Reproduction, growth, health control and aquacultural potential of the African catfish, Clarias gariepinus (Burchell 1822)

Huisman, E.A.; Richter, C.J.J.

doi:10.1016/0044-8486(87)90057-3

Cited by 101 publications

(62 citation statements)

References 36 publications

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“…The availability of gametes throughout the year is important to ensure a constant supply of fish. In captivity (25°C; 12h light per day), C. gariepinus gametogenesis is continuous once sexual maturity is reached (Huisman and Richter, 1987). However, whereas females can be stripped of eggs after treatments with carp pituitary extracts (cPE; Hogendoorn, 1979) or human Chorionic Gonadotropin (hCG; Eding et al, 1982), spermiation and male reproductive behavior do not take place spontaneously (Van Oordt et al, 1987), even after hormonal therapy.…”

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confidence: 99%

Effect of semen extenders on the motility and viability of stored African Catfish (Clarias gariepinus) spermatozoa

Adeyemo¹,

Adeyemo²,

Oyeyemi³

et al. 2009

Journal of Applied Sciences and Environmental Management

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This study assessed the effects of common extenders and diluents on the spermatozoa of African catfish (Clarias gariepinus), with the intent of obtaining a semen preservation protocol that can serve as a means of making fingerlings available to fish farmers all year round. Semen samples (milt) were pooled from mature broodstock males and pre-extension qualities were evaluated. Egg yolk, tomato juice and sodium citrate buffers were combined in four different trials and used to preserve obtained semen at temperatures of 5°C and -40°C for 8 days and 4 weeks respectively in different trials. Motility indices of extended, preserved, refrigerated and frozen semen were used to analyze the effect of the various combinations. Forward, progressive and rectilinear motion was employed as a significant measurement of the livability of extended sperm cells and the efficacy of the extender solution. The result of the study showed that the buffer (sodium citrate) on its own performed excellently well (sperm motility was 85%) in enhancing survival within the first 24-48 hours post extension; Semen extended with 20% tomato juice gave the best survival rate when stored at 5°C, because the sperm cells were still viable by day 6 postextension. Extender containing 20% egg yolk gave 70% motility while that containing 10% egg yolk mixed with 10% tomato juice gave 60% motility. However, motility decreased progressively as the period of storage increased. The results of the effect of freezing (at -40°C) on motility revealed that no motility was observed in all the cryopreserved trials except the sample containing 10% egg yolk and 10% tomato juice, which recorded 10% post-thaw motility. @JASEM

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confidence: 99%

Effect of semen extenders on the motility and viability of stored African Catfish (Clarias gariepinus) spermatozoa

Adeyemo¹,

Adeyemo²,

Oyeyemi³

et al. 2009

Journal of Applied Sciences and Environmental Management

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“…The reduction of their number seems justified if it does not negatively affect the reproduction results. The African catfish (Clarias gariepinus) -a valuable species with a well-grounded position in European aquaculture (Huisman and Richter, 1987) is highly sensitive to stress. Therefore it is advisable to reduce the number of manipulations associated with ovulation stimulation in this species.…”

mentioning

confidence: 99%

Artificial propagation of African catfish (Clarias gariepinus): the application of a single dose of pellets containing D-Ala6,Pro9NEt-mGnRH and dopamine inhibitor metoclopramide

Brzuska¹

2004

Czech J. Anim. Sci.

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The satisfactory results of ovulation stimulation with Ovopel observed in various fish species (see a review in Brzuska, 2001) and numerous merits of this preparation (i.e. the possibility of precise dosing without weighing the stimulator, the simple method of its preparation for the treatment of fish, the elimination of an additional injection of dopamine receptor blocker, and the possibility of repeated application a�er a short interval if no ovulation occurs) distinctly show its high value. Ovopel contains a mammalian GnRH analogue, D-Ala 6 ,Pro 9 NEtmGnRH-a and water-soluble dopamine receptor antagonist -metoclopramide. The concentrations of D-Ala 6 ,Pro 9 NEt-mGnRH and metoclopramide are 18-20 µg/pellet and 8-10 mg per pellet, respectively (Horváth et al., 1997). Since the preparation was developed for Cyprinidae and the induced reproduction of this family is more effective when the ovulation stimulation is performed with two doses of carp pituitary, Horváth et al. (1997) recommended applying two doses of Ovopel.The results of studies conducted on European catfish (Silurus glanis L.) show that in the case of Ovopel the two doses (i.e. 1/5 pellet/kg body weight as the priming dose and 1 pellet/kg as the resolving dose) are not necessary if the stimulation is carried out during the season of natural spawning and the spawners are in a good reproductive condition. With the application of one dose of Ovopel (1 pellet/kg body weight) the results of reproduction were satisfactory (Brzuska, 2003).The effects of ovulation stimulated in African catfish (Clarias gariepinus) with two doses (1/5 + 1 pellet/kg) or one dose (1 pellet/kg) of Ovopel show that the differences in the weight of eggs and their quality (expressed by fertilization percentage and by the percentage of living embryos after 24-hour incubation) between the groups treated with the above doses were statistically insignificant (Brzuska et al., 1998) Ovopel -a preparation that contains a mammalian GnRH analogue D-Ala 6 ,Pro 9 NEt-mGnRH (1 pellet/kg body weight) and dopamine receptor antagonist metoclopramide (10 mg/kg) being used as ovulation stimulators. The application of Ovopel induced the statistically significantly (P ≤ 0.01) higher weight of eggs per kg female body weight and the statistically significantly (P ≤ 0.05) higher quality of eggs a�er 24 h incubation in comparison with the effects of hypophysation. No effect of the experiment on the weight or quality of obtained eggs was determined while the interaction between the experiment and the ovulation stimulator was statistically significant (P ≤ 0.05) with respect to the percentage of egg fertilization. Statistically significant (P ≤ 0.05) correlation was found between the percentage of egg fertilization and that of living embryos, the determined correlation coefficient being higher a�er the application of Ovopel than a�er the carp pituitary homogenate.

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“…It is widely cultured in freshwater ponds because of their easiness in reproduction, high growth rate, tolerance to high densities culture conditions, resistance to diseases, excellent flesh quality and ability to accept a wide variety of feed [15][16][17]19]. The technics culture for the full life cycle of African catfish has been well-established and the global production of this species has been increased from 11.8 tons in 2000 to 517.4 tons in 2010 [20].…”

Section: Introductionmentioning

confidence: 99%

“…The technics culture for the full life cycle of African catfish has been well-established and the global production of this species has been increased from 11.8 tons in 2000 to 517.4 tons in 2010 [20]. However, its intensive culture is quite limited because of the high operational cost due to the high protein commercial diets which increased feed cost [19,21]. The economically feasible catfish farming can be achieved when it is based on costeffective feed compound of locally available agricultural by-products [17,22,23].…”

Section: Introductionmentioning

confidence: 99%

Growth Performance, Feed Utilization and Body Composition of Clarias gariepinus (Burchell 1822) Fed Marine Fish Viscera-based-diet in Earthen Ponds

Oké¹,

Abou²,

Adité³

et al. 2016

Fish Aquac J

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A 90-days experiment was conducted to study the effect of replacement of fishmeal (FM) with marine fish viscera (MFV) meal on growth performance, body composition and production of Clarias gariepinus fingerlings (mean weight 11.3 ± 0.1 g). Diets were three isonitrogenous (43% crude protein) and isoenergetic (20 KJ/g) diets containing 0% (D0), 30% (D30) and 50% (D50) of MFV, as FM substitute. Diet D0, without MFV, acted as a control. All these diets were compared to the commercial diet coppens developed for C. gariepinus. No significantly differences were found in final weight (range: 220.94-234.1 g), weight gain (range: 1937.2-1971.7%), specific growth rate (range: 3.30-3.37%/day), protein efficiency ratio (range: 1.93-2.09) and annual production (range: 378.3-415.0 kg/are/year) of fish fed coppens diet, D0 and D30 (p>0.05). Fish fed D50 showed significantly lower growth and feed utilization performances (p˂0.05). Moisture and crude protein were similar among dietary treatments (p>0.05). Lipid deposition in fish significantly increased with MFV level in diets, whereas ash content decreased (p˂0.05).The study indicates that MFV meal can be used up to 30% in formulation fish feed for promotion of Clarias gariepinus rearing in rural areas.

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Reproduction, growth, health control and aquacultural potential of the African catfish, Clarias gariepinus (Burchell 1822)

Cited by 101 publications

References 36 publications

Effect of semen extenders on the motility and viability of stored African Catfish (Clarias gariepinus) spermatozoa

Effect of semen extenders on the motility and viability of stored African Catfish (Clarias gariepinus) spermatozoa

Artificial propagation of African catfish (Clarias gariepinus): the application of a single dose of pellets containing D-Ala6,Pro9NEt-mGnRH and dopamine inhibitor metoclopramide

Growth Performance, Feed Utilization and Body Composition of Clarias gariepinus (Burchell 1822) Fed Marine Fish Viscera-based-diet in Earthen Ponds

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