Abstract. Mud crab shell is one of the most fisheries waste can be utilized as calcium source because it contains lots of calcium carbonat. Utilizing of crab shells flour in fed is important applied as calcium supplements to freshwater prawn. The purpose of this research is to knows the effects of calcium addition from mud crab shells on fed to increase the growth rate, survival rate and moulting frequency freshwater prawn. The research has been done during 70 days in fisheris Laboratory, Abulyatama University. Result of the research shows that two percents calcium addition on fed give higher growth rate value, survival rate value and moulting frequency value than other treatments and were not added calcium on fed. The average of freshwater prawn growth rate are treatment A (0% CaO)= 1.20 g, B (1% CaO) = 1.41 g, C (2% CaO) = 1.92 g, D (3% CaO) = 1.77 g. The average of freshwater prawn survival rate result shown by treatment A = 75 %, B = 91,1 %, C = 91,1 %, and D = 89 %. The moulting frequency value results shown by treatment A = 1,06 ; B = 1,22; C = 1,57 and D = 1,34. Keywords : Calcium, Freshwater Prawn, Macrobranchium rosenbergii, Moulting Abstrak. Cangkang kepiting bakau merupakan salah satu limbah perikanan yang dapat dimanfaatkan sebagai sumber kalsium karena cangkang kepiting mengandung kalsium karbonat tinggi. Pemanfaatan tepung cangkang kepiting pada pakan adalah sebagai suplemen. Tujuan dari penelitian ini untuk mengetahui pengaruh penambahan mineral kalsium dari cangkang kepiting bakau pada pakan untuk meningkatkan laju pertumbuhan, kelangsungan hidup dan frekuensi molting udang galah. Penelitian ini dilakukan selama 70 hari di laboratorium perikanan, Universitas Abulyatama. Hasil dari penelitian menunjukkan bahwa penambahan 2 % kalsium pada pakan memberikan hasil tertinggi untuk laju pertumbuhan, kelangsungan hiidup dan frekuensi molting udang galah dibanding perlakuan lain. Nilai rata-rata pertumbuhan udang galah tiap perlakuan adalah sebagai A (0% CaO) = 1,20 gr, B (1% CaO) = 1.41 gr, C (2% CaO) = 1.92 gr dan D (3% CaO) = 1,77 gr. Sedangkang nilai rata-rata kelangsungan hidup udang galah adalah A = 75 %, B = 91,1 %, C =91,1 % dan D = 89 %. Nilai ata-rata frekuensi molting udang galah selama pemeliharaan pada tiap perlakuan adalah A = 1,06 kali/ekor, B = 1,22 kali/ekor, C = 1,57 kali/ekor dan D = 1,34 kali/ekor. Kata kunci: Kalsium, Macrobranchium rosenbergii, Moulting, Udang Galah
Nile tilapia is a freshwater fish that is widely cultivated in Indonesia. During its development, tilapia aquaculture has constraints such as low growth rates. Therefore, it is necessary to add a feed additive to the feed in the form of charcoal. Charcoal is an adsorbent that has high absorption so that the addition of charcoal in the feed can increase the absorption of nutrients of tilapia. A 45-days trial was conducted to determine the percentage of addition of triggerfish bone charcoal (Abalistes stellaris) as a feed supplement that affect the growth performance and intestines of tilapia. The research design was a non-factorial Completely Randomized Design (CRD) with 4 treatments and 2 replications as treatments including: treatment A (control), B (addition of 1%charcoal), C (addition of 2% charcoal) and D (addition of 3% charcoal). A total of 240 tilapia fingerlings (5-7 cm) were used and placed in 8 aquariums then filled with 72 liters of water. Providing adlibitum (unlimited) feed with a frequency of 2 times a day. The ANOVA test showed that the addition of triggerfish bone charcoal (A. stellaris) in the feed was not significantly different (P 0.05) in weight growth, absolute length and daily length growth but it was significantly different (P 0.05) in feed conversion ratio and the efficiency of feed utilization. Based on result, it was concluded that the addition of 3% charcoal was the best treatment which gave the lengthiest of villi which was increasing the length of the intestinal villi to 71.11 µm from the initial length of 162.22 µm. easel at 233.33 μm, showed the highest feed conversion ratio value and feed efficiency (1.12 %, 89.6%).Keywords:CharcoalFish boneIntestinal histologyStarry triggerfish
The majority of people work as fishermen and their geographical location on the coast make Gampong Alue Naga produce quite a lot of fishery waste, especially oyster shells. Its use will have many good impacts on people's lives because in addition to reducing waste that interferes with the environment, the use of oyster shells can also reduce costs for animal feed and provide additional income for families. The target of this activity is fishermen housewives who generally also work as oyster seekers, so that they have no trouble finding raw materials and the waste they produce can be used immediately. The results of this activity are considered very satisfactory because the participants of the activity can understand the process of processing oyster shells, understand the use of the grit flour produced and directly utilize the grit flour product as animal feed.
Abstrak: Ikan Nila (Oreochromis niloticus) termasuk hewan pemakan segala (Omnivora), karena ikan tersebut memakan pakan hewani dan nabati yang cenderung hewan pemakan tumbuh-tumbuhan (herbivora). Indigofera sp sebagai kelompok tanaman kacang-kacangan berpotensi dimanfaatkan sebagai bahan pakan ikan nila. Indigofera sp. merupakan tanaman leguminosa yang memiliki nilai nutrisi tinggi. Dibalik tingginya nilai nutrisi, Indigofera sp. tidak terlepas dari tingginya serat kasar yang dapat mempengaruhi daya cerna bagi ikan nila (Oreochromis niloticus) sehingga fermentasi menggunakan baccilus sp dengan lama waktu berbeda diharapkan dapat memaksimalkan nutrisi serta menurunkan serat kasar Indigofera sp. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan daun Indigofera hasil fermentasi bakteri baccilus sp. dengan lama waktu yang berbeda dalam formula pakan terhadap kelangsungan hidup dan pertumbuhan dan lama waktu fermentasi terbaik, serta untuk mengetahui nilai konversi dan efisiensi pakan benih ikan nila. Hasil penelitian ini menunjukkan fermentasi terbaik yaitu fermentasi 48 jam yang mana SR: 53.33 ± 5,77%, PBM: 1,85 ± 0,43gr, PPM: 0,80 ± 0,37 cm, SGR: 1,29 ± 0,06%, FCR: 3,33 ± 0,53 gr dan EPP: 12,77 ± 3,07%. Kata kunci: Ikan nila, Indigofera sp., fermentasi, baccilus sp., energi pakan, kelangsungan hidup, pertumbuhan
Tilapia (Oreochromis niloticus) is one type of freshwater fish that is much in demand by the community because it has a high nutritional content so that many fish farmers cultivate these fish. Water quality is one of the factors that influence the enlargement of tilapia, therefore the use of combined filters (biological and chemical) in the recirculation system can be used as a solution. The purpose of this study was to determine the best growth of tilapia that was kept using a combined filter in the recirculation system. This study uses a comparison test as the treatment is treatment A; combined filter in the recirculation system, B; without recirculation. The parameters observed were survival rate, absolute weight growth, length growth and specific growth rate. The results showed that the use of combined filters in the recirculation system showed a significant effect on survival and not significantly different from absolute growth, length growth and specific growth rate. Treatment A is the best treatment with a survival rate of 100%, absolute weight growth of 3.44 grams, growth length of 5.73 cm and specific growth rate of 2.78%.
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