scholarly journals Effects of dietary inclusion of Spirulina meal on growth and hematological parameters of cultured Asian sea bass, Lates calcarifer

2017 ◽  
Author(s):  
Chin Yong Tan ◽  
German Bueno Galaz ◽  
Rossita Shapawi
Keyword(s):  
Growth Performance ◽  
Fish Meal ◽  
Hematological Parameters ◽  
Control Diet ◽  
Sea Bass ◽  
Whole Body ◽  
Fish Stock ◽  
Feed Conversion ◽  
Lates Calcarifer ◽  
Asian Sea Bass

This study was conducted to investigate the effects of dietary inclusion of Spirulina platensis on growth performance and hematological parameters of juvenile Asian sea bass (Lates calcarifer) reared in a freshwater culture system. Five experimental diets were prepared by replacing fish meal protein with the microalga at replacement levels of 5% (SP5), 10% (SP10), 20% (SP20) and 30% (SP30), and the substitution effect was compared with a control diet (Con) in which fish meal was the sole protein. Fish were stocked in net cages placed in a 150-ton tank with a stocking density of 20 fish per cage. After 8 weeks of feeding trial, the fish did not show any significant differences in growth performance but numerically higher weight gain and specific growth rate were achieved in the fish stock fed diet SP10 compared to other treatments. Feed conversion ratio and survival rate of fish were significantly affected by the inclusion of Spirulina in the diets. Except for crude ash content, whole-body proximate composition of the experimental fish was also significantly influenced by the diets. Regarding the effects of diets on blood parameters, only hematocrit, hemaglobin, HDL-c and AST were significantly affected by the inclusion of Spirulina in the diets. This study demonstrated that Spirulina could replace up to 10% of FM protein in practical diets of juvenile Asian sea bass without negative effects on growth performance. However, replacement of fish meal with Spirulina meal at 5% might be considered for commercial use considering a significant decrease in survival above this value.

scholarly journals Growth performance and genetic diversity in four strains of Asian sea bass, Lates calcarifer (Bloch, 1790) cultivated in Thailand

2018 ◽  
Vol 52 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Weerakit Joerakate ◽  
Suthajaree Yenmak ◽  
Wansuk Senanan ◽  
Suriyan Tunkijjanukij ◽  
Skorn Koonawootrittriron ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Growth Performance ◽  
Sea Bass ◽  
Lates Calcarifer ◽  
Asian Sea Bass

scholarly journals Extract of grape seed enhances the growth performance, humoral and mucosal immunity, and resistance of common carp (Cyprinus carpio) against Aeromonas hydrophila

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Zohre Mehrinakhi ◽  
Ehsan Ahmadifar ◽  
Najmeh Sheikhzadeh ◽  
Mohsen Shahriari Moghadam ◽  
Mahmoud A.O. Dawood
Keyword(s):  
Disease Resistance ◽  
Growth Performance ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Aeromonas Hydrophila ◽  
Hematological Parameters ◽  
Control Diet ◽  
Grape Seed ◽  
Control Group ◽  
Feed Conversion

AbstractThis study evaluated the effects of grape seed extract (GSE) on the growth performance, immune response, and disease resistance of common carp (Cyprinus carpio). Fish were distributed in four groups and fed diets with varying levels of GSE at 0, 10, 20, and 30 g/kg for 56 days. The final length in fish fed with 20 and 30 g GSE/kg diet significantly increased in comparison with the control group (P<0.05). The final weight and weight gain of fish fed with GSE were statistically higher than the control diet, while the feed conversion ratio was lower in GSE groups than the control. Hematological parameters did not statistically enhance with GSE supplemented diets (P>0.05). However, fish fed with 30 g GSE/kg diet displayed a higher WBC count significantly than the other group (P<0.05). The serum total protein and globulin in fish fed with 20 g GSE/kg diet significantly increased compared to the control (P<0.05). A similar pattern was noticed in results for serum and mucus lysozyme activity with a significant increase in fish fed with 20 and 30 g GSE/kg diet compared to the control (P<0.05). Total antibody levels in serum and mucus samples were also increased in fish by dietary GSE with maximum levels by 20 and 30 g GSE/kg diet. Besides, mucus protease activity was higher in fish received 20 and 30 g GSE/kg diet with maximum level shown in fish fed with 30 g GSE/kg diet compared to the control group (P<0.05). Meanwhile, all groups showed higher mucus antibacterial activity against Aeromonas hydrophila with the highest activity in 30 g GSE/kg diet in comparison with the control group. The cumulative mortality was 36.67% when fish fed with 30 g GSE/kg diet and challenged with A. hydrophila. However, the mortality rate was 40% and 53.33% in fish fed 20 and 30 g GSE/kg diet, respectively. This study suggests that supplementation of GSE could significantly enhance the growth performance, immune responses, and disease resistance against A. hydrophila in common carp.

scholarly journals Growth Performance and Survivability of the Asian Seabass Lates Calcarifer Reared Under Hyper-Saline, Hypo-Saline and Freshwater Environments in a Closed Aquaculture System

2021 ◽  
Author(s):  
Habib Ul Hassan ◽  
Qadeer Mohammad Ali ◽  
Zubia Masood ◽  
Mohammad Abdul Momin Siddique
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Feeding Rate ◽  
Sea Bass ◽  
Salinity Treatment ◽  
Lates Calcarifer ◽  
Asian Seabass ◽  
Treatment Groups ◽  
Health Indices ◽  
Asian Sea Bass

Abstract Salinity is one of the most critical environmental parameters regarding fish physiology, modifying food intake and growth performance in many fish species. The present study has investigated the effects of different salinity levels on growth performance, feeding and survival of Asian seabass Lates calcarifer juveniles. Asian seabass juveniles were reared at 0, 5, 22, 36, and 42 ppt salinity. One five hundred ninety-eight fish individuals with an average weight 1.2 ± 0.11 g were randomly distributed (166 fish/Tank) in 5 concrete tanks (30×6×4 feet) each; length × width × depth) and volume 19,122 L, for total forty days. Initially feeding rate of 6% biomass per day with 42% crude protein-containing diets daily. The feeding rate adjusted according to fish biomass every week. The results showed that salinity level had a significant effect on the weight gain, average daily weight gain, specific growth rate, feed conversion ratio, survival rate, total biomass and health indices (p < 0.05). The highest WG (39.11±1.49 g), ADWG, (1.00±0.12 g), SGR (8.74±0.03 % d-1) and lowest FCR (0.96±0.20) observed with T3 (22 ppt salinity) treatment, which was significantly higher compared to other treatment groups (p < 0.05). Among the health indices, the highest hepatosomatic index and viscerosomatic index found with 22 ppt salinity treatment, which was also significantly higher than the other treatment groups (p < 0.05). No significant differences were found among the treatments in terms of survival rate (p > 0.05), but the maximum survival rate (98.89±0.0 %) in T3 (22 ppt) and T2 (5 ppt). The maximum level of crude proteins (19.99±1.4%) was found in the whole-body biochemical composition (% of wet weight) of Asian sea bass juveniles in T3 treatment group reared at 22 ppt salinity. The second-order polynomial regression showed that 20 ppt salinity is optimum for the best growth of Asian sea bass. Thus, our present work would provide valuable information to the fish farmers for culturing the sea bass as well as its management along the inland and coastline of Pakistan.

scholarly journals Effect of a New Feed Daphnia magna (Straus, 1820), as a Fish Meal Substitute on Growth, Feed Utilization, Histological Status, and Economic Revenue of Grey Mullet, Mugil cephalus (Linnaeus 1758)

2021 ◽  
Vol 13 (13) ◽  
pp. 7093
Author(s):  
Hamdy A. Abo-Taleb ◽  
Mohamed Ashour ◽  
Mohamed A. Elokaby ◽  
Mohamed M. Mabrouk ◽  
Mohamed M. M. El-feky ◽  
...  
Keyword(s):  
Regression Model ◽  
Growth Performance ◽  
Fish Meal ◽  
Control Diet ◽  
Experimental Period ◽  
Cell Number ◽  
Feed Utilization ◽  
Fish Growth ◽  
Partial Substitution ◽  
Feed Conversion

The formulator of aquatic diets is part of a continuous search for alternative protein sources instead of depreciated fish meal. The utilization of zooplankton as a feed ingredient is an interesting trend due to their high-quality protein content and abundance of essential nutrients. The current study aims to investigate the effects of partial and total replacement of fish meal (FM) by Dahpnia magna meal (DMM) on growth performance, feed utilization, histological, and economic status of mullet, M. cephalus, larvae. In addition to the control diet, 100% FM, D0, four diets containing DMM at different levels were used: 25% (D25), 50% (D50), 75% (D75), and 100% (D100) replacement of fish meal. A total of 300 larvae (0.097 ± 0.001 g) were equally divided into five groups (three replicate per each group) at a density of 200 larvae m−3. The aquariums were renewed at a rate of 30% daily. During the 60-day experimental period, all larvae were fed their respective diets at a level of 20% of live body weight, five times a day (9.00 a.m., 12.00, 15.00, 18.00, and 21.00 p.m.). The results indicated that compared to D0, fish fed D75 recorded the highest significant value of growth, and feed utilization parameters, while fish fed D100 achieved the lowest feed cost and incidence cost, and the highest profit index and economic efficiency ratio. A strong correlation was reported among weight gain, feed conversion ratio and fish meal replacement with DMM; R2 = 0.94 and 0.91, respectively. The fit regression model representing mullet response to FM replacement with DMM is a poly-nominal regression model with maximum response at 75–100%. The histological investigation of the intestine revealed an improvement of histomorphometric indices and goblet cell number with increasing DMM inclusion levels. These findings confirmed that 75% to 100% partial substitution of FM with DMM is the ideal replacement for mullet, M. cephalus, larvae for improving fish growth performance and feed utilization.

scholarly journals Immune response and growth of Lates calcarifer fed on hydrolized protein-supplemented diet

2015 ◽  
Vol 13 (2) ◽  
pp. 179
Author(s):  
Romi Novriadi ◽  
Tinggal Hermawan ◽  
, Ibtisam ◽  
, Dikrurrahman ◽  
Muh Kadari ◽  
...  
Keyword(s):  
Immune Response ◽  
Growth Performance ◽  
Vibrio Parahaemolyticus ◽  
Challenge Test ◽  
Relative Weight ◽  
Sea Bass ◽  
Protein Hydrolysates ◽  
Control Group ◽  
Lates Calcarifer ◽  
Asian Sea Bass

<p class="BasicParagraph" align="center"><strong>ABSTRACT</strong></p><p class="BasicParagraph" align="center"><strong><br /></strong></p><p class="BasicParagraph" align="center"> </p><p class="Pa2">This experiment was aimed to investigate the effects of protein hydrolysates on growth performance and immune response of the Asian sea bass <em>Lates calcarifer </em>Bloch. The experiment was performed in two different rearing period, namely nursery and grow out by using completely randomized design. Experimental fish were fed with three types of diets and each treatment was repeated three times: a local commercial diet (control), coated or not, with 2%, and 3% of protein hydrolysates. Challenge test was performed with <em>Vibrio parahaemolyticus </em>at a density of 105 sel/mL by using immersion method. The results showed that the the neutrofil, leukocyte and monocyte of the fish fed on protein hydrolisates were significantly higher than those non-supplemented group (P&lt;0.05). Meanwhile, the lymphocyte on the fish treated with hydrolisates showed no difference amongst treatments (P&lt;0.05). The growth performance of Asian sea bass fed on protein hydrolisates significantly improved the total fish weight (g), relative weight gain, specific growth rate, final weight (g) and final length (cm) in comparison to the control (P&lt;0.05) both at nursery and grow out phase. Higher survival both at the nursery and grow out phase were obtained by the group fed with 3% protein hydrolisates: 97.28±0.18% and 86.0±4.32%. Followed with 2% supplementation level 96.75±0.28% and 78.4±7.7%. The lowest survival was shown by the control group with 93.65±0.13% and 20.1±21.1% from nursery and grow-out phase respectively. Results of challenged test showed that the protein hydrolisates supplementation was able to improve the post-challenged survival and resistency of Asian sea bass against <em>V. parahaemolyticus </em>infection. Fish treated with 3% protein hydrolisates generated higher survival 78,33±2,89%, followed by treatment 2% 73,33±5,77%, and control 31,67±7,64% after five days post immersion (P&lt;0.05).</p><p class="Default"> </p><p class="Pa2">Keywords: Asian sea bass, protein hydrolisates, growth, immune system</p><p class="BasicParagraph" align="center"><strong> </strong></p><br class="BasicParagraph" /><p class="BasicParagraph"> </p><p class="BasicParagraph"> </p><p class="BasicParagraph" align="center"><strong>ABSTRAK</strong></p><p class="BasicParagraph"><strong> </strong></p><p class="Pa2">Penelitian ini bertujuan untuk menguji efektivitas suplementasi protein hidrolisis pada pakan terhadap respons kekebalan tubuh dan performa pertumbuhan ikan kakap putih <em>Lates calcarifer</em>. Penelitian dilakukan di dua fase pemeliharaan, yakni fase pendederan dan pembesaran dengan menggunakan rancangan acak lengkap. Penelitian ini menggunakan tiga perlakuan dan masing–masing perlakuan memiliki tiga ulangan, dengan deskripsi perlakuan adalah kontrol, aplikasi 3% dan 2% protein hidrolisis. Uji tantang dilakukan dengan menggunakan <em>Vibrio parahaemolyticus </em>pada konsentrasi 105 sel/mL dengan metode perendaman. Hasil analisa respons kekebalan tubuh menunjukkan bahwa neutrofil, leukosit, dan monosit pada kelompok ikan yang mendapatkan aplikasi protein hidrolisis meningkat secara nyata dibandingkan kontrol (P&lt;0,05). Sementara limfosit pada kelompok perlakuan protein hidrolisis tidak memiliki perbedaan yang nyata dibandingkan kontrol (P&lt;0,05). Performa pertumbuhan ikan kakap putih yang mendapatkan suplementasi protein hidrolisis juga memiliki total bobot (g), % bobot relatif, % laju pertumbuhan spesifik, bobot akhir (g) dan panjang akhir (cm) yang secara nyata lebih baik jika dibandingkan dengan kontrol (P&lt;0,05) baik pada masa pemeliharaan di pendederan maupun di pembesaran. Sintasan paling tinggi pada fase pendederan dan pembesaran terdapat pada kelompok suplementasi 3% dengan 97,28±0,18% dan 86,0±4,3%. Diikuti oleh kelompok 2% dengan 96,75±0,28% dan 78,4±7,7%; dan paling rendah diperoleh pada kelompok kontrol dengan 93,65±0,13 % dan 20,1±21,1% masing-masing dari fase pembenihan dan pembesaran. Hasil uji tantang menunjukkan bahwa suplementasi protein hidrolisis mampu meningkatkan sintasan dan meningkatkan resistensi ikan uji terhadap infeksi <em>V. parahaemolyticus</em>. Pemberian protein hidrolisis dengan konsentrasi 3% merupakan dosis terbaik dengan sintasan 78,33±2,89%, diikuti oleh aplikasi 2% dengan 73,33±5,77% dan kontrol dengan 31,67±7,64% setelah lima hari masa uji tantang (P&lt;0,05).</p><p class="Default"> </p><p class="Pa2">Kata kunci: ikan kakap putih, protein hidrolisis, pertumbuhan, sistem kekebalan tubuh</p><br /><p> </p>

scholarly journals Effect of Dietary Protein Levels on Growth Performance, Hematological Parameters and Digestive Enzymes in Juveniles of Brycon amazonicus (Spix & Agassiz, 1829)

2021 ◽  
Author(s):  
Anny Cristina V. Leite ◽  
Jackson Pantoja-Lima ◽  
Renan R. Paulino ◽  
Márcia Regina Fragoso M. Bussons ◽  
Rodrigo Y. Gimbo ◽  
...  
Keyword(s):  
Growth Performance ◽  
Digestive Enzymes ◽  
Crude Protein ◽  
Retention Rate ◽  
Hematological Parameters ◽  
Matter Content ◽  
Whole Body ◽  
Dry Matter Content ◽  
Feed Conversion ◽  
Protein Levels

A 52-day experiment was conducted to determine the crude protein (CP) requirements of juvenile matrinx&atilde; Brycon amazonicus, and to evaluate their resulting growth performance, hematological parameters and enzymatic activities. Sixty fish (29.03g &plusmn; 1.16g) were distributed in 12 tanks (310 L) with a completely randomized design, and maintained at four dietary crude protein levels (270, 320, 350, 390 g.kg-1) for 52 days. The results revealed that the fish fed diet 390 g.kg-1 CP had the best final weight, weight gain, feed conversion ratio, specific growth rate, protein efficiency ratio and lipid retention rate. The same could be stated for hematocrit, number of circulating erythrocytes, triglycerides and total proteins of the hematological profile (p&amp;lt;0.05). In the whole body composition, dry matter content was lower in the fish fed 390 g.kg-1 CP, while lipid content was higher in the fish fed 350-390 g.kg-1 CP (p&amp;lt;0.05). No differences were observed in CP and ash (p&amp;gt;0.05), or in the activities of digestive enzymes (p&amp;gt;0.05). In short, our findings suggest benefits of the 390 g.kg-1 CP feed for being the most adequate for this species&rsquo; juvenile stage.

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