scholarly journals Influence of including maize offal in diets on growth, carcass composition and economics of Clarias gariepinus

2021 ◽  
Vol 14 (3) ◽  
pp. 027-035
Author(s):  
Sunday Kenneth Igbang ◽  
Ada Fidelis Bekeh ◽  
Ochang Stephen Ncha
Keyword(s):  
Growth Parameters ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
Experimental Period ◽  
Carcass Composition ◽  
African Catfish ◽  
Feed Conversion ◽  
Increase With Increase ◽  
Significant Difference ◽  
The Hours

Aiming at finding cheaper and still efficient feed for aquaculture species 56 days feeding trial was conducted on African catfish (Clarias gariepinus) post fingerlings, fed on five diets with a 40% crude protein target in which maize was replaced with maize offal meal at 0%, 25%, 50%, 75%, and 100% respectively. Ten fish each were stocked in a plastic aquarium tank containing 20 L of water. The fish were fed at 5% body weight divided into two rations ginen at the hours of 8-8:30 am and 5-5:30pm. Growth parameters showed increase with increase in maize offal based diets, with observed weight gains of 72.42, 79.00, 95.92, 130.83 and 65.83 for diets 1, 2, 3, 4, and 5 respectively. Feed conversion ratio (recorded best in 75% maize offal based diet substitution, while the poorest was recorded at 25% maize offal diet replacement, followed by the control diet (100% maize diet). 75% maize offal replacement recorded the highest specific growth rate (p<0.05).There was significant difference (p<0.05) in the ash content, crude fiber and energy level in the fish carcass. The cost of feed used throughout the experimental period was not significantly (p>0.05) influenced by the increasing level of maize offal as a replacement for maize in the diets, as the costs were comparable. However, this study reveals that maize offal meal can successfully replaced maize up to 75% in the diet of Clarias gariepinus post fingerlings without adverse effect on growth, carcass composition and economics.

scholarly journals Growth Performance and Carcass Analysis of African Catfish (Clarias Gariepinus) Juveniles Fed Varying Inclusion Levels Of Butterfly Pea (Clitoria Ternatea) Seed Meal

2021 ◽  
pp. 1-6
Author(s):  
Adedokun Mathew Adewale ◽  
Keyword(s):  
Growth Performance ◽  
Growth Parameters ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
Carcass Composition ◽  
Seed Meal ◽  
African Catfish ◽  
Fish Feed ◽  
Clitoria Ternatea ◽  
Significant Difference

High cost of qualitative fish feed is one of problems hampering the development and profitability of fish farming and consequently leads to food insecurity in terms of food availability and accessibility. The study was conducted to determine growth parameters and carcass composition of Clarias gariepinus juveniles of mean weight 21.74g+0.54g fed with varying levels of dietary inclusion of Clitoria ternatea seed meal substituted for soybean meal over a period of eight weeks. Four iso-nitrogenous experimental diets were formulated at 0% (control), 25%, 50% and 100% inclusion levels of C. ternatea seed meal. The 8-week feeding experiment was conducted in rectangular plastic tanks, each treatment having three replicates with two feeding regime at 5% body weight and weighed every week. At the end of the intensive feeding period, samples from each treatment were oven dried for nutritive analysis of the fish carcass. The values of mean weight gain for diets I and III were 27.7+1.11 and 27.23+0.94 respectively. Comparatively, the growth parameters values; FI(g), SGR(%), FCR(g), PER(%) and NPU(%) for control diet and diet III were the best with no significant difference (p>0.05). The Carcass evaluation revealed that Diet I had the highest crude protein which was not significantly different (p>0.05) from diet III. It was established that fish fed 50% inclusion level of C. ternatea seed meal had effective comparable biological values with the control diet in terms of growth performance and feed utilization. The total fish production (kg) showed no significant difference (p>0.05) between diets I and III.

scholarly journals Efficacy of nano zinc oxide dietary supplements on growth performance, immunomodulation and disease resistance of African catfish Clarias gariepinus

2020 ◽  
Vol 142 ◽  
pp. 147-160
Author(s):  
HH Mahboub ◽  
K Shahin ◽  
AW Zaglool ◽  
EM Roushdy ◽  
SAA Ahmed
Keyword(s):  
Zinc Oxide ◽  
Growth Performance ◽  
Antioxidant Status ◽  
Body Weight Gain ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Feed Conversion ◽  
Zno Nps ◽  
Significant Difference

Zinc (Zn) is an important trace element in fish diets that is required for growth, immunity and antioxidant defense mechanisms. The current study assessed the effects of both organic and nanoparticle zinc oxide (ZnO and ZnO-NPs, respectively) on growth performance, immune response and the antimicrobial effect against Pseudomonas aeruginosa in African catfish Clarias gariepinus. Fish were fed either a control diet or diets supplemented with organic ZnO at concentrations of 20 and 30 mg kg-1 or ZnO-NPs at concentrations of 20 and 30 mg kg-1. After 60 d, a subset of the fish was injected intraperitoneally with 3 × 107 CFU ml-1 of P. aeruginosa. Results showed that body weight gain, feed conversion ratio and specific growth rates were significantly increased in ZnO-NPs20 compared to all other groups. The dietary supplementation with 20 mg kg-1 of ZnO-NPs improved the antioxidant status of fish. Moreover, IgM, lysozyme and nitric oxide showed a significant increase in the fish which received the ZnO-NPs20-supplemented diet. A significant upregulation of growth and stress-related genes was seen in the ZnO-NPs20-supplemented group compared to other groups. However, there was no significant difference in the expression of immune-related genes among ZnO-NPs20, ZnO-NPs30 and ZnO30 groups. These findings highlight the potential use of nano-ZnO for improving growth performance, antioxidant status, immunological status and antibacterial activity against P. aeruginosa in African catfish.

Effects of replacing fish meal with cockroach (Periplaneta americana) meal in the diet of African catfish (Clarias gariepinus) fingerlings

2020 ◽  
Vol 34 (2) ◽  
pp. 133-142
Author(s):  
A.M. Orire ◽  
G.B. Fasomo ◽  
M.A. Haruna
Keyword(s):  
Crude Protein ◽  
Periplaneta Americana ◽  
Fish Meal ◽  
Growth Parameters ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Meal Protein ◽  
Inclusion Level ◽  
Net Protein

This research investigated the growth performance of Clarias gariepinus fingerlings (mean weight 1.130.3g) fed cockroach meal (CM) as replacement for fish meal (FM). The fish were fed with three diets containing 45% crude protein; diet 1 (control 0% CM and 0% FM) diet 2 (10% FM, 0% CM), diet 3 (10% CM, 0% FM) for 56 days. The results showed significant differences (p<0.05) for the growth parameters evaluated for the treatments. Cockroach meal-based diet gave the best results in terms of mean weight gain (1.39+0.39g), food conversion ratio (2.54+0.15), specific growth rate (1.440.29%/day), protein efficiency ratio (0.87±0.20), apparent net protein utilization (16.23±7.19) and survival rate of 62%. This was followed by fish meal-based diet while the control diet gave a significantly (p<0.05) lower values. It can be concluded from the study that cockroach meal can substitute fish meal at 10% inclusion level. However, further study can be conducted for higher inclusion levels of cockroach meal in the diets of C. gariepinus. Keywords: Insect meal, protein, catfish, feed, growth.

Some effects of dietary penicillin and zinc bacitracin on the performance of bacon pigs

1963 ◽  
Vol 5 (3) ◽  
pp. 251-257 ◽  
Author(s):  
D. W. Holme ◽  
K. L. Robinson
Keyword(s):  
Conversion Efficiency ◽  
Control Diet ◽  
Live Weight ◽  
Experimental Period ◽  
Carcass Composition ◽  
Significant Response ◽  
Feed Conversion ◽  
Feed Conversion Efficiency ◽  
Pig Performance ◽  
Zinc Bacitracin

SUMMARYThree experiments were carried out to evaluate zinc bacitracin as compared with penicillin, as a feed supplement for bacon pigs. The first experiment compared pig performance on a control diet with performance on the control diet supplemented with penicillin, 5 g./ton, or with zinc bacitracin, 10 g./ton. Experiment 2 compared the control diet with penicillin at 10 g./ton and zinc bacitracin at 10 g./ton with pigs housed in a different piggery. Experiment 3 compared the control diet with penicillin at 10 g./ton and zinc bacitracin at two levels, 10 g./ton and 5 g./ton. In none of the experiments was there any significant response to penicillin in terms of rate of gain, feed conversion efficiency or carcass composition. In the first experiment there was a small but significant improvement in rate of gain up to 100 lb. live-weight and for the whole experimental period by the pigs receiving 10 g./ton of zinc bacitracin. There was no significant response in feed conversion efficiency or carcass measurements. In the other two experiments there was no response to zinc bacitracin. The implications of the results are discussed.

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 performance of Clarias gariepinus fed varying dietary phosphorus levels

2017 ◽  
Vol 4 (3) ◽  
pp. 215-220
Author(s):  
Ezike Christopher Onyemaechi ◽  
Chukwuka Doris Queen ◽  
Echor Felix Okaliwe
Keyword(s):  
Growth Performance ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
Palm Kernel ◽  
Fish Growth ◽  
Control Fish ◽  
African Catfish ◽  
Dietary Phosphorus ◽  
Significant Difference ◽  
And Control

One hundred and twenty (120) juveniles of African catfish Clarias gariepinus were obtained in May 2015 from a reputable Fish Farm in Enugu to the University Research Farm (latitude 074o North and 082o South, longitude 068o East and 076o West with annual mean temperature of 30oC). The fish were fed for 49 days from June – July 2015 with diets containing 4 different inclusion levels of phosphorus T1 [0.6% P], T2 [0.8% P], T3 [1.00% P], T4 [1.2% P] and T5 [0% P] which served as control diet, to determine optimum P requirement for fish growth at probability level of P < 0.05 between various treatments and control. Each diet was formulated to contain 40% crude protein composed of yellow maize, soybean cake, palm kernel cake and fish meal. Fish fed with graded levels of phosphorus were significantly higher (P < 0.05) than control in FW and MDWG. There was however no significant difference (P > 0.05) in FCR and PER between T1, T2, T4 and control but T3 was significantly (P < 0.05) better in FCR (0.33) than control (0.39). Similarly, T3 was significantly (P < 0.05) higher in PER than control. Fish in T3 had the best growth performance indicative that 1% P is the optimum requirement for the growth of C. gariepinus.Res. Agric. Livest. Fish.4(3): 215-220, December 2017

scholarly journals Effects of Tamarindus indica (Linnaeus 1753) pulp-fortified diets on the gut microflora and morphometry in African catfish Clarias gariepinus (Burchell 1822)

2021 ◽  
Vol 6 (2) ◽  
pp. 45-51
Author(s):  
Olarinke Victoria Adeniyi ◽  
Flora Eyibio Olaifa ◽  
Benjamin Obukowho Emikpe ◽  
Samuel Temitope Ogunbanwo
Keyword(s):  
Weight Gain ◽  
Growth Promotion ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
Feed Additives ◽  
African Catfish ◽  
Gut Microflora ◽  
Feed Conversion ◽  
Crypt Depth ◽  
Strong Positive Relationship

The global criticism on the adverse effects of synthetic antibiotics including destabilization of gut microflora necessitated research into natural alternative like phytobiotics. Tamarind pulp is a phytobiotic known for its antimicrobial, growth-promoting and antioxidants properties, with little information on the mechanism of its growth promotion in fish. Therefore, this study investigated the effects of tamarind pulp (TP) meal as feed additives on the growth, gut microflora, and morphometry in Clarias gariepinus. The fish were fed with diets fortified with graded levels (0.0%, 0.5%, 1.0%, 1.5% or 2.0%) of TP or 0.2% oxytetracycline (OTC). Fish weight gain, feed conversion ratio (FCR), gut microflora and morphometry were determined. The weight gain of fish rose (P 0.05) with increasing levels of TP, while the FCR reduced significantly, compared to those fed the control diets. The total viable counts and enterobacteriaceae from the gut of fish fed OTC-fortified control diet was lower, compared the fish fed unfortified control (0.0% TP) diet and diets containing TP. Fish fed 1.0-2.0% TP-fortified diets had significantly higher yeast counts, compared to those fed other diets, while on the other hand higher (P0.05) Streptococcus sp was obtained from fish fed the control diets. The thickness of muscular lining of the base of villi, villi height and absorption area were higher (P ˂ 0.05) in fish fed OTC-fortified (C2) diet, compared to other treatments, while lower crypt depth were obtained in fish fed TP-fortified diets. The correlation analyses showed moderate negative (R = -0.539 at P 0.05) relationship between FCR and population of enterobacteriaceae while a very strong positive relationship (R = 0.848 at P 0.01) existed between FCR and population of haemolytic Streptococcus. The enhanced growth in fish fed TP-fortified diets could be accredited to the reduced crypt depth and colonization of yeast and reduced Streptococcus counts. Therefore the application of tamarind pulp meal at 2% is recommended for enhanced growth and healthy gut microflora composition.

scholarly journals Growth performance of fingerlings of Clarias gariepinus fed fermented seed of Senna obtusifolia (Linn)

2020 ◽  
Vol 44 (2) ◽  
pp. 271-280
Author(s):  
H. U. Onimisi ◽  
S. J. Oniye ◽  
J. K. Balogun ◽  
P. I. Bolorunduro
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Soybean Meal ◽  
Clarias Gariepinus ◽  
Nutrient Utilization ◽  
Carcass Composition ◽  
Feed Conversion ◽  
Negative Effects ◽  
Senna Obtusifolia ◽  
Significant Difference

The effects of replacing soybean meal with graded levels of fermented Senna obtusifolia seed meals (SOSM) on the growth performance of Clarias gariepinus were investigated. Five isonitrogenous (42% crude protein) and isocaloric (25.7% NFE) diets were formulated in which fermented replaced soybean meal (SBM) at 0% (SOSM0), 25% (SOSM25), 50% (SOSM50), 75% (SOSM75) and 100% (SOSM100) inclusion levels and a commercial feed (CmF) as the second control. Three hundred and sixty (360) fingerlings of (Clarias gariepinus) mean weight (2.85±0.01g) were stocked at (20) fish per tank volume in triplicate groups per treatment and fed 3% body weight twice a day of the experimental diets for 180 days. The feeding rate was adjusted after weighing. The water qualities were within range recommended for Clarias gariepinus. There were no significant differences (p> 0.05) in growth performance and nutrient utilization between the control groups and those fed the fermented SOSM diets at 25%. The commercial, 0% and 25% groups had the highest mean weight gain (279 to 280 g), significantly (P<0.05) superior to the groups that received the, 50%, 75% while the group that received 100% SOSM diet had the poorest mean weight gain (132.72g). Feed conversion ratios (FCR) of all treatments ranged from (1.75 to 2.18). These values increased slightly by increasing levels of fermented SOSM from 50 to 100%. The best FCR, 1.75± 0.02, recorded for fish fed 25% fermented SOSM indicated a superior level of utilization of the SOSM diet by the fish. There was no significant difference (P>0.05) in the protein intake among the group of fish fed 0 and 25%, but significant difference (P<0.05) occur in fish fed 50, 75 and 100% fermented SOSM respectively. Protein efficiency ratio (PER) exhibited significant differences (P<0.05) in all treatments except in the control diets that were not statistically different (P>0.05) from the fish fed the 25% fermented SOSM. The PER values increased among the experimental fish with respect to the quantity of total feed intake. There were no significant differences (P>0.05) in apparent net protein utilization (ANPU) among treatments CmF, 0% and 25%. The ANPU was highest in fish fed 0% fermented SOSM (91.6±0.04) while fish fed 75 and 100 % fermented SOSM in diets were 71.4±0.02 and 73.4±0.03 were the least. There was a significant (P<0.05) difference in the effect of the inclusion levels of fermented (SOSM) on final body carcass composition among treatments. This study showed that soybean meal can be substituted with fermented Senna obtusifolia seed meal up to 25% level in Clarias gariepinus diets without any negative effects on the growth and feed efficiency.

scholarly journals Effect of Dietary Lipid Sources on Feed Utilization, Growth Efficiency and Carcass Composition of Clarias gariepinus Juveniles

2021 ◽  
pp. 1-9
Author(s):  
S. Nwakaji ◽  
B. S. Aliu ◽  
F. O. Nwose
Keyword(s):  
Soybean Oil ◽  
Beef Tallow ◽  
Control Diet ◽  
Clarias Gariepinus ◽  
Relative Weight ◽  
Feed Utilization ◽  
Carcass Composition ◽  
Animal Origin ◽  
Pork Lard ◽  
Significant Difference

This study was designed to investigate plant and animal lipid that can enhance feed utilization, growth, and survival of Clarias gariepinus Juveniles. Juveniles with mean weight 32.50±0.5g were stocked randomly to seven tanks replicated thrice, with each tank having seven fish each and were fed with the prepared diets with varied lipid. 40% crude protein and isocaloric diets with digestible energy of 2,933.76Kcal were formulated and labelled Diet 1-7 with different sources of plant and animal lipids. Diet 1, 2 and 3 contained palm oil, Groundnut oil and soybean oil respectively, while diet 4, 5 and 6 contained Pork lard, Cod Liver oil and Beef tallow. Diet 7 (Control diet without any lipid source). The result showed that there was no significant difference (P>0.05) in Feed conversion ratio (FCR) and survival rates among the diets. The mean weight gain was highest in fish fed with pork lard (22.12g) while the lowest value of 15.36g was recorded in fish fed with soybean oil. Relative weight gains and feed intake showed no significant difference (P>0.05) between fish fed lipids of plant origin. However, there was significant difference (P<0.05) among fish fed lipids from animal origin. The Highest Total Cholesterol (28.18 mg/dl) was recorded in fish fed beef tallow as lipid sources while the least value of low-density cholesterol (value of 2.26 mg/dl) was recorded in fish fed with soybean oil. In conclusion, C. gariepinus was able to utilize animal-based lipid sources more in terms of growth and feed utilization while the lipid profile result of the individual carcass after the culture period showed that C. gariepinus fed lipid from plant sources had a slightly better cholesterol level than those fed lipid of animal sources.

Effects of dietary Phaeodactylum tricornutum supplementation on gustation, stomach histology and growth performance of African catfish, Clarias gariepinus (Burchell, 1822)

2020 ◽  
Vol 15 (2) ◽  
pp. 1-7
Author(s):  
Oluyemi K. Gbadamosi ◽  
W. Obe Bernadine
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Feed Intake ◽  
Phaeodactylum Tricornutum ◽  
Clarias Gariepinus ◽  
Nutrient Utilization ◽  
African Catfish ◽  
Feed Conversion ◽  
Percentage Survival ◽  
Significant Difference

This study assessed the effects of microalga Phaeodactylum tricornutum supplement on the gustation, stomach histology, growth performance and nutrient utilization of Clarias gariepinus juveniles. One hundred and fifty (150) C. gariepinus juveniles of mean weight 20.05±0.05g were distributed into 15 plastic tanks (40×30×35) cm3. Five graded levels (0.00 (control), 0.50, 1.00, 1.50, and 2.00g/100g of P. tricornutum supplements were included in the diets of C. gariepinus denoted as Control, PT1, PT2, PT4 and PT5, respectively. Fish were fed for 56 days at 5% body weight. Results at the end of the experiments showed that the highest body weight was recorded in fish fed 1.5g/100g P. tricornutum diets. The best feed conversion ratio, specific growth rate, protein efficiency ratio and percentage survival was found in PT3. There was significant difference (p<0.05) in the feed intake of fish with PT4 having the highest feed intake. The stomach histology revealed increase in the gustation cells in the stomach of experimental fish with increasing levels of P. tricornutum supplementation. This study showed that the inclusion of P. tricornutum supplement at 1.5g/100g level in the diet of C. gariepinus juveniles improved the gustation, growth performance and nutrient utilization of C. gariepinus. Keywords: Microalgae, Aqua feed, Nutrition, Gustation, African catfish

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