scholarly journals INDUKSI HORMONAL MATURASI GONAD IKAN GABUS (Channa striata)

2017 ◽  
Vol 12 (1) ◽  
pp. 9 ◽  
Author(s):  
Muhammad Hunaina Fariduddin Ath-thar ◽  
Rudhy Gustiano ◽  
Irin Iriana Kusmini ◽  
Vitas Atmadi Prakoso ◽  
Fera Permata Putri
Keyword(s):  
Growth Performance ◽  
Market Potential ◽  
Ex Situ ◽  
Gonad Maturation ◽  
Oocyte Diameter ◽  
Female Ratio ◽  
Natural Spawning ◽  
Aromatase Inhibitor Treatment ◽  
Serum Gonadotropin ◽  
Channa Striata

Ikan gabus (Channa striata) merupakan ikan lokal air tawar potensial untuk pengembangan budidaya di Indonesia. Sebagian besar produksi ikan gabus berasal dari tangkapan di alam yang menyebabkan menurunnya populasi ikan gabus. Domestikasi merupakan salah satu solusi dari masalah ini. Dewasa ini, ikan gabus telah dapat dipijahkan baik secara alami maupun buatan. Namun demikian produksi benih yang dihasilkan masih bergantung pada kondisi lingkungan. Tujuan penelitian adalah mendapatkan dosis oodev yang optimal untuk pematangan gonad ikan gabus, pemijahan alami, dan analisis performa pertumbuhan keturunan pertama. Jumlah larva yang dihasilkan dari pemijahan alami ikan gabus pada lingkungan ex situ adalah 1.250-5.000 ekor per induk. Berdasarkan pertambahan diameter dan fase kematangan telur, induksi hormon dengan dosis 1,5 mL/kg menunjukkan hasil terbaik dibandingkan perlakuan lain (perlakuan dosis 0,5 dan 1 mL/kg). Benih ikan gabus hasil pemijahan alami di luar habitat menunjukkan populasi Bogor memberikan performa pertumbuhan mutlak bobot (1,7 ± 0,06 g); laju pertumbuhan spesifik (2,6% ± 0,10%); dan sintasan (86,43% ± 1,32%) lebih baik dibandingkan benih ikan gabus populasi Palembang.Striped snakehead (Channa striata) is a market potential of local fish in Indonesia. Up to now (to date), the majority of production comes from natural catches. This condition, if continues, can lead to the decline in natural stock. Domestication offers a promising solution to help solve this problem. So far, natural spawning for seed production has been done succcesfully. However, continuity of fish supply is still very much dependent on environmental factors. The present study aimed to investigate the optimal hormone dosage for inducing gonad maturation, natural spawning and to analyze growth performance of fry resulted from natural spawning. Striped snakehead broodstock from Palembang and Bogor were induced with three dosages of oodev (consisted of Pregnant Mare’s Serum Gonadotropin and Aromatase Inhibitor) treatment for gonad maturation (0.5 mL/kg; 1 mL/kg and 1.5 mL/kg) with three replications. The reproductive parameters as oocyte diameter and development were measured. Striped snakehead were spawned naturally with male and female ratio of 1:1. Growth performance of seed were analyzed for 40 days of rearing. The result showed that oodev enabled to speed up gonad maturation process. Broodstock induced with 1.5 mL/kg oodev showed the biggest egg diameter and was significantly different from other treatments (P<0.05). Fry count resulted from natural spawning ranged from 1,250 to 5,000/broodstock. The broodstock from Bogor produced higher total weight gain (1.7±0.06 g) and better specific growth rate (2.6%±0.10%) than that of Palembang as well as survival rate (86.43%±1.32%).

Reproductive cycle of the Manila clam (Ruditapes philippinarum): an intensively harvested invasive species in the Tagus Estuary (Portugal)

2017 ◽  
Vol 98 (7) ◽  
pp. 1645-1657 ◽  
Author(s):  
Paula Moura ◽  
Paulo Vasconcelos ◽  
Fábio Pereira ◽  
Paula Chainho ◽  
José Lino Costa ◽  
...  
Keyword(s):  
Invasive Species ◽  
Reproductive Cycle ◽  
Sexual Maturity ◽  
Ruditapes Philippinarum ◽  
Manila Clam ◽  
Tagus Estuary ◽  
Gonad Maturation ◽  
Oocyte Diameter ◽  
Ruditapes Decussatus ◽  
Spawning Period

The present study aimed to describe the reproductive cycle and estimate the size at sexual maturity of the Manila clam (Ruditapes philippinarum) in the Tagus Estuary (Portugal). Specimens were collected monthly from September 2013 to December 2015 during fishing surveys using bivalve dredges. The gametogenic cycle was described in detail using gonad histology and monitored throughout the study period by the monthly variation in the frequency of gonad maturation stages, mean gonadal index and mean oocyte diameter. This invasive population of R. philippinarum displayed synchronous gonadal development between sexes, with ripening occurring mainly in April and May followed by an extensive spawning period until November–December. Individuals reached the size at first sexual maturity at 29.4 mm in shell length (i.e. before 1 year old). Furthermore, the reproductive strategy, dynamics and potential were compared between the invasive R. philippinarum and the native congeneric carpet shell clam (Ruditapes decussatus). Overall, the data gathered in this study constitutes valuable baseline information to propose conservation strategies and implement management measures to minimize the harmful impacts caused by this invasive species on local ecosystems and native biodiversity, particularly over populations of autochthonous bivalves.

scholarly journals Interaction of dietary protein and energy-protein ratio on growth performance of snakehead Channa striata

2018 ◽  
Vol 18 (1) ◽  
pp. 70-79
Author(s):  
Hani Wijianti ◽  
Muhammad Agus Suprayudi ◽  
Nur Bambang Priyo Utomo ◽  
Dedi Jusadi
Keyword(s):  
Growth Performance ◽  
Protein Content ◽  
Dietary Protein ◽  
High Energy ◽  
Average Weight ◽  
Protein Ratio ◽  
Dietary Level ◽  
Randomized Design ◽  
Excellent Growth ◽  
Channa Striata

ABSTRACTThe study proposed to discover the optimum protein content and energy-protein ratio in practical diet for snakehead, Channa striata. The experiment applied complete randomized design, consisted of six treatments with four replications on each treatment. The treatments were: A (32.5%; 11.82 kcal GE/g), B (32.5%; 13.32 kcal GE/g), C (37.17%; 10.64 kcal GE/g), D (37.33%; 12.07 kcal GE/g), E (43.08%; 10.02 kcal GE/g), and F (42.88%; 10.66 kcal GE/g). Snakehead with average weight of 6.21 ± 0.03 g were reared for 8 weeks. The treatments showed significant results. Increased protein dietary level had increased the growth rate and treatment with high energy-protein ratio at the same protein dietary level provided better growth performance. However, increased energy-protein ratio at E and F treatments caused a decline in growth performance. The improvement of energy-protein dietary ratio had positive correlation with the level of lipid and protein content in fish body. Similar finding was found in liver and muscle glycogen. The results also showed that the increament of energy-protein dietary ratio was significantly and positively correlated with cholesterol, triglyceride, HDL, glucose, and albumin, yet it had no significant effect on LDL. It can be concluded that excellent growth performance was achieved by protein dietary level of 37.33% and energy-protein ratio of 12.07 kcal GE/g.Keywords: energy-protein ratio, growth, snakehead ABSTRAKPenelitian ini bertujuan untuk memperoleh kadar protein dan rasio energi-protein pakan buatan yang optimum bagi performa pertumbuhan ikan gabus. Penelitian ini mengaplikasikan rancangan acak lengkap dengan 6 perlakuan, yaitu: A (32,78%;11,82  kkal GE/g), B (32,56%;13,32 kkal GE/g), C (37,17%:10,64 kkal GE/g), D (37,33%:12,07 kkal GE/g), E (43,08%:10,02 kkal GE/g), dan F (42,88%:10,66 kkal GE/g) dan masing-masing terdiri 4 ulangan. Bobot rata-rata ikan gabus yang digunakan dalam penelitian ini yaitu 6,21 ± 0,03 g dan dipelihara selama 8 minggu. Hasil penelitian menunjukkan bahwa peningkatan kadar protein pakan meningkatkan laju pertumbuhan, dan perlakuan dengan rasio energi-protein tinggi pada level protein pakan yang sama memberikan kinerja pertumbuhan yang lebih baik. Namun demikian, pada perlakuan E dan F, peningkatan rasio energi-protein menyebabkan penurunan kinerja pertumbuhan. Peningkatan rasio energi-protein pakan berkorelasi positif terhadap kadar lemak dan protein tubuh ikan. Hal yang sama juga terjadi pada glikogen hati dan otot. Hasil penelitian juga menunjukkan bahwa peningkatan rasio energi-protein pakan berpengaruh nyata (P<0,05) dan  berkorelasi positif terhadap kolesterol, trigliserida, HDL, dan albumin, tetapi tidak berpengaruh nyata terhadap LDL  (P>0.05). Kesimpulan yang didapat adalah kinerja pertumbuhan optimal dihasilkan oleh kadar protein pakan 37,33% dan rasio energi protein pakan 12,07 kkal GE/g.Kata kunci: albumin, energi, ikan gabus, pertumbuhan, protein 

scholarly journals Effects of Aquatic Plants on Nutrient Concentration in Water and Growth Performance of Fantail Goldfish in an Aquaculture System

2021 ◽  
Vol 13 (20) ◽  
pp. 11236
Author(s):  
Mohd Naqib Azfar Mohd Roslan ◽  
Abentin Estim ◽  
Balu Alagar Venmathi Maran ◽  
Saleem Mustafa
Keyword(s):  
Body Weight ◽  
Dissolved Oxygen ◽  
Growth Performance ◽  
Aquatic Plants ◽  
Ex Situ ◽  
Nitrifying Bacteria ◽  
Nutrient Concentrations ◽  
Goldfish Carassius Auratus ◽  
Wet Weight ◽  
Nitrite Nitrate

The effects of two aquatic plants, duckweed (Lemna sp.) and azolla (Azolla sp.), on the growth performance of fantail goldfish (Carassius auratus) and dissolved nutrient concentrations were studied. The experiments were carried out in triplicate sets over a period of seven weeks. Eight specimens of fantail goldfish (length = 5.16 ± 0.06 cm; body weight = 2.30 ± 0.06 g) were released into each of the aquariums containing 40 L of water. Submerged sponge filters were used as the substrate (bed) for the nitrifying bacteria to facilitate nitrification. The fish were provided feed at the rate of 2% of their body weight twice daily. In situ and ex situ water parameters (temperature, dissolved oxygen, pH, total suspended solids, ammonia, nitrite, nitrate, and phosphate), body weight and length of the Fantail goldfish, and wet weight of aquatic plants were measured weekly. The results showed no significant differences (p > 0.05) in any of the three aquariums in water temperature, pH, and dissolved oxygen. Survival of the fish was 100%. The highest food conversion ratio and specific growth rate were observed in the aquarium stocked with duckweed, followed by the aquarium with azolla and the control set (p < 0.05). The concentrations of nutrients (ammonia and nitrate) were recorded lowest (p < 0.05) in the aquarium with azolla, followed by duckweed and the control. The results suggested that aquatic plants were effective in absorbing nutrients and can serve as biofilters to create better conditions for the growth of the fantail goldfish.

scholarly journals PERFORMANCE OF GONAD MATURATION AND SPAWNED OF GROUPER BROODSTOCK CROSS BREEDING BETWEEN F-2 AND F-0

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Tri Djoko ◽  
Haryanti Haryanti ◽  
Sari Budi Moria ◽  
A Muzaki ◽  
I K Wardana
Keyword(s):  
Research And Development ◽  
Female Parent ◽  
Gonadal Development ◽  
Male Parent ◽  
Gonad Maturation ◽  
Cross Breeding ◽  
Natural Spawning ◽  
Production Success ◽  
Genetic Characters ◽  
Very High

<p>In fish grouper escpecially humpback grouper culture, seed and broodstock quality and availability determine the production success. Main supply of wild broodstock still dominates grouper hatchery activities, therefore, the exploitation of the wild broodstock is very high. Efforts to use the supply of cultured broodstock through selection and breeding processes will greatly determine their culture success. The purpose of this experiment was to get seeds from the cross breeding between F-2 and F-0. The research used two (2) concrete tanks with volume of 75 m<sup>3</sup> each. Each tank was filled with 20  fishes consisting of 10 fishes of F-2 and 10 fishes of F-0. The experiment was conducted the Institute of Mariculture Research and Development, Gondol, Bali. The result showed a good gonadal development and natural spawning of cross breeding between F-2 and F-0. Total number of eggs (1.320.000) was found the highest in May in tank A, while the highest fertilized eggs of 385.000 were found in June.  The SSCP analyses showed no difference in genetic characters of broodstock from cross-breeding between the female parent F-2 and F-0 male parent.</p> <p>Keywords: Humpback Grouper, gonad, spawned, cross breeding, larvae</p>

scholarly journals Dietary Prebiotics and Probiotics Influence the Growth Performance, Feed Utilisation, and Body Indices of Snakehead (Channa striata) Fingerlings

2016 ◽  
Vol 27 (2) ◽  
pp. 111-125 ◽  
Author(s):  
Mohammad Bodrul Munir ◽  
◽  
Roshada Hashim ◽  
Mohammad Suhaimee Abdul Manaf ◽  
Siti Azizah Mohd Nor ◽  
...  
Keyword(s):  
Growth Performance ◽  
Feed Utilisation ◽  
Channa Striata
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