11 research outputs found
PENGARUH PENAMBAHAN KALSIUM PADA MEDIA TERHADAP SIKLUS MOLTING DAN PERTUMBUHAN BIOMASSA UDANG GALAH, Macrobrachium rosenbergii (de Man)
Get PDFPenelitian ini dilakukan untuk mengkaji pengaruh penambahan kalsium ke dalam media dalam proses peningkatan kadar kalsium kulit dan konsumsi pakan, serta konsekuensinya bagi pertumbuhan udang. Penelitian tahap 1 dengan perlakuan dosis penambahan Ca(OH)2 sebanyak 0 mg/L, 15 mg/L, 30 mg/L, 45 mg/L, dan 60 mg/L, dengan 3 ulangan. Penelitian tahap 2 dengan perlakuan penambahan kalsium 0 mg/L, 30 mg/L, dan 60 mg/L. Parameter yang diukur meliputi kadar kalsium kulit, tingkat konsumsi pakan, laju pertumbuhan, dan efisiensi pemanfaatan pakan. Penambahan Ca(OH)2 sebanyak 15-60 mg/L meningkatkan kadar kalsium media (25,51-35,22 mg/L) dibanding dengan kontrol (18,53 mg/L). Hasil penelitian menunjukkan bahwa penggunaan kalsium Ca(OH)2 sebanyak 30 mg/L mampu mempercepat laju peningkatan kadar kalsium kulit. Laju peningkatan kadar kalsium kulit yang lebih cepat berimplikasi terhadap peningkatan konsumsi pakan dan berkonsekuensi lanjut bagi peningkatan pertumbuhan udang. Aplikasi penggunaan kalsium Ca(OH)2 sebanyak 15-30 mg/L untuk mempercepat proses ganti kulit udang berimplikasi terhadap pertumbuhan udang. Konsumsi pakan harian, mulai meningkat pada penambahan Ca(OH)2 15 mg/L, dan tertinggi pada perlakuan penambahan Ca(OH)2 sebanyak 45 mg/L. Laju pertumbuhan biomassa pada media yang ditambah Ca(OH)2 sebanyak 30 dan 60 mg/L memberikan pengaruh yang nyata (P<0,05). Efisiensi tingkat konsumsi pakan perlakuan penambahan Ca(OH)2 sebanyak 30 mg/L lebih tinggi dibanding perlakuan penambahan Ca(OH)2 sebanyak 0 dan 60 mg/L.This research was aimed to study the effect of calcium addition into culture media in order to increase husk calcium and food consumption and its consequences to prawn growth. Research phase 1 consisted of treatments of Ca(OH)2 addition i.e. 0 mg/L, 15 mg/L, 30 mg/L, 45 mg/L, and 60 mg/L, with 3 replications for all treatments. Research phase 2 consisted of treatments of calcium addition of 0 mg/L, 30 mg/L, and 60 mg/L. The measured parameters were the rate of husk calcium, feed consumption rate, growth rate, and feed conversion ratio. The Ca (OH)2 addition was 15-60 mg/L to increase calcium concentration in the media (25.51-35.22 mg/L) compared to the control (18.53 mg/L). Result of the research indicated that the usage of calcium Ca(OH)2 of 30 mg/L can accelerate the calsium deposition in prawn husk. Acceleration of calsium deposition has direct implication to the increase of FCR and thus it increases prawn growth rate. Application of calcium Ca(OH)2 addition of 15-30 mg/L to accelerate molting process has positive effect on the growth rate of prawn. Daily food consumption rate started to increase with the addition of 15 mg/L of Ca(OH)2, and the highest was reached at the concentration of 45 mg/L Ca(OH)2. Growth rate of prawn biomass in culture media added with 30 and 60 mg/L of Ca(OH)2 were significantly different (P<0.05). Better food consumption efficiency levels were achieved by the treatment of Ca(OH)2 addition of 30 mg/L compared to the other treatments
PENGARUH PENAMBAHAN PROBIOTIK, KARBON TERHADAP KUALITAS AIR, VOLUME FLOK DAN PERTUMBUHAN PADA BUDIDAYA LELE DUMBO (CLARIAS GARIEPINUS)
No full textTujuan penelitian adalah untuk mengetahui pengaruh penambahan probiotik, karbon terhadap kualitas air, volume flok dan kinerja produksi pada budidaya lele dumbo. Rancangan acak lengkap dengan tiga perlakuan yaitu kontrol (TA), penambahan probiotik (TAB) dan penambahan probiotik dan molase (SB). Hasil penelitian menunjukkan bahwa kadar Oksigen terlarut, Suhu, TOM, TAN dan Nitrit tidak berbeda nyata antar perlakuan (P > 0.05), namun demikian kadar TOM dan TAN cenderung meningkat dengan nilai tertinggi pada SB diikuti TAB dan terendah pada TA. pH air pada SB lebih rendah dan berbeda nyata dibanding TA dan TAB (P 0,05). Walaupun demikian kelangsungan hidup cukup tinggi antara 86,08 – 91,70%,  laju pertumbuhan cukup baik minimal 4,33%/hari. Kesimpulan dari penelitian ini penambahan probiotik berpengaruh terhadap populasi bakteri, volume flok tetapi tidak berpengaruh terhadap kualitas air , penambahan berat, laju pertumbuhan, kelangsungan hidup dan konversi pakan. Kelangsungan hidup dan laju pertumbuhan lele cukup baik pada kadar bahan organik dan amonia yang sangat tinggi
Pengaruh Pemberian Pakan Protein Rendah Terhadap Kualitas Air, Profil Darah Dan Performa Produksi Ikan Patin (Pangasianodon hypophthalmus)
Get PDFPenggunaan pakan mandiri pada budidaya ikan patin dapat menurunkan biaya produksi. Kandungan protein pakan mandiri antara 18 - 22%, berakibat sisa pakan cukup tinggi dapat mencemari lingkungan budidaya. Kajian tentang pemberian pakan protein rendah yang dapat menyebabkan pencemaran lingkungan masih sangat terbatas. Tujuan penelitian adalah untuk mengevaluasi pengaruh pakan protein rendah terhadap kualitas air, profil darah dan performa produksi ikan patin. Rancangan acak dengan tiga perlakuan pakan protein 16%, 23%, dan 30% masing-masing perlakuan tiga ulangan. Benih patin dengan bobot 50 g dan dibudidayakan selama 60 hari sebanyak 20 ekor/koma dengan volume air 1,8 m3.. Parameter yang diukur meliputi Suhu, pH, Oksigen terlarut, TOM, TDS, TSS, total amonia, nitrit, nitrat, total fosfat, eritrosit, leukosit, hemoglobin, hematokrit, kelimpahan fitoplankton, laju pertumbuhan, pertambahan bobot badan, kelangsungan hidup dan konversi pakan. Hasil penelitian menunjukkan bahwa kadar amonia dan kelimpahan fitoplankton tertinggi pada pakan protein 30% dibandingkan dengan pakan protein 16% dan 23%. Kadar eritrosit, leukosit, hemoglobin dan hematokrit tidak berbeda nyata pada ketiga perlakuan. Tingkat pertumbuhan dan pertambahan berat badan yang lebih tinggi dan konversi pakan terendah pada pakan protein 30%. Berdasarkan data hasil penelitian disimpulkan bahwa pemberian pakan protein sekitar 20% tidak menyebabkan pencemaran media budidaya, dengan demikian pakan mandiri dapat digunakan dalam budidaya patin
EFFECTS OF FEED REDUCTION ON GROWTH PERFORMANCE, WATER QUALITY, AND HEMATOLOGY STATUS OF AFRICAN CATFISH, Clarias gariepinus REARED IN BIOFLOC POND SYSTEM
Get PDFBiofloc technique is a method of fish culture using minimal water exchange and microbial aggregates formed within the culture media as fish supplementary feed. Biofloc as a protein source is currently not being considered part of the feeding dosage in catfish culture. This present work aimed to determine the effects of commercial feed reduction on growth performance, water quality, and hematology of catfish cultured in biofloc ponds. Fish with an average body weight of 7.53 ± 0.47 g were stocked in nine ponds with a stocking density of 100 fish/pond and reared for nine weeks. The experiment was arranged in a completely randomized design, with the following treatments: full feed + non-biofloc (C100) as control; 10% less feed + biofloc (B90); 20% less feed + biofloc (B80). As such, the total feed doses given daily per each treatment fish biomass were: 5% for C100, 4.5% for B90, and 4.0% for B80. Each treatment was arranged in triplicates. The results showed that all water quality parameters (dissolved oxygen, pH, TAN, and nitrite) and biofloc concentrations did not differ significantly among the treatments (P>0.05). Specific growth rate, survival rate, weight gain, and feed conversion ratio of the fish were also not significantly different (P>0.05). The weight gain of biofloc-treated fish in B90 and B80 reached 2.71% and 12.65%, respectively; which were higher than the control treatment during the treatment period. The feed conversion ratios of B90 and B80 were 14.39% and 7.58%, respectively; lower than the control treatment. The biofloc treatment did not adversely alter the fish’s blood cell profiles. This study revealed that feed reduction did not affect water quality in the ponds and blood cell profiles of the fish. Moreover, fish in the biofloc-treated ponds had higher weight gain and lower food conversion ratios compared to fish cultured in the non-treated biofloc ponds. This study suggests that using the biofloc system in catfish rearing can reduce the use of feed up to 10%-20% with similar biomass yield compared to the non-biofloc system
DIETARY PROTEIN REQUIREMENT OF DAPHNIA MAGNA FOR THE IMPROVEMENT POPULATION AND NUTRITIONAL VALUE OF DAPHNIA
Get PDFDaphnia magna is one of the live feeds used in aquaculture, but its availability is still limited. The population and nutritional quality of D. magna culture depend on the nutritional quality of feed where the feed source is commonly used from agricultural by-products. In contrast, pelleted feed as a source of nutrition in D. magna culture is still limited. Evaluation of commercial pelleted feeds with different protein levels and dietary protein requirements of D. magna is the focus of this research. Three treatments with different protein levels of feed with protein levels of 17.83% (P20), 32.35% (P30) and 41.98% (P40) and rice bran as control at a protein level of 8.2% (P10) with five replications for 28 days of rearing with using a completely randomized design. The average weekly population and the highest total biomass of D. magna were obtained from D. magna fed the P30 (Protein 32.35%) of 7,575 ind. tank-1. week-1 and total biomass of 290.26 g.m-3 with the feed conversion ratio of 3.85 ± 0.75 and protein efficiency ratio of 0.83 ± 0.14. The highest protein value of D. magna was obtained from D. magna fed the P30 of 3.02% ± 0.20 wet weight. The results showed that feed with a protein content of 32.35% (P30) showed the best results for cultivating D. magna. The estimated dietary protein requirement of feed for D. magna cultivation using the second polynomial regression analysis of feed protein - population and biomass is 38.8%
The effects of feeding rate on water quality, Biofloc Consumption and growth performance of African catfish (Clarias gariepinus) reared under a biofloc system
No full textBiofloc provide two services, treating wastes from feeding and providing nutrtion from biofloc consumption. Information of biofloc nutrtion were very rare. . The present study aimed to analyze the effects of feeding rate on water quality and growth performance of African catfish reared under a biofloc system. The experiment a completely randomized design, which 4 treatments, namely biofloc with 5% feeding rate (B5), biofloc with 4% feeding rate (B4), biofloc with 3% feeding rate (B3), and non-biofloc with 5% feeding rate (N5) as a control. All treatments were triplicated. The results showed that dissolved oxygen and nitrite levels between groups differed significantly, but this did not occur for total ammonia nitrogen (TAN), Temperature and pH. Biofloc consumption B5, B4, B3 were higher than N5. Compared to N5, specific growth rate, final weight, and weight gain were significantly different and higher in B5, different and lower in B3, but not significantly different in B4. Feed convertion ratio (FCR) in B5 and B4 have lower than N5. Based on the results, the feeding rate in a biofloc system is concluded to be reduced by 20% compared to non-biofloc.</p
THE EFFECT OF MOON PHASES ON CRAB (Portunus pelagicus) CATCHES IN MUNDU DISTRICT, CIREBON REGENCY, WEST JAVA
Get PDFCrab is a marine commodity with a relatively expensive price, but the catch is often uncertain. Crab like crustaceans in general are positively phototactic, which naturally in the sea the activity of crabs at night is influenced by the moon phase. This study aims to determine the effect of the moon phase on the catch of fishermen in Mundu District, Cirebon Regency, West Java. The study used the Completely Randomized Design (CRD) method with 4 treatments, namely the time of capture on the 5th, 15th, 21st and 29th of Hijriah, crab catch data were collected from 5 fishing boats in each treatment/moon phase. The same boat was used in each moon phase. In addition, a study was conducted on the effect of fishing costs on catches. The results showed that the crab catch on the 15th of Hijriah (full moon) was the highest at 9.6 kg, followed by the 5th of Hijriah 8.6 kg, the 30th of Hijriah 6.8 and the lowest catch on the 21st of Hijriah 6.6 kg. The results of the regression analysis show that the variable of fishing costs does not have a significant effect on crab catches. The results of this study can be used by fishermen in planning crab catching activities.Crab is a marine commodity with a relatively expensive price, but the catch is often uncertain. Crab like crustaceans in general are positively phototactic, which naturally in the sea the activity of crabs at night is influenced by the moon phase. This study aims to determine the effect of the moon phase on the catch of fishermen in Mundu District, Cirebon Regency, West Java. The study used the Completely Randomized Design (CRD) method with 4 treatments, namely the time of capture on the 5th, 15th, 21st and 29th of Hijriah, crab catch data were collected from 5 fishing boats in each treatment/moon phase. The same boat was used in each moon phase. In addition, a study was conducted on the effect of fishing costs on catches. The results showed that the crab catch on the 15th of Hijriah (full moon) was the highest at 9.6 kg, followed by the 5th of Hijriah 8.6 kg, the 30th of Hijriah 6.8 and the lowest catch on the 21st of Hijriah 6.6 kg. The results of the regression analysis show that the variable of fishing costs does not have a significant effect on crab catches. The results of this study can be used by fishermen in planning crab catching activities
COMPARISON OF PRODUCTION PERFORMANCE OF STRIPED CATFISH LARVAE (Pangasianodon hypophthalmus) FED WITH LIVE AND FROZEN DAPHNIA
No full textDaphnia magna as a live feed in the maintenance of striped catfish larvae in the form of frozen feed is still limited. Evaluation of the production performance of striped catfish larvae using live feed D. magna in both live and frozen compared with feeding Tubifex became the objective of this research activity. The experimental design used feed treatment with Tubifex (P1) as a control, live D. magna (P2), and frozen D. magna (P3) with four experimental replications for 15 days of rearing using a completely randomized design. Twelve aquariums with a water volume of 150 L were used in the experiment. Striped catfish larvae (1.5 cm TL), as many as 9 fish/L were stocked in each aerated aquarium. The amount of feed given was 15% of the weight of fish biomass with a frequency of 4 times a day and increased every day by 10% from the total feed of the first day. Results of the experiment showed different feeding significantly affected absolute length growth, total biomass, and feed conversion, with the best treatment being Tubifex (P1) with values of 0.6 ± 0.02 cm, 83.93 ± 5.99 g, and 1.31, respectively. The best growth rate of weight and length were obtained on larvae fed Tubifex (P1). The best protein efficiency and retention ratio resulted from frozen D. magna feed (P3) treatment of 12.45 and 7.11%, respectively. Live and frozen D. magna was not significantly different, so frozen D. magna feed can be used as an alternative natural feed with a high level of availability
PENERAPAN NANOBUBBLE DAN ARANG PADA PENGANGKUTAN BENUR (Litopenaeus vannamei) TERHADAP KUALITAS AIR
Get PDFTeknologi nanobubble dapat digunakan pada kegiatan budidaya udang vaname dengan kepadatan tinggi. Pengangkutan selama 48 jam, oksigen terlarut perlakuan oksigen murni 9,99-11,39 mg/L, perlakuan nanobubble 20,71-22,65 mg/L. Salinitas tidak berubah dan masih dalam kondisi rentang layak bagi kehidupan benur. Salinitas pada akhir pengangkutan dengan teknologi nanobubble 32o/oo, perlakuan oksigen murni 32,7-33,3o/oo. Suhu air relatif tidak berubah dan masih dalam rentang layak bagi kehidupan benur, suhu 29,13-29,33°C. pH akhir media pengangkutan teknologi nanobubble yakni 7,15-7,66 dan perlakuan oksigen murni 6,97-7,41. Kandungan karbondioksida perlakuan oksigen murni terjadi kenaikan sebesar 13,05-16,51 mg/L, perlakuan nanobubble sebesar 10,78-11,31 mg/L. TAN relatif sama untuk semua perlakuan dengan konsentrasi 5,49 – 5,69 mg/L. Amonia perlakuan oksigen murni sebesar 0,03 sampai 0,09 mg/L, perlakuan nanobubble 0,05-0,15 mg/L. Nitrit perlakuan oksigen murni 0,02-0,05 mg/L. Nitrat konsentrasi nitrat terjadi kenaikan 11,07 sampai 13,97 mg/L
The Effect of Hyperthermia on the Immune Response of Vannamei Shrimp Infected with IMNV
Get PDFThe purpose of this study was to determine the effect of hyperthermia on the immune response of shrimp infected by IMNV. Vannamei shrimp were challenged with IMNV and reared at temperatures 30ºC (Sk30), 31ºC (S31), 32ºC (S32) and 33ºC (S33) repectively. The temperature of shrimp without IMNV infection was 300C as control. During the study, shrimp immune response measurements were Total Hemocyte Count (THC), Differential Hemocyte Count (DHC), Respiratory Burst (RB) activity and Phenoloksidase (PO) activity. Generally, the results showed that the response of shrimp decreased along with hyperthermic condition. Shrimp infected with IMNV, decreased immune response especially at temperatures of 32ºC and 33ºC
