Influence of Sustained Exercise at Two Ration Levels on Growth and Thyroid Function of All-Female Chinook Salmon (Oncorhynchus tshawytscha) in Seawater

1994 ◽  
Vol 51 (9) ◽  
pp. 1975-1984 ◽  
Author(s):  
A. Kiessling ◽  
D. A. Higgs ◽  
B. S. Dosanjh ◽  
J. G. Eales
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Chinook Salmon ◽  
Feed Efficiency ◽  
Oncorhynchus Tshawytscha ◽  
Specific Growth ◽  
Fork Length ◽  
Hepatosomatic Index ◽  
Rate Condition ◽  
Body Protein

Duplicate groups of seawater-adapted 70-g all-female chinook salmon (Oncorhynchus tshawytscha) were held in flowing seawater (24–29‰; 8–12 °C) corresponding to swimming speeds (SS) of 0.5, 1.0, or 1.5 body lengths (bl)/s for 212 d. Fish were fed either a maximum satiating ration of 75% of maximum ration at each SS. Fish grew four- to fivefold during the study, but neither mean body weight, fork length, specific growth rate, condition factor, nor muscle morphometry was influenced by average SS. However, the SS of individually marked fish were negatively correlated with specific growth rate. At both rations, higher SS increased the internal tissue-carcass ratio, hepatosomatic index, and total body protein. More food was ingested at higher SS resulting in reduced feed efficiency. SS did not alter the plasma L-thyroxine (T4) concentration, but increased the plasma 3,5,3′-triiodo-L-thyronine (T3) concentration and T3/T4 ratio. In part, this may reflect the greater food intake at higher SS. The reduced ration depressed all aspects of growth and at 212 d tended to depress both plasma T4 and T3, but did not alter feed efficiency. We conclude that exercise over the range of 0.5–1.5 bl/s does not enhance growth, but reduces feed efficiency in seawater-adapted chinook salmon.

Inhibition of smolting in precocious male chinook salmon, Oncorhynchus tshawytscha

1991 ◽  
Vol 69 (7) ◽  
pp. 1848-1852 ◽  
Author(s):  
Chris J. Foote ◽  
W. C. Clarke ◽  
J. Blackburn
Keyword(s):  
Growth Rate ◽  
British Columbia ◽  
Specific Growth Rate ◽  
Body Length ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Specific Growth ◽  
Early Spring ◽  
Growth Patterns ◽  
Precocious Males

The ontogeny of precocious maturation in chinook salmon from Nicola River, British Columbia, was examined in conjunction with the effects of such maturation on smoltification and growth. A high proportion (56%) of male parr matured as yearlings. The growth patterns of precocious males and nonmaturing individuals of both sexes differed significantly. Precocious males appeared to grow rapidly relative to nonmaturing individuals in the early spring, but thereafter displayed a decreasing specific growth rate. In addition, precocious individuals gained more weight per increment of body length than nonmaturing individuals. The seawater adaptability of precocious individuals was lower than that of nonmaturing individuals at the three monthly sampling periods and decreased steadily as maturation proceeded.

scholarly journals Survival and growth responses of snakehead fish Channa striata Bloch. juvenile in aerated and unaerated acid sulfate water

2017 ◽  
Vol 16 (1) ◽  
pp. 60
Author(s):  
, Purnamawati ◽  
Daniel Djokosetiyanto ◽  
Kukuh Nirmala ◽  
Enang Harris ◽  
Ridwan Affandi
Keyword(s):  
Growth Rate ◽  
Blood Glucose ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Stocking Density ◽  
Water Volume ◽  
Growth Responses ◽  
Acid Sulfate ◽  
Channa Striata

<p><strong>ABSTRACT </strong></p><p> </p><p>The aim of the research was to analyze survival rate, specific growth rate, albumin, and feed efficiency and physiological (blood glucose, cortisol, dan haemoglobin) responses of snake head fish juvenil that reared at aerated and unaerated of tidal land water have been conducted in the laboratory. Experiments using completely randomized design with aerated and unaerated as a treatment, and each treatment has twelve replications. The snakehead fish juvenil wich length 2.4±0.2 cm and weight of 0.21±0.05 g reared in the aquarium that are size 30×25×35 cm (water volume 25 L) with a stocking density 2 juvenile/L, for 40 days. The fishes were fed with commercial feed with protein content about 40%, feeding two times a day (morning and afternoon) were at satiation. Replacement of water done every two days about 10% of the total water volume in the aquarium. The results showed that unaerated median significantly affected to biometric and physiological response of juvenile of snake head fish. The media un-aerated gives the best results shown by the higher value of survival (92%), specific growth rate (6.73%/ day), feed efficiency (78.22%), protein retention (41.91%), energy retention (30.81%) value of albumin (6.60 g/100 mL) and the haemoglobin (5.58 g/dL), and have the lowest value of cortisol (21.49 ng/L) and blood glucose (43.36 mg/100 mL).</p><p> </p><p>Keywords: acid sulfate water, growth rate, aeration, <em>Channa striata </em></p><p><em> </em></p><p> </p><p><strong>ABSTRAK </strong></p><p> </p><p>Penelitian ini bertujuan untuk menganalisis respons kelangsungan hidup, pertumbuhan spesifik, albumin, dan efisiensi pakan dan fisiologis (kortisol, glukosa darah, dan hemoglobin) juvenil ikan gabus yang dipelihara dengan dan tanpa aerasi pada media air rawa pasang surut. Penelitian menggunakan rancangan acak lengkap dengan aerasi dan tanpa aerasi sebagai perlakuan, dan masing-masing perlakuan memiliki 12 ulangan. Juvenil ikan gabus berukuran panjang 2,4±0,3 cm dan bobot 0,21±0,03 g dipelihara dalam akuarium 30×25×35 cm (volume 25 L) dengan padat tebar 2 ekor/L, selama 40 hari. Ikan diberi pakan berupa pakan komersial dengan kadar protein ±40%, pemberian pakan dua kali sehari (pagi dan sore) <em>at satiation</em>. Penggantian air dan penyiponan dilakukan dua hari sekali sebanyak 10% dari volume total dalam akuarium. Hasil penelitian menunjukkan bahwa perlakuan tanpa aerasi berpengaruh nyata terhadap respons biometrik dan fisiologis juvenil ikan gabus. Media tanpa aerasi memberikan hasil yang lebih baik ditunjukkan oleh kelangsungan hidup (92%), laju pertumbuhan spesifik (6,73%/ hari), efisiensi pakan (78,22%), retensi protein (41,91%), retensi energi (30,81%), kadar albumin (6,60 g/100 mL), dan hemoglobin (5,85 g/dL) yang lebih tinggi, sedangkan kadar kortisol (219 ng/L) dan glukosa darah (43,36 mg/100 mL) yang terendah.</p><p> </p><p>Kata kunci: media sulfat masam, pertumbuhan, aerasi, <em>Channa striata</em></p>

Influence of Size, Growth Rate, and Photoperiod on Cyclic Changes in Gill (Na + K)–ATPase Activity in Chinook Salmon (Oncorhynchus tshawytscha)

1980 ◽  
Vol 37 (4) ◽  
pp. 600-605 ◽  
Author(s):  
R. D. Ewing ◽  
H. J. Pribble ◽  
S. L. Johnson ◽  
C. A. Fustish ◽  
J. Diamond ◽  
...  
Keyword(s):  
Growth Rate ◽  
Atpase Activity ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Fork Length ◽  
Artificial Lighting ◽  
Small Peak ◽  
Size Growth ◽  
Growth Change ◽  
Cyclic Changes

Juvenile spring chinook salmon (Oncorhynchus tshawytscha) (Rogue River stock) were reared in constant 8 °C well water under artificial lighting with photoperiods adjusted to Medford, Oregon. Juveniles were divided into six groups according to the amount of food provided. Growth (change in fork length per day) was linear from July through December for all six groups. Three distinct patterns of gill (Na + K)–ATPase activity were observed in these groups. In the two groups fed the largest rations, a peak in activity in October was observed with a smaller peak in July. Fish fed the smallest rations showed no increase in gill (Na + K)–ATPase activity throughout the year. At intermediate rations, there was a small peak in July but no peak in October. A growth rate of less than 0.027 cm/d appeared to suppress the October peak in gill (Na + K)–ATPase activity. Fish with higher growth rates showed peaks in activity in either October or NovemberKey words: chinook salmon, (Na + K)–ATPase, growth, photoperiod, Oncorhynchus tshawytscha

scholarly journals Pakan diameter berbeda bagi pertumbuhan benih sidat (Anguilla sp)

2015 ◽  
Vol 3 (3) ◽  
Author(s):  
Dairi Y.L Airin ◽  
Cyska Lumenta
Keyword(s):  
Growth Rate ◽  
Experimental Design ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Growth Efficiency ◽  
Daily Consumption ◽  
Relative Growth ◽  
Randomized Design ◽  
Powder Diameter

The objective of research was to establish the effect of different powder diameter on growth, efficiency value and daily consumption of eel seed. This research was conducted at the Laboratory of Aquaculture Technology, Faculty of Fisheries and Marine Sciences Sam Ratulangi University. Experimental design used was Complete  Randomized Design with four treatments, each with three replication.  Variables analysed consisted of relative growth, specific growth rate, feed efficiency value and daily comsumption.  Results showed that treatment A with poder diameter of 0.125 mm displayed the best relative growth (105.356%), Specific growth (1.29%), feed efficiency value (6,431%), and daily consumption (0.813%). AS conclusion, feed with diameter 0.125 mm was utilized effectively by eel seed.   Keywords: relative growth, specific growth rate, feed efficiency value. and daily comsumption, Anguilla sp

scholarly journals The Comparison of Water Spinach (Ipomoea aquatica) Density Using Aquaponic System Through Reduced Concentration of Ammonia (NH3), Nitrite (NO2), Nitrate (NO3) And Its Influence On Conversion Rate and Feed Efficiency To Increase The Survival Rate And Growth Rate of African Catfish (Clarias sp.) Intensive

2019 ◽  
Vol 8 (2) ◽  
pp. 113
Author(s):  
Prayogo Prayogo
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Nitrate Content ◽  
African Catfish ◽  
Water Spinach ◽  
Measurement Results

In intensive aquaculture farming activities will generate solid waste and liquid waste that comes from feces and leftover fish feed. The waste accumulation can lead to deterioration of water quality that affects the physiological processes, behavior, growth, and mortality of fish. Technological innovation is needed for the management of water quality and increase productivity as a result of shrinkage of cultivated land. One of the technological innovations that can be applied, namely the incorporation of fish farming with crops through Aquaponics system. This study aims to determine the effects of water spinach optimum density to absorb waste ammonia (NH3), nitrate (NO3) and nitrite (NO2) optimally to increase the survival rate and growth rate of african catfish (Clarias sp.) intensive As well as to see its effect on conversion rates and feed efficiency with aquaponics system. The method used is the experimental method. The experimental research is used to determine the effect of certain variable towards a group under controlled conditions. The results of measurements of ammonia levels during P0 showed that the treatment significantly different (p <0.05) with treatment P1; P2; and P3. P3 treatment with water spinach number 40 stems provide maximum results in lowering the concentration of ammonia compared with treatment P0 (without spinach), P1 (20 water spinach), and P2 (30 water spinach). The measurement results nitrite levels during the observation showed that all treatments there were no significant differences (p> 0.05). The measurement results also showed that the nitrate content whole of observation results showed that all treatments there were no significant differences (p> 0.05). The best feed conversion ratio was found in P3 treatment of 1.08. The best feed efficiency was found in P3 treatment 92,25%. The highest survival rate was found in P3 treatment (88.69%) in maintenance medium and lowest survival rate was in P0 treatment (26,71%) without water spinach  (control). The highest specific growth rate was found in P3 treatment (1.15%), while the lowest specific growth rate was in treatment P0 (0.79%).Results of water quality measurement supporting all treatments decreased and increased. The supporting water quality are temperature, pH, and dissolved oxygen. The decrease and increase in support water quality is caused by environmental factors such as weather. Other parameters were observed in addition to supporting the water quality is water spinach plant growth. Value growth water spinach is best found in treatment P3. In the treatment P3 water spinach growth rose 5.14 cm with an initial size of 10.92 into 16.06.

scholarly journals Feed efficiency with the addition of probiotics for asang fish fry, Osteochilus vittatus, CV

DEPIK ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 180-185
Author(s):  
Usman Bulanin ◽  
Yuneidi Basri ◽  
Sri Puja Lestari
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Growth And Survival ◽  
Randomized Design ◽  
Commercial Feed ◽  
Test Fish ◽  
The Mean ◽  
Completely Randomized Design

The purpose of this study was to determine the addition of probiotics in commercial feed to the growth and survival of Asang fish (Osteochilus vittatus CV) fry. This study used an experimental method with a completely randomized design (CRD) with 4 treatments and 3 replications. The test fish used were 120 fish with a size ranging from 5-8 cm. The test fish were kept in a waring cage made of a type of paralon frame with a size of 40 x 40 x 45 cm. The treatment in this study was A (without probiotics), treatment B (addition of probiotic 10 ml/kg of feed), treatment C (addition of probiotic 20 ml/kg of feed), and treatment D (addition of probiotics 30 ml/kg of feed). From the results of this study, the highest specific growth rate was found in treatment D (6.66 ± 1.15 g), while the mean survival was 100% for all treatments. The highest FCR of fish fry was found in treatment A namely 1.43 ± 0.22, and the lowest in treatment D namely 1.12 ± 0.21, and for feed efficiency in treatment D, namely 95.24 ± 1.04 %.Keywords:Asang fishEfficiencyGrowthSurvival

scholarly journals LAJU PERTUMBUHAN DAN EFISIENSI PAKAN IKAN NILA (Oreochromis niloticus) YANG DIPELIHARA DALAM KOLAM TERPAL YANG DIPUASAKAN SECARA PERIODIK

2018 ◽  
Vol 5 (1) ◽  
pp. 45-55
Author(s):  
Intan Permata Sari ◽  
Yulisman . ◽  
Muslim .
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Specific Weight ◽  
Feed Consumption ◽  
Weight Growth ◽  
Randomized Design

ABSTRACT    Starved was one effort that can reduce the feed consumption and feed residues without decreasing growth of cultured fish. The purpose of this research was to determine the effect of starved periodically to the specific growth rate and feed efficiency of tilapia reared in the pond. The research had been conducted in Laboratorium Budidaya Perairan, Faculty of Agriculture, Sriwijaya Unversity on April – Juni 2016. This research method used Completely Randomized Design with four treatments and three replications that was every day feed without starvation (P0), one day feed one day starvation (P1), two days feed one day starvation (P2) and three days feed one day starvation (P3). Parameters of this research are specific growth rate, feed efficiency, survival rate and water quality (temperature, pH, DO, ammonia). The result showed that starved periodically significantly effect to the growth rate and feed efficiency of cultured tilapia in the pond. Treatment P1 (one day feed one day starvation) gave highest specific weight growth rate and specific length growth rate which were 2.32%.day-1 and 1.27%.day-1 then feed efficiency was 84.46%. The highest survival rate occurred in treatment P1 (one day feed one day starvation) 82%. Water quality of this research were temperature 27.0-31.5 oC,  pH 6.8-7.9, dissolved  oxygen 4.53-7.23 mg.L-1, and ammonia 0.01-0.30 mg.L-1. Keywords : Feed Efficiency, Specific growth rate, Starved, , Tilapia.

scholarly journals PENGARUH SUBTITUSI LIMBAH PERUT IKAN TONGKOL (Euthynnus affinis) PADA PAKAN TERHADAP PERTUMBUHAN DAN EFISIENSI PAKAN IKAN NILA (Oreochromis niloticus)

2019 ◽  
Vol 2 (2) ◽  
pp. 43-49
Author(s):  
Agoeng Karyanto ◽  
Hadijah Hadijah ◽  
Erni Indrawati
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Analysis Of Variance ◽  
Oreochromis Niloticus ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Tuna Fish ◽  
Fish Intestine ◽  
Absolute Growth ◽  
Euthynnus Affinis

Penelitian ini bertujuan untuk mengetahui pengaruh substitusi limbah perut ikan Tongkol (Euthynnus affinis) terhadap per-tumbuhan, efisiensi pakan dan konsentrasi yang optimal dalam meningkatkan pertumbuhan ikan Nila (Oreochromis niloticus) dan mengacu pada pemanfaatan bahan baku limbah usus ikan tongkol sebagai bahan alternatif pengganti bahan baku tepung ikan yang mahal. Penelitian ini merupakan jenis penelitian kuantitatif, menggunakan metode eksperimental yang terdiri atas 4 per-lakuan yaitu P0 (Protein 27%), P1 (Protein 20%), P2 (Protein 25%), dan P3 (Protein 30%). Data dianalisis dengan menggunakan analysis of variance (ANOVA). Parameter uji dalam penelitian ini meliputi Laju Pertumbuhan Spesifik, Pertumbuhan Mutlak, dan Efisiensi Pakan. Hasil penelitian menunjukkan rata-rata laju pertumbuhan spesifik  benih ikan Nila (Oreochromis niloticus) berkisar antara 0.65-94%, pertumbuhan mutlak berkisar antara 2-3 gr, efisiensi pakan berkisar antara 4-5%, dan subtitusi tepung usus ikan tongkol (Euthynnus affinis) tidak berpengaruh nyata terhadap laju pertumbuhan spesifik (P>0,05), sedangkan per-tumbuhan mutlak dan efisiensi pakan berpengaruh nyata terhadap subtitusi tepung usus ikan Tongkol (Euthynnus affinis) (p<0,05). This study aims to determine the effect of substitution of Euthynnus affinis on growth, feed efficiency and optimal concentration in increasing the growth of tilapia (Oreochromis niloticus) and referring to the use of raw materials for tuna intestine waste as an alternative ingredient for the expensive fish flour starch. This study is quantitative research, using an experimental method consisting of 4 treatments, namely P0 (Protein 27%), P1 (Protein 20%), P2 (Protein 25%), and P3 (Protein 30%). Data were analyzed using analysis of variance (ANOVA). Test parameters in this study include Specific Growth Rate, Absolute Growth, and Feed Efficiency. The results showed that the average specific growth rate of tilapia seeds (Oreochromis niloticus) ranged from 0.65% to 0.94%, absolute growth ranged from 2 gr to 3 gr, feed efficiency ranged from 4% to 5%, and substitution of tuna fish intestine flour (Euthynnus affinis) did not significantly affect the specific growth rate (P> 0.05), while absolute growth and feed efficiency significantly affected the substitution of flour of the tuna fish intestine (Euthynnus affinis) (p <0.05).

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