of energy metabolism. In conclusion, the higher levels of feeding inulin in the form of extract in T3 (1.17%), increase nitrogen retention and improve feed conversionof crossbred local chicken.

Tujuan penelitian yaitu untuk mengkaji pengaruh prebiotik alami yang bersumber dari inulin umbi Gembili dalam upaya meningkatkan kesehatan dan performa pertumbuhan broiler. Rancangan penelitian menggunakan rancangan acak lengkap (RAL) dengan 4 perlakuan dan 5 kali ulangan yang diisi masingmasing 10 ekor ayam. Perlakuan meliputi: P0 = Ransum kontrol tanpa tepung umbi Gembili, P1 = Ransum + 0,5% tepung umbi Gembili, P2 = Ransum + 1,0% tepung umbi Gembili, dan P3 = Ransum + 1,5% tepung umbi Gembili. Variabel yang diamati yaitu performa broiler (konsumsi ransum, PBB, dan FCR) dan persentase bobot organ limfoid (bursa fabrisius, tymus, dan limpa). Data yang diperoleh kemudian dianalisis ragam ANOVA, jika berpengaruh nyata maka dilanjutkan uji Duncan. Hasil penelitian memperlihatkan bahwa penggunaan inulin umbi Gembili memberikan pengaruh yang nyata (P<0,05) terhadap PBB dan FCR tetapi tidak berpengaruh terhadap konsumsi pakan pada broiler. Status kesehatan broiler yang meliputi persentasi bobot relatif bursa fabrisius juga menunjukkan perbedaan nyata (P<0,05) namun tidak berpengaruh pada berat relatif tymus dan limpa. Kesimpulan penelitian bahwa level tertinggi pemberian tepung umbi Gembili yaitu sebesar 1,5% memberikan pengaruh paling baik terhadap peningkatan performa pertumbuhan dan status kesehatan broiler.

The research was aimed to evaluate feeding effect of powder and extract of dahlia tuber as a sources of inulin prebiotic on proteindigestibility and productivity of crossbred local chicken. A total of 280 unsex local crossbred chicken with the age of 22 days and average weightof 180.46±1.21 g was assigned in a completely randomized design with 7 treatments and 4 replications (10 birds each). Dietary treatmentsconsist of T0 (basal ration), T1 (T0 + 0.4% dahlia powder), T2 (T0 + 0.8% dahlia powder), T3 (T0 + 1.2% dahlia powder), T4 (T0 + 0.39%dahlia extract), T5 (T0 + 0.78% dahlia extract), T6 (T0 + 1.17% extract dahlia). Treatment was conducted for 8 consecutive weeks. Variablesobserved were protein digestibility, short chain fatty acid (SCFA), muscle protein mass, muscle calsium mass, and body weight. The data wereanalyzed using ANOVA and followed by Duncan test at the level of 5%. The results showed that feeding inulin in the form of powder or extract ofdahlia tuber significantly (P<0.05) increased protein digestibility, SCFA level, and body weight. Treatments T2 until T6 significantly (P<0.05)increased muscle calsium mass but did not increase muscle protein mass. In conclusion, the used of 1.2% dahlia powder and 1.17% extractdahlia tuber as an inulin source increase protein digestibility and productivity of crossbred local chicken.Key words: inulin, dahlia tuber, crossbred local chicken