Induced Breeding of African Mud Catfish, Clarias gariepinus (Burchell 1822), using Different Doses of Normal Saline Diluted Ovaprim

Ok, Olumuji; Mk, Mustapha

doi:10.4172/2155-9546.1000133

Cited by 11 publications

(4 citation statements)

References 7 publications

(7 reference statements)

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“…The weight of the broodstock in this study was in agreement with the findings of Olumuji and Mustapha (2012), who reported that C. gariepinus became mature from 200 g body weight. The highest number of hatchlings (539.67) recorded in the latency period of 13 hours may be due to the weight of the female (766.67 g) in line with Viveen et al (1985) who stated that larger females contain more eggs.…”

Section: Discussionsupporting

confidence: 92%

“…Artificial propagation involves human intervention in the process of natural propagation. Artificial propagation is the most promising and reliable way of ensuring the availability of good quality fish seed all year round and the sustainability of the aquaculture industry (Olumuji and Mustapha 2012). The success of artificial propagation of C. gariepinus through induced breeding under controlled environmental conditions is mostly dependent on the latency period, humidity and temperature.…”

Section: Introductionmentioning

confidence: 99%

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Effects of different latency periods on fingerlings production using Clarias gariepinus (African mud catfish)

Audu,

Onyia,

Onyia

2023

Glo. J. Fish. Sci.

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The research was carried out in the Fish Hatchery of the Department of Fisheries, Teaching and Research Farm, Modibbo Adama University. Clarias gariepinus belongs to the family Clariidae. The latency period had been demonstrated to affect fingerling production in C. gariepinus. Fifteen (15) gravid broodstock females weighing 367 to 1000 g and males of 800 to 1200 g were used at different latency periods of 9, 11, 13, 15 and 17 hours designated D1, D2, D3, D4 and D5. Three replicates of the female broodstock were injected with 0.5 ml Ovaprim for each latency period. The number of 1 g of eggs from each treatment was D1 (847), D2 (705), D3 (847), D4 (692) and D5 (847). Percentage fertilization was highest in 11, 13 and 15 hours latency periods (99.19%, 97.66% and 99.33%) respectively; and were significantly different (p<0.05). Percentage hatchability was highest in 13 hours latency period 63.73% and the least was in 17 hours latency period (1.99%). Unhatched eggs were higher in a latency period of 17 hours (5612). Number of hatchlings was highest in latency period of 13 hours. The highest percentage survival was in a latency period of 11 hours. Any attempt to improve fingerling production in C. gariepinus should consider the effect of the latency period in relation to weight. After three weeks of indoor incubation, a latency period of 15 hours showed better weight gain than others. The best latency period achieved in this study was 11 hours.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effects of different latency periods on fingerlings production using Clarias gariepinus (African mud catfish)

Audu,

Onyia,

Onyia

2023

Glo. J. Fish. Sci.

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“…Accordingly, given that the basic conditions for hormone-induced artificial insemination can be established using Ovaprim R , we can reasonably expect that hormoneinduced reproduction can be achieved in sharks. Compared with the development of hormone-induced artificial insemination technology in other fish species, the research reported herein is in its infancy; however, the findings of the present study, which to the best of our knowledge, is the first to have demonstrated successful hormone-induced reproduction in sharks, can serve to guide the direction of further related studies (Nandeesha et al, 1990;Khan et al, 2006;Brzoska and Adamek, 2008;Olumuji and Mustapha, 2012;Dhara and Saha, 2013). Considering the importance of hormone-induced reproduction techniques in the ex situ conservation of wild sharks, we believe that the findings of the present study will make a potentially important contribution to the conservation of endangered shark species.…”

Section: Necessity and Possibility Of Ovaprim R Usage For Hormone-indmentioning

confidence: 75%

Use of Synthetic Salmon GnRH and Domperidone (Ovaprim®) in Sharks: Preparation for ex situ Conservation

et al. 2020

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Shark populations are constantly decreasing owing to environmental destruction and overfishing; thus, sharks are now at a risk of extinction, with 27.9% of shark species classified as endangered on the International Union for Conservation of Nature’s Red List. Sharks are apex predators and a keystone species in balancing the marine food chain; their extinction will create an imbalance of the entire marine ecosystem. Assisted reproductive technology is the last resort for protecting animals facing severe extinction. Here, as a proactive effort toward building a hormone-induced artificial insemination protocol for endangered wild sharks, we identified the possibility of germ cell maturation by administration of Ovaprim®, a commercially produced synthetic salmon gonadotropin-releasing hormone, and calculated its optimum dosage and injection timing. The experiment was conducted on two shark species—Triakis scyllium and Carcharhinus longimanus. We found that intramuscular injections of 0.2 mL/kg of Ovaprim® for male T. scyllium and C. longimanus, 0.2 mL/kg + 0.5 mL/kg at a 24 h interval for female T. scyllium, and 0.2 mL/kg + 0.2 mL/kg or 0.2 mL/kg + 0.3 mL/kg at a 24 h interval for female C. longimanus were optimal dose protocols. These doses effectively induced the maturation and ovulation of oocytes and the release of semen. Our results confirm that Ovaprim® is a suitable tool for shark hormone-induced artificial insemination and indicate that this method may enable the conservation of the endangered shark species.

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“…Fertilized eggs were quickly rinsed with more saline water. The eggs were spread in single layers on a suspended nylon mesh net (kakabans) in the shape of trays immersed below water of about 15cm depth in a flow -through system with 0.2 l / min flow rate for aeration and removal of metabolites during incubation (Olumuji and Mustapha 2012).…”

Section: Methodsmentioning

confidence: 99%

FEMALE BROODSTOCK SIZE AND MATERNAL EFFECTS ON PROGENY OF Clarias gariepinus (BURCHELL 1822)

EGWENOMHE,

OTUTU

2023

AJHSE

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Catfish farmers have been enduring having to spawn with very big females at high cost avoiding medium and small sizes. The relationship between female broodstock weight and the growth rate of progeny has been a major concern among catfish producers. To examine the impact of different female broodstock sizes on the reaction to growth of the fish seed, induced breeding of the study fish was done. The experiment was designed a completely randomized design (CRD) made of three treatments replicated three times. The treatment were three categories of weight of broodstocks as Treatment I (1000g (Treatment I or Small size), Treatment II (1500g or Medium size) and Treatment III (2500g or Large size). There was no significant fluctuation in the physico-chemical parameters of the water. There was no significant difference in the fry survival among Treatments (P>0.05). The maternal effect on growth of the study fish was 10.5 weeks of culture as Treatment 11 fingerlings then grew fastest. At the end of 40 weeks culture period there was significant difference (P<0.05) in the final weight of the table fish (1231.67 g, 1156.67g, and 1006.67g, for Treatment 11, Treatment 111, and Treatment 1, respectively). Overall, the results of these growth evaluations showed that the selected group had improved growth performance. Medium sized female broodstock can therefore deliver substantial genetic improvements in induced breeding of the study fish.

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Induced Breeding of African Mud Catfish, Clarias gariepinus (Burchell 1822), using Different Doses of Normal Saline Diluted Ovaprim

Cited by 11 publications

References 7 publications

Effects of different latency periods on fingerlings production using Clarias gariepinus (African mud catfish)

Effects of different latency periods on fingerlings production using Clarias gariepinus (African mud catfish)

Use of Synthetic Salmon GnRH and Domperidone (Ovaprim®) in Sharks: Preparation for ex situ Conservation

FEMALE BROODSTOCK SIZE AND MATERNAL EFFECTS ON PROGENY OF Clarias gariepinus (BURCHELL 1822)

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