scholarly journals Effects of Dissolved Potassium on Growth Performance, Body Composition, and Welfare of Juvenile African Catfish (Clarias gariepinus)

Fishes ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 11
Author(s):  
Lisa Carolina Wenzel ◽  
Sebastian Marcus Strauch ◽  
Ep Eding ◽  
Francisco Xose Presas-Basalo ◽  
Berit Wasenitz ◽  
...  
Keyword(s):  
Body Composition ◽  
Crop Production ◽  
Clarias Gariepinus ◽  
Skin Lesions ◽  
Plant Production ◽  
African Catfish ◽  
Feeding Time ◽  
Feed Conversion ◽  
Recirculating Aquaculture ◽  
Water Ph

Optimal crop production in aquaponics is influenced by water pH and potassium concentrations. The addition of potassium hydroxide (KOH) into the recirculating aquaculture system (RAS) may benefit aquaponics by increasing the water pH for better biofilter activity and supplementing K for better plant growth and quality. We investigated the growth, feed conversion, body composition and welfare indicators of juvenile African catfish (Clarias gariepinus) treated with four concentrations of K (K0 = 2, K200 = 218, K400 = 418, and K600 = 671 mg L−1). While growth, feed conversion and final body composition were unaffected, the feeding time and individual resting significantly increased with increasing K+. The swimming activity and agonistic behavior were reduced significantly under increased concentrations of K+. Leftover feed and the highest number of skin lesions were observed under K600. We suggest that K+ concentrations between 200 and 400 mg L−1 can improve the welfare status of juvenile African catfish. This enables the application of KOH in RAS to supply alkalinity to achieve optimum nitrification at minimum water exchange and improve the nutritional profile of the process water with benefits for the welfare status of African catfish and aquaponics plant production and quality.

scholarly journals Partial replacement of fishmeal with Spirulina platensis and Chlorella vulgaris and its effect on growth and body composition of African catfish Clarias gariepinus (Burchell 1822)

2019 ◽  
Vol 66 (4) ◽  
Author(s):  
Ameenat Abiodun Raji ◽  
Olawale Quazim Junaid ◽  
Pozi Milow ◽  
Norhidayah Mohd. Taufek ◽  
Adamu Misau Fada ◽  
...  
Keyword(s):  
Growth Rate ◽  
Body Composition ◽  
Chlorella Vulgaris ◽  
Spirulina Platensis ◽  
Clarias Gariepinus ◽  
Proximate Analysis ◽  
Partial Replacement ◽  
African Catfish ◽  
Feed Conversion ◽  
Fishmeal Replacement

The study examined the effect of partial replacement of fishmeal with Spirulina platensis (SP) and Chlorella vulgaris (CL) powder in the diets of African catfish Clarias gariepinus (Burchell 1822) fingerlings on growth performance and body composition. Nine diets (45.14-48.45% crude protein) consisting SP or CL as fishmeal replacement at zero (control), 12.5, 25, 50 and 75%, were fed to triplicate groups of 10 fingerlings (7.82±0.08 g) each for 56 days. The results showed statistically higher weight gain, specific growth rate, protein efficiency ratio, relative growth rate, Fulton’s condition factor (K) and a corresponding lower feed conversion ratio when the replacement of C. vulgaris was at 75%. Proximate analysis revealed a significantly greater carcass protein in the SP12.5% and the highest flesh lipid and gross energy in SP75% groups. Flesh lipid increased with increasing SP and CL levels. Polynomial curve estimation regression analysis revealed the optimum fishmeal replacement levels for best growth are at 68.5 and 69.4% for SP and CL, respectively. CL was found to be more efficient in terms of growth and effective feed utilisation than SP.

scholarly journals Analysis of Aquaponic-Recirculation Aquaculture System (A - Ras) Application in the Catfish (Clarias gariepinus) Aquaculture in Indonesia

2021 ◽  
Vol 21 (3) ◽  
pp. 93-100
Author(s):  
Arning Wilujeng Ekawati ◽  
Siti Mariyah Ulfa ◽  
Citra Satrya Utama Dewi ◽  
Abdul Aziz Amin ◽  
Lutfi Ni’matus Salamah ◽  
...  
Keyword(s):  
Water Quality ◽  
Clarias Gariepinus ◽  
Feed Conversion ◽  
Water Spinach ◽  
Recirculating Aquaculture ◽  
System A ◽  
Recirculating Aquaculture Systems ◽  
Recirculation Aquaculture System ◽  
Nitrate And Nitrite ◽  
Additional Income

Water quality and waste management are significant problems for aquaculture in Indonesia, including catfish (Clarias gariepinus) aquaculture. A combination of Aquaponics Systems and Recirculating Aquaculture Systems (A-RAS) has been developed to address this problem. This study analyzed A-RAS application for catfish (Clarias gariepinus) aquaculture by comparing water quality and production indicators between A-RAS and conventional methods. The results show that temperature, pH, dissolved oxygen, total organic matter, ammonia, nitrate and nitrite in A-RAS technology were 28.0-30.0°C, 6.5-7.9, 3.8-7.8 mg/L, 18.54-24.97 mg/L, 0.12- 0.28 mg/L, 0.12-0.13 mg/L, and 0.04-0.13 mg/L, respectively. Survival Rate, Feed Conversion Ratio, and harvest in A-RAS application were 85.5%, 1.1, and 26 kg/m³, respectively. A-RAS technology can maintain water quality to be reused in cultivation and increase yields by about 13%. Besides, water spinach can be an additional income for farmers.

scholarly journals Effects of Ortho-Phosphate on Growth Performance, Welfare and Product Quality of Juvenile African Catfish (Clarias gariepinus)

Fishes ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 3 ◽  
Author(s):  
Sebastian Strauch ◽  
Judith Bahr ◽  
Björn Baßmann ◽  
Adrian Bischoff ◽  
Michael Oster ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Performance ◽  
Clarias Gariepinus ◽  
Phosphate Fertilizer ◽  
African Catfish ◽  
Feed Conversion ◽  
Fish Welfare ◽  
P Fertilizer ◽  
Skin Coloration

Ortho-phosphate inside recirculation aquaculture systems is limited as a consequence of precipitation and regular water exchange rates. To improve plant growth in coupled aquaponics, phosphate fertilizer addition to hydroponics can increase PO43−-P concentrations inside the process water. We investigated the effects of four PO43−-P concentrations (<10 (P0), 40, 80, 120 mg L−1) in rearing water on growth performance, feed efficiency, and welfare traits of juvenile African catfish (Clarias gariepinus Burchell, 1822). By trend, optimum specific growth rate of 2.66% d−1 and feed conversion ratio of 0.71 were observed at 40 and 80 mg L−1 PO43−-P. Higher PO43−-P significantly affected skin coloration, swimming activity and external injuries, with the palest and inactive fish combined with most external injuries in the P120 group. Mineral and protein contents in the fish remained unaffected, while fat content inside the fillets enriched with increasing PO43−-P. Inorganic P in blood plasma increased significantly, while phosphate concentrations inside the fillet remained unchanged. We suggest that PO43−-P concentrations of 40 to 80 mg L−1 do not reduce the performance of African catfish aquaculture, while increased values of 120 mg L−1 affect fish welfare. This allows limited addition of PO43−-P fertilizer in coupled aquaponics with African catfish to support plant growth.

Effects of density, PVC-tubes and feeding time on growth, stress and aggression in African catfish (Clarias gariepinus)

2015 ◽  
Vol 47 (8) ◽  
pp. 2553-2568 ◽  
Author(s):  
Jeroen G J Boerrigter ◽  
Ruud van den Bos ◽  
Hans van de Vis ◽  
Tom Spanings ◽  
Gert Flik
Keyword(s):  
Clarias Gariepinus ◽  
Growth Stress ◽  
African Catfish ◽  
Feeding Time ◽  
Effects Of Density

scholarly journals Pengaruh pemberian mikrokapsul probiotik Bacillus cereus P22 dan Staphylococcus lentus L1k pada pakan terhadap kinerja pertumbuhan, respons imun, dan resistensi ikan lele, Clarias gariepinus Burchell 1822 yang diinfeksi Aeromonas hydrophila

2018 ◽  
Vol 17 (2) ◽  
pp. 143
Author(s):  
Lilik Setiyaningsih ◽  
Widanarni Widanarni ◽  
Angela Mariana Lusiastuti3 ◽  
Munti Yuhana
Keyword(s):  
Bacillus Cereus ◽  
Growth Performance ◽  
Aeromonas Hydrophila ◽  
Clarias Gariepinus ◽  
Bacterial Count ◽  
Negative Control ◽  
Total Bacterial Count ◽  
African Catfish ◽  
Feed Conversion ◽  
Significant Difference

The aimed of this research was to evaluate the effects of dietary probiotic microcapsules B.cereus P22 and S. lentus (L1k) at different dose and frequency on growth performance, immune response and resistance of African catfish infected with A. Hydrophila. Probiotics used in this study were B. cereus P22 and S. lentus L1k encapsulated by spray draying method. The research was carried out for 56 days with eight treatments and four replications. The treatments were K- (negative control), K+ (positive control), A (feed supplemented with 0,5% of microencapsulated probiotic, fedevery day), B (feed supplemented with 0,5% of microencapsulated probiotic, fed once every three days), C (feed supplemented with 1% of microencapsulated probiotic, fed every day), D (feed supplemented with 1% of microencap-sulated probiotic with an administration once every three days), E (feed with 2% of microencapsulated probiotic with an administration every day) and F (feed with 2% of microencapsulated probiotic with an administration once every three days). On day 42, all of the fish except K- were challenged by intramuscular injection of A. hydrophila (108 CFU ml-1). In 40 days after infection, there were no significant difference on survival rate (SR) between treatments (p> 0.05). Treatment E displayed the higher growth rate (4,54±0,02%), total probiotic B. cereus (P22) and S . lentus (L1k) (4.06± 0.09 log CFU g-1; 4.02±0.08 log CFU g-1) than other treatments; whereas treatment D showed the best feed conversion rasio(1.191±0.013), and treatment F offered the highest total bacterial count (7.11±0.53 log CFU g-1). An administration of 2% microencapsulated probiotic in every day frequency demonstrated the better growth performance, immune res-ponse and resistance of African catfish to A. hydrophila compare with other treatments. AbstrakPenelitian ini bertujuan untuk mengkaji dosis dan frekuensi pemberian mikrokapsul probiotik melalui pakan terhadap kinerja pertumbuhan, respons imun, dan resistensi ikan lele yang diinfeksi Aeromonas hydrophila. Penelitian ini meng-gunakan Bacillus cereus P22 dan Staphylococcus lentus L1k yang telah dienkapsulasi melalui metode spray draying. Penelitian ini dilaksankan selama 56 hari dengan delapan perlakuan dan empat ulangan, terdiri atas perlakuan K- (kon-trol negatif), K+ (kontrol positif), A (pakan+mikrokapsul probiotik dosis 0,5% frekuensi setiap hari), B (pakan+mikro-kapsul probiotik dosis 0,5% frekuensi tiga hari sekali), C (pakan+mikrokapsul probiotik dosis 1% frekuensi setiap hari), D (pakan+mikrokapsul probiotik dosis 1% frekuensi tiga hari sekali), E (pakan+mikrokapsul probiotik dosis 2% fre-kuensi setiap hari) dan F (pakan+mikrokapsul probiotik dosis 2% frekuensi tiga hari sekali). Ikan diuji tantang dengan A. hydrophila pada hari ke 42 dengan kepadatan 108 CFU ml-1 secara intramuscular (kecuali K- diinjeksi dengan phos-phate buffer saline). Setelah 40 hari pascainjeksi, laju sintasan tidak menunjukkan perbedaan yang signifikan antarperlakuan (p>0,05).Perlakuan E menunjukkan laju pertumbuhan (4,54±0,02%) dan total probiotik B. cereus (P22) dan S. lentus (L1k) (4,06±0,09 log CFU g-1; 4,02±0,08 log CFU g-1) tertinggi; sementara perlakuan D memberikan hasil nisbah konversi pakan terbaik (1,191±0,013), perlakuan F menunjukkan total bacterial count tertinggi (7,11±0,53 log CFU g-1). Hasil penelitian menunjukkan bahwa dosis 2% yang diberikan setiap hari memberikan hasil yang lebih baik dalam meningkatkan laju pertumbuhan, respons imun, dan resistensi ikan lele terhadap A. hydrophila. 

scholarly journals GROWTH OF AFRICAN CATFISH (Clarias gariepinus) JUVENILES FED GRADED LEVELS OF ROASTED RICE CHAFF AS ENERGY SOURCE

2020 ◽  
Vol 4 (2) ◽  
pp. 386-391
Author(s):  
Ahmed Salihu Dan-kishiya ◽  
C. C. Ekpenwa
Keyword(s):  
Energy Source ◽  
Body Weight ◽  
Low Cost ◽  
Block Design ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Fish Feed ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Crude Lipid

The high cost of Maize as energy source in fish feed has necessitated the need to search for low cost and locally available indigenous sources. A six months feeding trial was conducted to examine the effects of replacing maize with roasted rice chaff as a dietary energy source on the growth of juveniles of Clarias gariepinus using Completely Randomized block Design with five different treatments. The fishes were subjected to five different inclusion levels of roasted rice chaff meal (0%, 25%, 50%, 75% and 100%). The trial was conducted in a 50litres plastic bowl with replicates and feeding was done initially at 3% body weight, but the quantity of feeds was adjusted based on the new weight gain. The measurements of the fishes were carried out biweekly according to standard methods and procedures. The Roasted rice chaff meal (RRCM) contains 5.93% crude protein, 14.53% crude fibre, 0.92% moisture content, while Ash content, crude lipid and carbohydrates had 19.98%, 3.28% and 55.36% respectively. Fishes fed 100% RRCM recorded the best growth performance in body weight (435.10 ± 20.60gm), total length (45.30 ± 0.70cm), Specific growth rate (1.44 ± 0.01), Feed Conversion Ratio (2.50 ± 0.04) and Feed Intake (92.00 ± 3.40). While the least growth ware observed in 0% RRCM. However, all the physico-chemical parameters measured are within the recommended range for fish culture. Therefore, the result obtained shows that roasted rice chaff can replace maize as a source of energy in Clarias gariepinus.juveniles diets without any negative effect.

scholarly journals Comparative Assessment of Growth Performance and Nutrients Utilization of African Catfish (Clarias gariepinus, Burchell 1882) Fed Chicken Offal and Shrimp-Based Diets

2019 ◽  
pp. 1-11
Author(s):  
Elvis Monfung Ayim ◽  
Ettah Akpang Ivon ◽  
Raymond Odey Ajang ◽  
Akaninyene Paul Joseph
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Juvenile Fish ◽  
Clarias Gariepinus ◽  
Feed Consumption ◽  
African Catfish ◽  
Fish Feed ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Fish Group

A comparative study on the growth performance of African catfish (Clarias gariepinus) fed shrimp based diet (SBD), chicken offal based diet (COBD) and coppens feed was carried-out for 22 weeks in concrete tanks measuring 3.5 x 1.7 x 1.5 m3. Triplicate groups of 40 juveniles with average length of 9.15 ± 0.17cm and weight of 20.00 ± 2.58g were stored in each tank. A total of 360 juveniles were used throughout the study. Fish were fed daily at 3% of their body weight through-out the duration of the experiment. The nutrient composition of the 3 nutrients differed significantly at p<0.05. Weight gain (WG) (g) was highest (17189.33 ± 506.61g) in fish fed diet A (Coppens feed), followed by 15045.33±202.42 g (diet B) (SBD) and least (14357.33 ± 108.25 g) (diet C) (COBD). The Growth rate (GR) was highest in fish fed with diet A (111.62 ± 3.29 g/day), followed by 97.69±1.31 g/day (diet B), and least (93.23±0.70 g/day) in diet C. Specific growth rate (SGR) was highest in juveniles fed diet A (2.02 ± 0.02 %/day), followed by 1.94±0.01 %/day for diet B, and least (1.91±0.01 %/day) for diet C. Mean growth rate (MGR) was highest in juveniles fed diet A (11.88 ± 0.29 mg/day), followed by 11.74±0.15 mg/day for diet B, and least (11.69±0.09 mg/day) in fish fed diet C. The WG, GR and SGR varied significantly between the juvenile fish group fed the 3 diets at p<0.05, while MGR did not vary significantly between fish group fed the 3 diets at p>0.05. Fish fed diet A had a higher feed consumption (FC) (41650.00 ± 315.34 g/kg), than that fed diet B (39034.24 ± 86.34 g/kg) and then diet C (38276.00 ± 342.97 g/kg). Juveniles fed Coppens feed did better, with a feed conversion ratio (FCR) of 2.42 ± 0.06, followed by 2.59±0.04 for diet B and 2.67 ± 0.03 for fish fed diet C. Feed conversion efficiency (FCE) was higher in fish fed diet A (41.26±0.94 %), followed by 38.54 ± 0.54 % (diet B) and least (37.52 ± 0.51 %) (diet C). The FC and FCR varied significantly between the fish fed the 3 diets at p<0.05, while FCE was not significantly different between the 3 treatment groups at p>0.05. The water parameters of the culture water varied significantly between each treatment groups (p<0.05), and were within the rage suitable for normal growth of fish. Though coppens feed yielded better growth performance and feed utilisation, the use of COBD and SBD is recommended for fish farmers in Nigeria. More researches should be carried out on using chicken offals and shrimps in fish feed formulation.

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