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All Journal Biodiversitas Journal of Biological Diversity
ANURAGA JAYANEGARA
Department of Nutrition and Feed Technology, Faculty of Animal Science, Institut Pertanian Bogor. Jl. Agatis Kampus IPB Darmaga, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Evaluation of nutritional values of tree-forage legume leaves from Gunungkidul District, Indonesia I NYOMAN GUNA DARMA; ANURAGA JAYANEGARA; AHMAD SOFYAN; ERIKA BUDIARTILACONI; MUHAMMAD RIDLA; HENDRA HERDIAN
Biodiversitas Journal of Biological Diversity Vol. 24 No. 5 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240527

Abstract

Abstract. Darma ING, Jayanegara A, Sofyan A, Budiartilaconi E, Ridla M, Herdian H. 2023. Evaluation of nutritional values of tree-forage legume leaves from Gunungkidul District, Indonesia. Biodiversitas 24: 2733-2744. This study aimed to assess the nutritional value of tree legume leaves found in Gunungkidul District. A completely randomized design with 19 treatments (legume species) and six replications (nylon bags) was employed. The study evaluated the chemical composition, in sacco dry and organic matter degradation characteristics, and their correlation with the chemical composition. The results indicated variations in the crude protein (CP) content (12.44% to 26.9%), crude fiber (CF) content (16.13% to 27.38%), total digestible nutrients (TDN) (71.10% to 88.17%), and total phenol content (2.47% to 21.87%) on a dry matter basis. Among the legume species, Indigofera tinctoria L. exhibited the highest soluble fraction (a) values for dry matter (42.89±1.15%) and organic matter (40.32±1.37%). Additionally, I. tinctoria displayed the highest potential degraded fraction values (a+b) for dry matter (88.33±0.90%) and organic matter (88.12±0.95%). The effective degradation of dry matter (EDDM) and organic matter (EDOM) were 64.57±0.48% and 63.78±0.68%, respectively. The correlation coefficients (r) between ash, CP, TDN, CF, total phenol, and EDDM and EDOM values were 0.54, 0.58, 0.53, -0.73, -0.53, and 0.52, 0.55, 0.52, -0.72, -0.56 respectively. In conclusion, tree-forage legume leaves from Gunungkidul District exhibited varying nutritional values, with I. tinctoria showing the highest values for effective dry and organic matter degradation compared to other tree legumes. The ash content, CP, and TDN demonstrated positive correlations with the EDDM and EDOM values, whereas the CF content and total phenol exhibited negative correlations with the EDDM and EDOM values of tree legume leaves.
Vegetation diversity based on peat hydrological units for supporting cattle production in West Kalimantan, Indonesia DUTA SETIAWAN; ANURAGA JAYANEGARA; NAHROWI NAHROWI; NUR ROCHMAH KUMALASARI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 5 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250518

Abstract

Abstract. Setiawan D, Jayanegara A, Nahrowi, Kumalasari NR. 2024. Vegetation diversity based on peat hydrological units for supporting cattle production in West Kalimantan, Indonesia. Biodiversitas 25: 2011-2019. This study determined the characteristics of forage supply, composition, and diversity in various West Kalimantan Peat Hydrological Units (PHU) and the capacity for livestock development. The methods used were a combination of surveys, direct observations, and measurements of samples of peat hydrological units commonly used as pasture by farmers. The results showed that the pattern of providing forage for livestock is that the majority of farmers are in the productive age category (41-60 years), the education level was only elementary school, livestock farming was only a side business (78.33-81.67%), and the mowing capacity was still above livestock feed requirements. Important Value Index (IVI) in Mempawah Ageratum conyzoides (32.34%), Pontianak IVI Digitaria sanguinalis (27.17%), Kubu Raya IVI Cyperus brevifolius (22.43%). The forage species diversity index (H) of the three districts in West Kalimantan was classified as moderate or high. The species Richness Indices (R') for Mempawah, Pontianak, and Kubu Raya were 5.01, 6.22, and 6.41, respectively. The carrying capacity index in Kubu Raya (2.01) and Mempawah (5.19) was included in the safety criteria because it has a CCI above 2. In conclusion, The West Kalimantan livestock population can be increased by utilizing land in rice fields, dry fields, community forests, and plantations as a source of diverse forage vegetation.
Methane emission and nutritive evaluation of green, black, oolong, and white tea leaves SRI WAHYUNI; ASEP SUDARMAN; AHMAD SOFYAN; DESSY PERMATA; I NYOMAN GUNA DARMA; DIKY RAMDANI; NANIK HIDAYATIK; ANURAGA JAYANEGARA
Biodiversitas Journal of Biological Diversity Vol. 26 No. 7 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260733

Abstract

Abstract. Wahyuni S, Sudarman A, Sofyan A, Permata D, Darma ING, Ramdani D, Hidayatik N, Jayanegara A. 2025. Methane emission and nutritive evaluation of green, black, oolong, and white tea leaves. Biodiversitas 26: 3423-3433. This study aimed to evaluate the impact of non-fermented and fermented leaves of green tea, black tea, oolong tea, and white tea on nutritive value, methane emission, and in vitro ruminal fermentation characteristics. Each type of tea leaves was prepared in both fresh (non-fermented) and fermented forms. Fermented tea leaves were treated with water in a 1:2 ratio. Each treatment was prepared in five replicates and incubated for 30 days. A completely randomized factorial design was applied, with tea type as the primary factor and fermentation status (non-fermented and fermented) as the secondary factor. Results revealed that the highest crude protein content was found in white tea (29.41%), followed by green tea (17.87%). There was a significant effect (p<0.05) of tea types on IVDMD and IVOMD, with fresh oolong tea exhibiting the highest value and white tea the lowest. Excellent fermentation profiles were observed among different tea types (p<0.001) regarding gas production after 48 hours, with fresh green tea producing the highest amount. The highest methane production was observed in fermented green tea (2.35%), while the lowest was in fermented oolong tea (0.89%). Fermented oolong tea as a feed additive in ruminant diets may reduce enteric methane production, potentially improving feed efficiency. In conclusion, fermentation is able to maintain the nutritional quality of tea leaves but the effect on methane emission is varied.
Co-Authors AHMAD SOFYAN ASEP SUDARMAN DESSY PERMATA DIKY RAMDANI DUTA SETIAWAN ERIKA BUDIARTILACONI HENDRA HERDIAN I NYOMAN GUNA DARMA I NYOMAN GUNA DARMA MUHAMMAD RIDLA NAHROWI NAHROWI NANIK HIDAYATIK NUR ROCHMAH KUMALASARI SRI WAHYUNI