This study aimed was to examine the potential development of beef cattle in East Sumba Regency, East Nusa Tenggara Province, Indonesia. The study used a secondary data by analyzing the structure of livestock populations, livestock density, i.e., economic density, regional density and farming density. Location Quotient (LQ) was used to find out the comparative advantage of beef cattle in East Sumba Regency. The results of the analysis showed that the population of beef cattle in East Sumba Regency during the last five years (2014-2018) showed an increase in population of 2.03% per year, with population structure based on the age of livestock, i.e. 2.821 AU of calf, 5.342 AU of heifers and 29.843 AU of cattle. Livestock density in terms of economic density shows a dense category (> 300 AU/person) 55% in 12 districts, regional density showed a rare category (<10 AU/Km2) 81.82% in 18 districts and farming density showed a balanced category between moderate (0.25 - 1.0 AU/ha) and rare (<0.25 AU/ha), 45.45% in 20 districts. While districts with a LQ value > 1 (potential) was reached 40.91% are found in 8 districts namely Lewa, Nggaha Ori Angu, Karera, Kahaungu Eti, Pahunga Lodu, Rindi, Pandawai and Haharu. This showed that there were 8 districts that have a comparative advantage in beef cattle production.
Abstract. Watuwaya BK, Syamsu JA, Budiman, Useng D. 2022. Forage productivity in native grasslands of Haharu Sub-district, East Sumba District, Indonesia. Biodiversitas 23: 362-1368. The identification and management of native grasslands are important to ensure the availability of beef cattle feed in smallholder farms. This study aims to identify the existing native grasslands in Haharu Sub-district, East Sumba District, East Nusa Tenggara Province, Indonesia and analyze the botanical composition, biomass and the carrying capacity of the native grasslands. We used the combination of remote sensing approach and field survey to identify and measure the productivity of native grasslands. Sentinel 2A imagery was used to identify the area of existing native grasslands using Supervised Classification - Maximum Likelihood method. Meanwhile, the productivity of native grasslands was measured using the Dry Weight Rank method. The results of remote sensing and spatial analysis showed that the existing area of native grasslands in Haharu Sub-district was 324,10 km2 with an Overall Accuracy of 98.63% and Kappa Accuracy of 0.98. The vegetation analysis showed that the botanical composition of native grasslands consisted of grasses 94.42%, legumes 3.55% and weeds 2.07%. The carrying capacity of the studied grassland was 0.68 AU/ha/month in the wet season. In conclusion, the productivity of existing native grasslands in the wet season is still low and special efforts are needed to improve the quality.
Penelitian ini bertujuan untuk mengidentifikasi padang pengembalaan alam di Kecamatan Pandawai, Kabupaten Sumba Timur, Propinsi Nusa Tenggara Timur. Kecamatan ini memiliki tingkat populasi ternak ruminansia terbesar dan wilayah padang rumput terluas di Kabupaten Sumba Timur. Untuk menduga kapasitas tampung padang rumput perlu dilakukan suatu rangkaian tindakan identifikasi untuk memperoleh data luasan, letak dan keadaan topografi. Identifikasi secara manual sangat membutuhkan waktu dan tenaga kerja, melalui pendekatan teknologi pengindraan jauh akan mempersingkat waktu, tenaga serta meningkatkan presisinya. Metode yang digunakan adalah klasifikasi terbimbing dengan alogaritma kemungkinan maksimum (maximum likelihood) citra Sentinel-2A. metode confusion matrix digunakan untuk menguji keakurasian klasifikasi.. Klasifikasi kelas kelerengan menggunakan data digital elevation model dari DEMNAS. Hasil penelitian menunjukkan bahwa luas area non padang rumput sebesar 6.568 hektar, area padang rumput seluas 39.860 hektar. Hasil uji akurasi confusion matrix sebesar 91, 72%. Kelerengan terbagi dalam lima kelas, dimana luas area kelas 0 - 8% (31.691 Ha), 8-15% (1.433 Ha), 15-25% (2.203 Ha), 25-40% (362 Ha) dan >40% (10.888 Ha).
East Sumba Regency is an area with great potential for beef cattle development because of its large area and sufficient local forage resources as feed. Native grassland is a source of forage for ruminants, especially by smallholder farms in rural areas. This review paper aimed to analyze the Dry Weight Rank method as a method of measuring the botanical composition and distribution of forages. Referring to measurements of botanical composition, vegetation on grassland in the experimental plots and field studies can be explained using different parameters (plant density, cover, frequency or yield proportion). Each of the obtained parameters is capable of describing different features, which under certain circumstances may be correlated with each other to some extent, but are not completely equivalent. Therefore, the choice of parameters to be assessed depends on the objectives of the study. The choice of method depends primarily on the accuracy required, the affordability of efforts, and the available resources. The Dry Weight Rank method developed by Lt Mannetje and Haydock is one of the techniques referred to as a tool for measuring the botanical composition of native grassland.
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