Effects of low fishmeal diets on the growth performance and physiological condition of ayu Plecoglossus altivelis

2016 ◽  
Vol 82 (5) ◽  
pp. 819-826
Author(s):  
Takeshi Yamamoto ◽  
Nobuhiro Suzuki ◽  
Hirofumi Furuita ◽  
Shunji Amano ◽  
Hiromi Oku ◽  
...  
Keyword(s):  
Growth Performance ◽  
Physiological Condition ◽  
Plecoglossus Altivelis

scholarly journals The effect of temperature on the physiological condition and growth performance of freshwater eel elver Anguilla bicolor bicolor McClelland, 1844

2018 ◽  
Vol 17 (2) ◽  
pp. 181
Author(s):  
Latifa Fekri ◽  
Ridwan Affandi ◽  
Muhammad Fajar Rahardjo ◽  
Tatag Budiardi ◽  
Charles Parningotan Haratua Simanjuntak ◽  
...  
Keyword(s):  
Growth Performance ◽  
Physiological Condition ◽  
Effect Of Temperature ◽  
Aquatic Animal ◽  
Metabolism Rate ◽  
Randomized Design ◽  
Freshwater Eel ◽  
Survival And Growth ◽  
Physiology Laboratory ◽  
Different Levels

<p align="center"><strong>ABSTRACT</strong></p><p align="center"> </p><p>This study aimed to analyze the effect of water temperature on the physiological condition and growth performance of freshwater eel elver<em> Anguilla bicolor bicolor </em>(McClelland, 1844). This study was conducted in March 2017 at the Physiology Laboratory of Aquatic Animal, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University. The study used a completely randomized design with five different levels of temperature (22<sup>°</sup>C, 24<sup>°</sup>C, 26<sup>°</sup>C, 28<sup>°</sup>C, and 30<sup>°</sup>C) as treatments with two replications. The size of elver was 2‒3 g. Fish were fed with 1 mm pellet containing 45% of protein. The feeding level was 7 % of fish biomass and the feeding frequency was two times a day. The results showed that temperatures range from 24‒30<sup>°</sup>C could be used for freshwater eel elver rearing and 28‒30<sup>°</sup>Cwere the best temperatures to support survival and growth performance of eel elver. A temperature of 24<sup>°</sup>C was the best temperature that could reduce the metabolism rate and did not cause stress on the elver.</p><p> </p><p>Keywords: elver, physiological conditions, growth performance, metabolism, temperature</p><p> </p><p> </p><p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p>Penelitian dengan tujuan menganalisis pengaruh suhu terhadap kondisi fisiologis dan kinerja pertumbuhan <em>elver</em> ikan sidat (<em>Anguilla bicolor bicolor</em> McClelland, 1844) telah dilakukan pada bulan Maret 2017 di Laboratorium Fisiologi Hewan Air FPIK IPB. Penelitian menggunakan rancangan acak lengkap dengan lima perlakuan suhu berbeda (22<sup>°</sup>C, 24<sup>°</sup>C, 26<sup>°</sup>C, 28<sup>°</sup>C, dan 30<sup>°</sup>C) dengan masing-masing dua ulangan. Ukuran benih yang digunakan 2‒3 g. Pakan yang diberikan berupa pellet berukuran 1 mm dengan kadar protein 45%. Jumlah pakan yang diberikan (FR) adalah 7% dari biomassa ikan dan diberikan dua kali sehari. Hasil penelitian menunjukkan bahwa kisaran suhu 24‒30<sup>°</sup>C dapat digunakan dalam pemeliharaan <em>elver</em> ikan sidat, dan suhu 28‒30<sup>°</sup>C merupakan suhu yang sangat baik untuk mendukung kelangsungan hidup dan pertumbuhan <em>elver</em> ikan sidat. Suhu media 24<sup>°</sup>C adalah suhu terbaik yang dapat menekan laju metabolisme dengan tidak menyebabkan stres pada <em>elver </em>ikan sidat.</p><p> </p><p>Kata kunci: <em>elver</em>, kondisi fisiologis, kinerja pertumbuhan, metabolisme, suhu</p><p> </p><p> </p>

Growth performance and physiological condition of F1 amago salmon Oncorhynchus masou ishikawae juveniles obtained from broodstock with selective breeding for growth on a low fish-meal diet

2014 ◽  
Vol 80 (3) ◽  
pp. 569-579 ◽  
Author(s):  
Takeshi Yamamoto ◽  
Hiroyuki Okamoto ◽  
Hirofumi Furuita ◽  
Koji Murashita ◽  
Hiroyuki Matsunari ◽  
...  
Keyword(s):  
Growth Performance ◽  
Selective Breeding ◽  
Physiological Condition ◽  
Fish Meal ◽  
Oncorhynchus Masou ◽  
Amago Salmon

Isolation of purple non-sulfur bacteria from the digestive tract of ayu (Plecoglossus altivelis)

2022 ◽  
Author(s):  
Aoi Koga ◽  
Takumi Yamasaki ◽  
Shuhei Hayashi ◽  
Shinjiro Yamamoto ◽  
Hitoshi Miyasaka
Keyword(s):  
Phylogenetic Tree ◽  
Growth Performance ◽  
Digestive Tract ◽  
Intestinal Tract ◽  
Soil Samples ◽  
Plecoglossus Altivelis ◽  
Sulfur Bacteria ◽  
Nacl Concentration ◽  
Kuma River ◽  
Suitable Environment

Abstract Purple non-sulfur bacteria (PNSB) reportedly have probiotic effects in fish, but whether they are indigenous in the digestive tract of fish is a question that requires answering. We attempted to isolate PNSB from the digestive tract of ayu (Plecoglossus altivelis) from the Kuma River (Kumamoto, Japan), and successfully isolated 12 PNSB strains. All the isolated PNSB belonged to the genus Rhodopseudomonas. Five Rhodopseudomonas strains were also isolated from the soil samples collected along the Kuma River. The phylogenetic tree based on the partial sequence of pufLM gene indicated that the PNSB from ayu and soil were similar. The effects of NaCl concentration in growth medium on growth were also compared between the PNSB from ayu and soil. The PNSB from ayu showed a better growth performance at a higher NaCl concentration, suggesting that the intestinal tract of ayu, a euryhaline fish, might provide suitable environment for halophilic microorganisms.

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