Survival and growth of Pangasianodon hypophthalmus cultured under controlled photoperiod

Changing in photoperiod duration may affects the physiology of nocturnal fish such as Pangasianodon hypophthalmus. A study aims to understand the effects of controlled photoperiod towards survival and growth of P. hypophthalmus has been conducted from June to August 2020. There were 3 treatments applied, namely natural photoperiod, 18 hours dark (18D), and 24 hours dark (24D) with 3 replications in each treatment. The rearing tanks used in this study were 100 L circular plastic tanks. In 24D treatment, the tanks were placed under dark colored tarp tent continuously. For the 18D treatment, the tanks were placed under dark tarp tent, but the tent was opened for 6 hours/ day (the tanks were in dark condition for 18 hours/ day), while the control tanks were positioned under natural photoperiod. P. hypophthalmus fingerlings, 6-8 cm TL and 4-5 g BW were used in this study. Thirty fishes were reared in each rearing tank, they were feed with commercial pellets, 2 times/day, at satiation. Fish survival was monitored every day, while samplings for fish growth were conducted weekly for a 8 weeks period. Results indicate that the survival of fish was 100% in each treatment applied. Fish growth, however, shown differences. The growth of fish reared in 24D and 18D was better than that of the control. By the 9th week, the fish in 24D was around 70.71g BW with 19.27 cm TL (daily growth rate 9.35%), while those of the 18D was 69.41 g BW, 18.77 cm TL and 9.29% daily growth rate. The fish reared under natural photoperiod was around 61.95 g BW with 18.19 cm TL and 7.33% of daily growth rate. Data obtained indicate that the application of longer dark is positively improve the growth of P. hypophthalmus.Keywords:Nocturnal FishLight Dark Catfish

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PENGARUH PENAMBAHAN SERBUK DAUN KAYU MANIS (Cinnamomum burmanii) PADA PAKAN TERHADAP KELANGSUNGAN HIDUP DAN PERTUMBUHAN IKAN NILA (Oreochromis niloticus)

Jurnal Perikanan Pantura (JPP) ◽

10.30587/jpp.v1i1.292 ◽

2018 ◽

Vol 1 (1) ◽

pp. 32

Author(s):

Moh. Fikri Ubaidillah ◽

Farikhah Farikhah ◽

Firma Fika Rahmawati

Keyword(s):

Growth Rate ◽

Oreochromis Niloticus ◽

Daily Growth Rate ◽

Daily Growth ◽

Absolute Weight ◽

Random Design ◽

Dose Control ◽

Leaf Powder ◽

Survival And Growth

The use of phytopharmaca is not well known to all tilapia farmers, especially in Gresik Regencywhich is partly cultivation of Oreochromis niloticus tilapia fish.Demand for tilapia in the marketis quite high as the number of restaurants that make tilapia as one of the menu.Cinnamomumburmanii, cinnamon leaf powder is dried and crushed and easy enough to make it effectivelycheaper than chemicals that are expensive enough to improve the survival and growth oftilapia.This study aims to determine the best dosage of the addition of Cinnamomum burmanii,cinnamon leaf powder.The method used was complete random design (CRD) with treatment ofdose of cinnamon leaf dose (control), 0.25%, 0.5%, 1%/kg of feed per treatment consisted of 3replications.Parameters observed for survival, absolute weight and daily growth rate. The resultsof this study showed that the best dosage of cinnamon leaf powder had a significant effect onsurvival, absolute weight and daily growth rate of tilapia.The best dosage is the addition ofcinnamon leaf powder for survival, absolute weight and daily growth rate at a dose of 0.25%/kgof feed.

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Effect of Alkalinity on Survival Rate and Growth of Siam Patin Catfish (Pangasius sp.) fry

Jurnal Akuakultur Indonesia ◽

10.19027/jai.4.53-56 ◽

2007 ◽

Vol 4 (1) ◽

pp. 53

Author(s):

D. Djokosetiyanto ◽

R.K. Dongoran ◽

E. Supriyono

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Fish Larvae ◽

Daily Growth Rate ◽

Daily Growth ◽

Survival And Growth

This study was conducted to examine the effect of alkalinity on survival and growth of Siam patin catfish (Pangasius sp.). Fish larvae were reared in aquaria in density of 4 fishes per liter. Water alkalinity examined was 15 ppm CaCO3 as control, and 25, 50, and 75 ppm CaCO3 as treatments. During first 7 days, larvae were fed on nauplii Artemia sp. 4 times daily and continuing fed on Tubifex sp. for 23 days. The results of study showed that higher survival rate was obtained in treatment 50 ppm CaCO3 (94.16%). Higher daily growth rate was also achieved by that treatment. Keywords: Siam patin catfish, Pangasius, Alkalinity, CaCO3 ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh alkalinitas terhadap kelangsungan hidup dan pertumbuhan larva ikan patin Siam (Pangasius sp.). Larva ikan patin dipelihara dalam akuarium dengan kepadatan 4 ekor/L. Alkalinitas air yang digunakan adalah 15 ppm CaCO3 sebagai kontrol, dan perlakuan 25, 50 serta 75 ppm CaCO3. Selama 7 hari pertama, pakan yang diberikan berupa naupli Artemia sp. setiap 4 jam sekali dan diteruskan dengan cacing sutera (Tubifex sp.) selama 23 hari. Hasil penelitian menunjukkan bahwa kelangsungan hidup larva tertinggi diperoleh pada perlakuan alkalinitas 50 ppm CaCO3 (94,16%). Laju pertumbuhan harian tertinggi juga diperoleh pada perlakuan alkalinitas 50 ppm CaCO3 (6,65%). Kata kunci: ikan patin Siam, Pangasius, Alkalinitas dan CaCO3

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PEMELIHARAAN LARVA ABALON Haliotis squamata DENGAN PEMBERIAN JENIS PAKAN BERBEDA DALAM BENTUK TEPUNG

Jurnal Riset Akuakultur ◽

10.15578/jra.13.1.2018.39-46 ◽

2018 ◽

Vol 13 (1) ◽

pp. 39

Author(s):

Fitriyah Husnul Khotimah ◽

Gusti Ngurah Permana ◽

Ibnu Rusdi ◽

Bambang Susanto

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Seed Production ◽

Shell Length ◽

Sea Water ◽

Feed Solution ◽

Larval Rearing ◽

Daily Growth Rate ◽

Daily Growth ◽

Survival And Growth

Masalah utama yang umum terjadi pada produksi benih abalon adalah kematian yang tinggi (> 90%) setelah abalon menempel pada plate pemeliharaan. Penggunaan pakan dalam bentuk tepung untuk mengganti diatom sebagai pakan postlarva beberapa spesies ikan, udang, dan abalon sudah dilakukan. Penelitian ini bertujuan untuk mendapatkan jenis pakan dalam bentuk tepung yang sesuai dan efektif untuk mendukung sintasan dan pertumbuhan larva abalon Haliotis squamata. Percobaan terdiri atas lima perlakuan pakan pada pemeliharaan larva abalon yaitu tepung Spirulina sp., Ulva sp., Chaetoceros sp., Gracilaria sp., dan diatom (kontrol). Masing-masing perlakuan terdiri atas empat ulangan. Pakan berupa tepung yang digunakan pada masing-masing perlakuan, terlebih dahulu dicampur merata dengan larutan tepung agar (7,5 mg/mL dalam air laut; suhu 40°C) dengan konsentrasi tepung 40 mg/mL larutan agar. Pemberian pakan dilakukan setiap tiga hari dengan cara menyemprotkan larutan pakan pada permukaan plate pemeliharaan larva. Penelitian dilakukan selama 30 hari. Hasil penelitian menunjukkan bahwa sintasan larva abalon yang diberi pakan tepung Spirulina sp. paling tinggi dan berbeda nyata (P<0,05) dengan yang diberi diatom, tepung Chaetoceros sp., dan Ulva sp., yaitu masing-masing 81,49%; 79,25%; 76,57%; dan 76,46%; tetapi tidak berbeda nyata dengan yang diberi pakan tepung Gracilaria sp. 81,37% (P>0,05). Laju pertumbuhan harian panjang cangkang larva abalon tertinggi diperoleh pada larva yang diberi pakan tepung Gracilaria sp. (203,81 ± 1,23 µm/hari) dan Spirulina sp. (205,59 ± 1,71 µm/hari). Nilai laju pertumbuhan harian panjang cangkang larva abalon yang paling rendah dijumpai pada larva yang diberi pakan tepung Ulva sp. (146,07 ± 1,73 µm/hari).The most common problem in abalone seed production is the high mortality occurrence (> 90%) after postlarvae settlement to the rearing plates. The use of microparticle diets to replace the natural feed of postlarval has been performed on various species of fish, shrimp, and abalone. This research aims to determine the most effective and suitable powder-based feed to support the survival and growth of abalone Haliotis squamata larvae. The experiments consisted of five feed treatments, i.e., Spirulina sp., Ulva sp., Chaetoceros sp., and Gracilaria sp. Flour, and diatoms (as control). Each treatment had four replicates. The powder-based feed used in each treatment was firstly mixed with a solution of agar powder (7.5 mg/mL sea water, 40°C) with a concentration of 40 mg of flour/mL of agar solution. Feeding was done every three days by spraying the feed solution onto the surface of the larval rearing plate. The study was conducted for 30 days. The results showed that survival rate of abalone larvae fed with Spirulina sp. flour was the highest and significantly different (P<0.05) compared with those given diatoms, Chaetoceros sp. and Ulva sp. flours, which were 81.49%, 79.25%, 76.57%, and 76.46%, respectively, and not significantly different from those fed with Gracilaria sp. 81.37% (P>0.05). The highest daily growth rate of the shell length of abalone larvae was achieved by larvae fed with Gracilaria sp. (203.81 ± 1.23 ¼m/day) and Spirulina sp. flours (205.47 ± 1.71 µm/day). The lowest daily growth rate of shell length was found on abalone larvae fed with Ulva sp. flour (146.07 ± 1.73 µm/day).

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The Use of Various Proportions of Rough Fish on Giant Trevally (Caranx sp.) Culture in the Floating Net Cages, Pangandaran, West Java

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2019/v5i330079 ◽

2020 ◽

pp. 1-7

Author(s):

Rita Rostika ◽

Muhamad Ihsan Fauzan ◽

Walim Lili ◽

Iskandar .

Keyword(s):

Growth Rate ◽

Feed Efficiency ◽

Daily Growth Rate ◽

Daily Growth ◽

Randomized Design ◽

Completely Randomized Design ◽

C 50 ◽

Net Cages ◽

Fish Survival ◽

Range Test

This research aims to determine the effect of providing rough fish and pellets with optimal dosages on the Giant Trevally culture to produce the highest growth in Pangandaran floating net cages. This research was conducted in August 2019 to September 2019 with 60 days fish rearing. The method used in this study was a Completely Randomized Design (CRD) with five treatments and three replications. The treatments were A (0% rough fish and 100% pellets), B (25% rough fish and 75% pellets), C (50% rough fish and 50% pellets), D (75% rough fish and 25% pellets) and E (100% rough fish and 0% pellets). The effect of each treatment was tested by analysis of variance (ANOVA) F test at an interval of 5%; if there were significant differences then followed by Duncan's multiple range test. The parameters observed in this study included fish survival (SR), Daily Growth Rate (LPH), Feed Efficiency (EPP) and water quality at the study site. The results obtained from this study were the provision of rough fish in Giant Trevally was able to increase the Daily Growth Rate (LPH) and the Efficiency of Feeding (EPP) for Giant Trevally. The highest growth value in this study was in treatment E (with 100% rough fish and 0% pellets) with LPH of 3.01%, total weight of 109.47gr and EPP of 30.60%.

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TOWARDS THE QUESTION OF SPECIALIZED FEEDS FOR TENCHES (TINCA TINCA)

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES FISHING INDUSTRY ◽

10.24143/2073-5529-2017-3-89-97 ◽

2017 ◽

pp. 89-97

Author(s):

Elena Mikhaylovna Chervonenko ◽

Lina Yurievna Lagutkina

Keyword(s):

Growth Rate ◽

Fish Growth ◽

Animal Origin ◽

State Technical ◽

Tinca Tinca ◽

Daily Growth ◽

Volga River ◽

The Moment ◽

First Time ◽

Technical Centre

The article describes the process of tench growing (male and female species removed from set gear in the Volga river in the Astrakhan region) using experimental feedstuff "T", taking into account the fact that problems with artificial growing tench ( Тinca tinca ) appear first in the process of feeding when wild sires change to artificial food. The research took place on the base of the department of aquaculture and water bioresources of Astrakhan State Technical University in innovation centre "Bioaquapark - scientific and technical centre of aquaculture" in 2015. Special feed including components of animal origin - mosquito grab and sludge worm as an effective substitute to fish flour, as well as components of vegetable origin (carrot, parsley, pumpkin, wheatgrass) for domestication of tenches are offered for the first time. Food technology has been described. The exact composition of the formula, which is being licensed at the moment, is not disclosed. Feed "T", which has undergone biological analysis and is in accordance with organoleptic and physical standards was used for feeding tench female and male species during domestication period (60 days), along with food "Coppens" (Holland). Feed efficiency was determined according to survival and daily fish growth. Growth rate of females appeared more intensive than growth rate of males fed with experimental food "T". Daily growth changed depending on the types of food: from 0.3 ("Coppens") to 0.47 (experimental food) in females, from 0.25 ("Coppens") to 0.39 (experimental food) with males. Ability to survive among tench species fed with "Coppens" and experimental food made 60% and 100%, correspondingly. Nutricion of tench species with experimental food encouraged their domestication, which allowed using tench species in further fish breeding process in order to get offspring. The project was supported by the Innovation Promotion Fund in terms of the project "Development and implementation of the technique for the steady development of aquaculture: food "TechSA".

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SUBSTITUSI FERMENTASI BUNGKIL KELAPA SAWIT DALAM PAKAN BUATAN TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP BENIH IKAN GURAMI (OSPHRONEMUS GOURAMY)

Jurnal Ruaya Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan ◽

10.29406/rya.v4i1.686 ◽

2016 ◽

Vol 4 (1) ◽

Author(s):

Farida . ◽

Eka Indah Raharjo ◽

Arnis Maylinda Sari

Keyword(s):

Growth Rate ◽

Palm Oil ◽

Palm Kernel ◽

Specific Weight ◽

Feed Conversion ◽

Daily Growth Rate ◽

Daily Growth ◽

Average Growth ◽

Fermentation Residue ◽

Average Average

ABSTRAKPenelitian bertujuan untuk mengetahui penggunaan fermentasi bungkil kelapa sawit dalam pakan buatan.Penelitian menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 4 perlakuan 3 ulangan.Susunan perlakuan adalah Perlakuan A : bungkil kelapa sawit 12%, Perlakuan B : fermentasi bungkil kelapa sawit 15%, Perlakuan C : fermentasi bungkil kelapa sawit 18%, Perlakuan D : fermentasi bungkil kelapa sawit 21%. Penelitian ini dilakukan selama 60 hari untuk mengetahui laju pertumbuhan spesifikberat, laju pertumbuhan harianpanjang, konversi pakan, kelangsungan hidup dan kualitas air sebagai penunjang.Hasil penelitian menunjukkan pemberian pakan buatan dengan fermentasi bungkil kelapa sawit menghasilkan respon yang baik terhadap pertumbuhan ikan gurami. Pemberian pakan buatan dengan fermentasi bungkil kelapa sawit 18% (perlakuan C), memberikan hasil terbaik dengan laju pertumbuhan dengan rata – rata laju pertumbuhan spesifik berat 1.502%, laju pertumbuhan harian panjang 4.06%, nilai konversi pakan rata – rata 3.48 dan kelangsungan hidup rata – rata 90%.Kata Kunci : Fermentasi Bungkil Kelapa Sawit, Ikan Gurami, Laju PertumbuhanThe study aims to determine the use of fermentation residue oil palm in artificial feed .Research using a completely randomized design ( CRD ), which consists of 4 treatment three replications.The composition of the treatment is the treatment A : 12 % of palm oil cake , Treatment B : fermented palm oil cake 15 % , Treatment C : fermented palm oil cake 18 % , Treatment D : fermentation residue palm oil 21 %.This research was conducted for 60 days to determine the specific growth rate of heavy , long daily growth rate , feed conversion , survival and quality of water as a supporter.The results showed the artificial feeding with fermented palm cake to produce a good response to the growth of carp.Feeding artificially by fermentation cake palm oil 18 % ( treatment C ) , gives the best results with a growth rate with the average - average growth rate of the specific weight of 1.502 % daily growth rate long- 4:06 % , the value of feed conversion average - average 3:48 and median survival - average of 90 % .Keywords : Fermentation Palm Kernel Oil, Fish carp, Growth Rate

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Public Compliance With Social Distancing Measures and SARS-CoV-2 Spread

Public Health Reports ◽

10.1177/00333549211011254 ◽

2021 ◽

pp. 003335492110112

Author(s):

Hongjie Liu ◽

Chang Chen ◽

Raul Cruz-Cano ◽

Jennifer L. Guida ◽

Minha Lee

Keyword(s):

Growth Rate ◽

Reproduction Number ◽

Early Stage ◽

Human Mobility ◽

The United States ◽

Density Change ◽

Regression Coefficients ◽

Daily Growth Rate ◽

Daily Growth ◽

Social Distancing

Objective We quantified the association between public compliance with social distancing measures and the spread of SARS-CoV-2 during the first wave of the epidemic (March–May 2020) in 5 states that accounted for half of the total number of COVID-19 cases in the United States. Methods We used data on mobility and number of COVID-19 cases to longitudinally estimate associations between public compliance, as measured by human mobility, and the daily reproduction number and daily growth rate during the first wave of the COVID-19 epidemic in California, Illinois, Massachusetts, New Jersey, and New York. Results The 5 states mandated social distancing directives during March 19-24, 2020, and public compliance with mandates started to decrease in mid-April 2020. As of May 31, 2020, the daily reproduction number decreased from 2.41-5.21 to 0.72-1.19, and the daily growth rate decreased from 0.22-0.77 to –0.04 to 0.05 in the 5 states. The level of public compliance, as measured by the social distancing index (SDI) and daily encounter-density change, was high at the early stage of implementation but decreased in the 5 states. The SDI was negatively associated with the daily reproduction number (regression coefficients range, –0.04 to –0.01) and the daily growth rate (from –0.009 to –0.01). The daily encounter-density change was positively associated with the daily reproduction number (regression coefficients range, 0.24 to 1.02) and the daily growth rate (from 0.05 to 0.26). Conclusions Social distancing is an effective strategy to reduce the incidence of COVID-19 and illustrates the role of public compliance with social distancing measures to achieve public health benefits.

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A 23.7-year long daily growth rate record of a modern giant clam shell from South China Sea and its potential in high-resolution paleoclimate reconstruction

Palaeogeography Palaeoclimatology Palaeoecology ◽

10.1016/j.palaeo.2021.110682 ◽

2021 ◽

Vol 583 ◽

pp. 110682

Author(s):

Nanyu Zhao ◽

Hong Yan ◽

Yuanjian Yang ◽

Chengcheng Liu ◽

Xiaolin Ma ◽

...

Keyword(s):

Growth Rate ◽

High Resolution ◽

South China Sea ◽

South China ◽

Giant Clam ◽

Daily Growth Rate ◽

Daily Growth ◽

Paleoclimate Reconstruction ◽

Clam Shell ◽

China Sea

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Pengaruh Nitrat (NO3) Terhadap Pertumbuhan Alami Eceng Gondok (Eichornia crassipes Solms.) Berdasarkan Biomassa Basah Di Danau Batur, Kintamani, Bali

Journal of Marine and Aquatic Sciences ◽

10.24843/jmas.2017.v3.i02.215-222 ◽

2017 ◽

Vol 3 (2) ◽

pp. 215

Author(s):

Lisa Rosalia Prayuda ◽

I Wayan Arthana ◽

Ayu Putu Wiweka Krisna Dewi

Keyword(s):

Growth Rate ◽

Water Hyacinth ◽

High Fertility ◽

Natural Growth ◽

Initial Weight ◽

Daily Growth Rate ◽

Daily Growth ◽

Natural Lakes ◽

High Fertility Rate ◽

Eichornia Crassipes

Batur Lake is one of the natural lakes in the province of Bali where the activity of fishing, agriculture, tourism and housing available. This study aims to determine the effect of nitrate relation to the natural growth of the water hyacinth (Eichornia crassipes). Increased water hyacinth biomass in Songan station is the highest among the three other stations (Batur, Buahan, and Trunyan). At the end of the study (day 42 ), water hyacinth biomass of Songan station increased by 338.2 % from the initial weight, while at another station the increase weight ranges from 75 % -158 %. The highest daily growth rate in Trunyan station 3.68% / day, and the lowest in station Buahan which only reached 0.88% / day. At the Songan station where are many floating net which contribute to increase nitrate. There is a tendency of growth of water hyacinth faster at higher nitrate conditions. Nitrate conditions ranged from 0,35 to 0,62 m /l which shows that the waters of Batur Lake classified into waters that have a high fertility rate (eutrophic).

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UTILIZATION OF MARINE FUNGAL Nodulisporium sp. KT29 METABOLITES TO IMPROVE THE PRODUCTION PERFORMANCE OF MARINE CULTURE OF WHITE SHRIMP

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i2.15839 ◽

2017 ◽

Vol 8 (2) ◽

pp. 747

Author(s):

Fazril Saputra ◽

Dinamella Wahjuningrum ◽

Kustiariyah Tarman ◽

Irzal Effendi

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Production Performance ◽

White Shrimp ◽

Feed Conversion ◽

Daily Growth Rate ◽

Daily Growth ◽

Marine Culture

This study aimed to determine the best dose of administration of marine fungal Nodulisporium sp. KT29 metabolites to improve the production performance of marine culture of white shrimp. The experimental animals used were white shrimp Litopenaeus vannamei post larvae 12, which were reared in the sea using floating net cages with a stocking density of 700 post larvae/net. Experimental design used was a completely randomized design consisting of 3 treatments with 3 replications; control without the administration of Nodulisporium sp. KT29 metabolites, dietary of feed containing Nodulisporium sp. KT29 metabolites at doses of 20 mL/kg of feed and 40 mL/kg of feed. The results showed that survival rate, absolute length growth, weight gain, daily growth rate and feed conversion ratio in treatment groups were better than the control (P<0.05). The administration of marine fungal Nodulisporium sp. KT29 metabolites at a dose of 20 mL/kg of feed could improve the production performance of white shrimp cultivated in the sea with survival rate, daily growth rate and feed conversion ratio: 66.61±6.94%, 20.18±0.39 %/day and 3.20±0.22, respectively.

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