Evaluation of body weight and color of cultured European catfish (Silurus glanis) and African catfish (Clarias gariepinus) using image analysis

The results of reproduction were tested in females of the African catfish (Clarias gariepinus Burchell 1822) after stimulation of ovulation with carp pituitary (4 mg/kg body weight) or with Lecirelin (15 μg/kg) and metoclopramide (10 mg/kg). After administering the synthetic substance eggs were obtained from all females while in the group treated with pituitary homogenate 7 out of 8 hypophysed females spawned. The applied spawning agent did not significantly influence the weight of eggs expressed in grams, but in the case of females treated with carp pituitary homogenate a significantly higher weight of eggs expressed as the percentage of body weight of fish was recorded. The applied stimulators of ovulation did not affect any trait reflecting the quality of eggs. Females used as an experimental material belonged to two categories in respect of body weight: lighter females with average body weight of 2.63 ± 0.36 kg and heavier females with average body weight of 3.91 ± 0.48 kg. It was proved that the weight of eggs expressed either in grams or as a percentage of a female’s weight was significantly related to the body weight of a female (P ≤ 0.01 and P ≤ 0.05, respectively), as well as the percentage of fertilised eggs and the percentage of living embryos after 28 hours of incubation (P ≤ 0.05 and P ≤ 0.05, respectively). The interaction between the stimulator of ovulation and the female body weight was significant only for traits reflecting the weight of obtained eggs (P ≤ 0.05 and P ≤ 0.01).  

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Improving the biotechnology of growing Silurus Glanis L., Clarias Gariepinus, Pangasius Hypophthalmus catfish (Siluroidea) in the waters of energy facilities

E3S Web of Conferences ◽

10.1051/e3sconf/202128801045 ◽

2021 ◽

Vol 288 ◽

pp. 01045

Author(s):

Marina Kalaida ◽

Svetlana Borisova ◽

Evgeny Piganov ◽

Farhad Ismagilov ◽

Andrey Kalaida

Keyword(s):

Species Diversity ◽

Clarias Gariepinus ◽

Silurus Glanis ◽

European Catfish ◽

Further Development

The modern biotechnologies of reproduction and cultivation of European catfish, African clary catfish and pangasius are considered. The development of biotechnology led to the development of a technology for its reproduction by the method of hormonal injection with preservation of life of the females and the euthanasia of the males for the collection of pure sperm. Further development of biotechnology is associated with the expansion of species diversity and the inclusion of African clary catfish and pangasius into aquaculture in warm waters.

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

FUDMA Journal of Sciences ◽

10.33003/fjs-2020-0402-119 ◽

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.

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Evaluation of the quality of chilled and frozen African catfish (Clarias gariepinus Burchell, 1822) fillets

Czech Journal of Food Sciences ◽

10.17221/330/2018-cjfs ◽

2019 ◽

Vol 37 (No. 3) ◽

pp. 186-191

Author(s):

Marlena Justyna Baryczka ◽

Iwona Chwastowska-Siwiecka ◽

Jacek Kondratowicz

Keyword(s):

Body Weight ◽

Moisture Content ◽

Total Protein ◽

Clarias Gariepinus ◽

Cooking Loss ◽

African Catfish ◽

Catfish Fillets ◽

Pre Treatment ◽

Water Holding

The quality of chilled and frozen African catfish fillets was compared. The experiment was performed on 20 individuals of Clarias gariepinus aged < 1 year, with estimated body weight of 1 kg. A total of 40 right and left fillets were subjected to pre-treatment. Chilled right fillets (20) and left fillets (20) stored for 8 months in the freezer were subjected to quantitative and qualitative laboratory analyses. Chilled African catfish fillets had a lower of moisture content, higher of total protein, fat and crude ash, and higher energy value than frozen samples. Chilled fillets had also higher water-holding capacity, lower cooking loss and higher tenderness.

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Effects of Dietary Doum Palm Fruit Powder on Growth, Antioxidant Capacity, Immune Response, and Disease Resistance of African Catfish, Clarias gariepinus (B.)

Animals ◽

10.3390/ani10081407 ◽

2020 ◽

Vol 10 (8) ◽

pp. 1407 ◽

Cited By ~ 4

Author(s):

Hanan. S. Al-Khalaifah ◽

Alshimaa A. Khalil ◽

Shimaa A. Amer ◽

Shimaa I. Shalaby ◽

Haitham A. Badr ◽

...

Keyword(s):

Immune Response ◽

Superoxide Dismutase ◽

Body Weight ◽

Disease Resistance ◽

Clarias Gariepinus ◽

Fish Growth ◽

African Catfish ◽

Dependent Manner ◽

Palm Fruit ◽

Fruit Powder

Application of herbal immune-stimulants for modulation of fish growth and immune response has received great interest during the past decades. With several pharmacological properties, Doum palm, Hyphaene thebaica (Mart.) is known to be a beneficial medicinal plant. The objective of this study was to investigate the effects of the dietary addition of doum palm fruit powder (DPFP) on growth performance, non-specific immune response, and antioxidant parameters of African catfish, Clarias gariepinus (B.). A total of 120 fish (average initial weight 60.50 ± 0.04 g) were randomly allocated to four groups (three replicates/group, 10 fish/aquarium); a basal diet without DPFP supplementation was used as a control, and three other diets were prepared by supplementing 5, 10, or 15 g kg−1 DPFP for a ten-week feeding period. Following ten weeks of feeding, the fish were challenged with Aeromonas hydrophila (as an immune challenge test), and mortalities were recorded. In comparison to the control diet, dietary DPFP significantly improved growth parameters, including final body weight, body weight gain (WG), specific growth rate (SGR), feed conversion ratio (FCR), and protein efficiency ratio (PER), along with an increase in the content of dry matter of the whole body, in a concentration-dependent manner. Moreover, the heights of intestinal villi, numbers of goblet cells, and intraepithelial lymphocytes (IEL) exhibited marked escalation in all parts of the intestine by increasing the level of DPFP, except for numbers of IEL in the proximal part. The decline in serum glucose, cholesterol, and triglyceride levels was prominent in DPFP10 and DPFP15 groups respective to the DPFP0 group. Furthermore, DPFP boosted the hepatic level of catalase (CAT) in the fish, in a dose-dependent manner; meanwhile, the activity of superoxide dismutase (SOD) and reduced glutathione (GSH) content were also augmented in DPFP10 and DPFP15 groups respective to the DPFP0 group. Dietary DPFP (DPFP15 followed by DPFP10 then DPFP5) led to a pronounced enhancement in the innate immune response (phagocytic percent and index, lysozyme activity, nitric oxide (NO) production, and sialoglycans, namely α 2,3-sialyltransferase and α 2,6-sialyltransferase content); however, the myeloperoxidase (MPO) activity was reduced. Significantly higher relative percentage survival (RPS, 88.56%) of the fish, following the A. hydrophila challenge, was observed for the DPFP15 group. We can suggest that DPFP can beneficially influence fish growth, intestinal histomorphology, hepatic levels of catalase (CAT), superoxide dismutase (SOD) activity and glutathione (GSH) content, immune response, and disease resistance against A. hydrophila challenge.

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Influence of feeding regimen on growth parameters of African Catfish (Clarias gariepinus, Burchell 1822)

Nigerian Journal of Animal Production ◽

10.51791/njap.v46i3.966 ◽

2019 ◽

Vol 46 (3) ◽

pp. 192-204

Author(s):

O. T. F. Abanikannda ◽

A. A. Jimoh ◽

K. O. Bakare ◽

S. A. Shitta ◽

Z. F. Shopeyin

Keyword(s):

Growth Rate ◽

Body Weight ◽

Standard Length ◽

Condition Factor ◽

Average Daily Gain ◽

Clarias Gariepinus ◽

African Catfish ◽

Total Length ◽

Final Weight ◽

Feeding Regimen

An experiment was conducted using 270 African catfish fingerlings to evaluate the effects ofdifferent feeding regimen on growth performance of the fish. The fish were hatched andreared to 12 weeks under similar condition before the commencement of the experiment thatlasted for 40 days. Feeding regimens included equally shared feed based on recommended of5% body weight, and equally spaced feed allocation at 6, 8 and 12 hourly intervals. Each ofthe three treatment groups comprised of six replicates of 15 fish per plastic tank. Body weight,and two linear measurements (total and standard length) were taken twice weekly on each ofthe fish in all the tanks and the respective length-weight relationship and condition factor (K)were computed. Weekly gain, final weight, average daily gain, absolute, relative, specific andmean growth rates for the three groups were evaluated and compared. Results showed that allparameters studied except final total length were significantly (P<.05) affected by feedingregimen. The coefficient of determination for all ANOVA had variable values for all growthparameter; Final Weight (83.11%), Absolute Growth Rate (79.19%), Final Total Length(61.30%), Final Standard Length (60.87%), Relative Growth Rate (38.68%), SpecificGrowth Rate (35.57%), Mean Growth Rate (32.23%) and Condition Factor (12.83%). The 6-hourly treatment group mostly had the highest values across all the parameters studied butwas not statistically different (P>.05) from the values obtained in the 8-hourly group.

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Induction and recovery from anaesthesia in fry of European catfish (Silurus glanis L.) exposed to clove oil

Agricultural Science and Technology ◽

10.15547/ast.2019.04.054 ◽

2019 ◽

Vol 11 (4) ◽

pp. 323-326

Author(s):

V. Krasteva ◽

A. Zaikov

Keyword(s):

Body Weight ◽

Body Length ◽

Clove Oil ◽

Silurus Glanis ◽

Laboratory Conditions ◽

European Catfish ◽

Recovery From Anesthesia ◽

Short Time

Abstract. The purpose of the study is to establish the efficacy of different concentrations of clove oil and the time needed for induction and recovery from anesthesia of European catfish (Silurus glanis L.) fry. The experiment was carried out in laboratory conditions with 50 specimens with body weight 1.11±0.25g and body length 5.45±0.60cm. For the aim of this paper the following five concentrations of clove oil are used: 0.01 ml.l-1, 0.02 ml.l-1, 0.03 ml.l-1, 0.04 ml.l-1 and 0.05 ml.l-1. At the lowest concentration (0.01ml.l-1) the effect is sedative and the fry do not reach the phase of complete immobilization. The application of 0.02 ml.l-1 concentration of clove oil is not beneficial for practical usage, with only 30% of the fish reaching phase 4 of anesthesia. At the highest concentrations (0.04 ml.l-1 and 0.05 ml.l-1) all of the fry were anesthetized for a short time, but the process of recovery was not successful for all of the fry. All of the fry reach phase of anesthesia and recovery without loses at 0.03 ml.l-1. This concentration is advisable for anesthesia of European catfish fry during different manipulations.

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The Effect of Body Weight on Fresh Sperm Movement Characteristics in African Catfish (Clarias gariepinus)

Journal of Animal and Veterinary Advances ◽

10.3923/javaa.2011.2215.2220 ◽

2011 ◽

Vol 10 (17) ◽

pp. 2215-2220

Author(s):

K. Noor Azlin ◽

W.E. Wan Khadij ◽

R.B. Abdullah

Keyword(s):

Body Weight ◽

Clarias Gariepinus ◽

African Catfish ◽

Movement Characteristics ◽

Sperm Movement

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Growth Response of Clarias Gariepinus (North African Catfish) Under Varying Feeding Rates

Sumerianz Journal of Biotechnology ◽

10.47752/sjb.311.113.117 ◽

2020 ◽

pp. 113-117

Author(s):

Ofonime Edet Afia ◽

David Oristeseyi Kolawole ◽

Gift Samuel David

Keyword(s):

Body Weight ◽

Growth Response ◽

Feeding Rate ◽

Clarias Gariepinus ◽

Fish Farming ◽

Quality Parameters ◽

African Catfish ◽

Feeding Rates ◽

Feed Conversion ◽

Commercial Feed

In fish farming, feeding rate is an important factor affecting the growth of fish, and thus determining the optimal feeding rate is important to the success of any aquaculture operation. This study which lasted for 99 days investigated the effect of varying feeding rates on the growth response of African catfish, Clarias gariepinus fingerlings. One hundred and eighty fingerlings were randomly distributed into nine experimental tanks giving 20 fingerlings per tank with an initial weight of 5.92±0.006 g. Three feeding rates were employed as treatments – 3%, 5%, and 7% of fresh body weight, with three replicates per treatment. The fishes were fed three times daily with commercial feed (Aller-aqua) of 42% crude protein. Growth and water quality parameters were measured fortnightly and feed ration adjusted according to the biomass in each tank. Results show that Final Mean Weight, Mean Weight Gain, Specific Growth Rate, Performance Index and Protein Efficiency Ratio were significantly higher (p<0.05) in fish fed 7%. However, Feed Conversion Ratio were better at 3% body weight (p<0.05). Based on the growth performance and feed efficiency data obtained, the study suggests the optimum feeding rate of 5% bw/day for African catfish, C. gariepinus fingerlings.

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