Penelitian ini bertujuan untuk mengetahui bagaimana perilaku petani udang vanname terhadap kemunculan penyakit. Pendekatan penelitian yang digunakan adalah kualitatif deskriptif. Sampel pada penelitian sebanyak 21 pelaku budidaya di Desa Kasano, Kecamatan Baras, Kabupaten Pasangkayu. Metode pengumpulan data melalui wawancara dan kuesioner, selanjutnya teknik analisis data yang digunakan adalah deskriptif. Deskriptif yaitu metode untuk mengetahui dan memberikan gambaran mengenai data primer yang telah dikumpulkan. Hasil dari penelitian ini, memprlihatkan bahwa secara keseluruhan udang vanname yang dipelihara oleh petani pembudidaya di Desa Kasano, Kecamatan Baras, Kabupaten Pasangkayu mengalami kematian dini yang belum diketahui penyakitnya. Udang vanname yang dipelihara oleh petani pembudidaya dengan menerapkan pencegahan penyakit menggunakan antibiotik mengalami penyakit berak putih (white feces disease). Dapat disimpulkan bahwa perilaku petani dalam pencegahan penyakit berpengaruh terhadap kemunculan penyakit.
One effort to reduce the role of protein as an energy source in feed is to maximize the use of feed carbohydrates as an energy source and engineering optimization of feed utilization can be done by adding exogenous digestive enzymes to feed. This study aims to determine the level of carbohydrates in the feed after being given cow rumen liquid which gives the best growth response and hepatosomatic index in milkfish. This study was designed using a completely randomized design (CRD) consisting of 4 treatments and 3 replications, Thus, there are 12 experimental units. The treatments were feeding with different levels of carbohydrate feed, namely 27,81; 39,50; 46,97 and 56,75% mixed with 80 mL of rumen liquid per 100 g of feed. Feed was given to juvenile milkfish measuring 7.19±0,036 g which was kept in a recirculating aquarium with a density of 15 fish/45 L of brackish water. The provision of various levels of carbohydrates in the feed had an effect (α<0.05) on relative growth and survival but had no effect (α>0.05) on the hepatosomatic index of milkfish. Statistically, the best relative growth response and survival were found in fish fed with a carbohydrate-level feed treatment of 27,81; 39,50; 46,97%.
Proses fermentasi menggunakan Aspergillus niger maupun Rhizopus oligosporus mampu meningkatkan kualitas nutrisi ampas tahu. Sehingga penelitian menguji kemampuan kombinasi antara jamur R. oligosporus dan A. niger dalam proses fermentasi guna peningkatan kualitas ampas tahu. Penelitian ini bertujuan untuk mengetahui jenis kapang yang lebih efektif untuk meningatakan kualitas nutrisi limbah ampas tahu sebagai sumber bahan baku pakan ikan, selanjutnya didesain menggunakan rancangan acak lengkap (RAL), terdiri dari 4 perlakuan dan 3 ulangan. Parameter penelitian ini adalah komposisi nutrisi ampas tahu setelah proses fermentasi yang dianalisis menggunakan analisis ragam, jika terdapat perlakuan yang nyata (P>0,05) dilanjutkan dengan uji W-Tuckey. Berdasarkan hasil analisis ragam memperlihatkan bahwa perlakuan fementasi dengan menggunakan jamur berbeda berpengaruh nyata (p<0,5) terhadap peningkatan kualitas nutrisi limbah ampas tahu. Perlakuan fermentasi terbaik dalam penelitian ini untuk meningkatkan nilai nutrisi limbah ampas tahu perlakuan kombinasi A. niger + R.oligosporus yang mampu meningkatkan hingga 13,45±0,02% kadar protein; 2,27±0,02% lemak dan menurunkan serat kasar hingga 24,85±0,05%.
Efforts to reduce protein in fish feed by maximizing the use of carbohydrates as an energy source must be supported by exogenous enzymes. One source of exogenous enzymes that can be used as a polysaccharide degrading agent easily obtained and wasted is rumen liquid in slaughterhouses (RPH). This study aims to determine the most effective carbohydrate level after being given rumen liquid as a source of exogenous enzymes in maximizing nutrient digestibility and feed efficiency in milkfish (Chanos chanos Forsskal). This study was designed using a Completely Randomized Design (CRD) which consisted of 4 treatments and three replications. Thus there were 12 experimental units. The treatments tested were feeds with various levels of carbohydrates (27.81%; 39.50%; 46.97%; and 56.75%) then given cow rumen liquid as a source of the enzyme at a dose of 80 mL/100 g of feed. Nutrient digestibility and feed efficiency data obtained were analyzed by analysis of variance (ANOVA) and continued with the W-Tuckey test. The results showed that feeding with various levels of carbohydrates in the feed that was first given cow rumen liquid waste had a significant effect (P<0.05) on fibre digestibility, carbohydrate digestibility, and feed efficiency of milkfish, but had no significant impact (P>0.05) on total digestibility, protein digestibility, and fat digestibility of milkfish. The most effective carbohydrate level in feed after being given cow rumen liquid which can optimize nutrient digestibility and feed efficiency of milkfish, is 46.97%.
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