Studies on the effect of different food items on the survival of hatchlings of &lt;i&gt;Clarias anguillaris&lt;/i&gt;

Nwuba, Lucy Afulenu; Aguigwo, J. N.

doi:10.4314/jas.v17i2.19924

Cited by 6 publications

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“…The best performance exhibited by hybrid catfish hatchlings fed a mixture of both zooplankton and artificially compounded feed indicate that mixing artificially compounded feed and live zooplankton in the diet of the developmental stages of the hybrid catfish would be a better practice in fish farm practice. This supports the observations of Nwuba and Aguigwo (2002). According to Smith (1989), the maintenance cost of the animal (fish) has priority and must be met before any energy is available for tissue synthesis and growth.…”

Section: Discussionsupporting

confidence: 70%

“…According to Piggot and Tucker (1989), fish can swallow live prey of much larger size than dry formulated feed due to the elastic nature of live feed. Nwuba and Aguigwo (2002), however, reported that any single diet of either artificially compounded feed only or zooplankton only, could not sustain Clarias anguillaris hatchlings beyond a certain age but that addition of supplemental feed to live food offers better growth to growing hatchlings of the fish species. This paper investigates the effect of different food items on the growth response of the developmental stages of the catfish hybrid, Heterobranchus bidorsalis ♂ x Clarias gariepinus ♀.…”

Section: Introductionmentioning

confidence: 99%

“…A major pre-requisite for successful fish farming enterprise is a reliable and consistent source of fish seeds (fingerlings) of the commercially important species (Nwuba and Aguigwo, 2002). The surest and most reliable source of supply is to produce the fingerlings under a controlled system, usually in a hatchery.…”

Section: Introductionmentioning

confidence: 99%

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Effect Of Different Dietary Items On The Growth Of African Catfish Hybrid Heterobranchus Bidorsalis (♂) X Clarias Gariepinus

Ezechi

Nwuba

2008

Anim. Res. Int.

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This paper describes the growth response of the developmental stages of hybrid cat ish resulting rom the crossing of Heterobranchus bidorsalis (male) and Clarias gariepinus (female), fed with different feed rations. Hatchlings of the hybrid catfish were cultured in plastic aquaria set up at the fish hatchery complex, Nnamdi Azikiwe University, Awka. The hatchlings were fed and observed for 91 days. Different food items such as artificially compounded feed, zooplankton / live organisms Moina sp and Brachionus sp, and a mixture of zooplankton (Moina sp and Brachionus sp) and artificially compounded feed were administered. The mixture gave the best result with a mean weight o 7 92g ± 2.73g fo lowed by those fed Moina sp (1.93g ± 0.27) and Brachionus sp (1.80g ± 0.32) respectively. Hatchlings fed only artificially compounded feed exhibited the poorest growth. A mixture of live food organisms and art cially compounded feed is thus recommended for better growth response of catfish hybrid, (H. bidorsalis ♂ x C. gariepinus ♀). f f , f . , l ifi r

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Section: Discussionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

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Effect Of Different Dietary Items On The Growth Of African Catfish Hybrid Heterobranchus Bidorsalis (♂) X Clarias Gariepinus

Ezechi

Nwuba

2008

Anim. Res. Int.

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“…Richter and Van der Hurk (1982) reported that the problem of inadequate supply of fish seed can only be solved through induced breeding by the application of various inducement materials. Various types of fishes have been induced to spawn, using various hormonal materials (Nwadukwe, 1993;Eyo, 1997Eyo, , 1998Eyo, , 2000Nwuba and Aguigwo, 2002). Some of these hormonal materials (natural and synthetic) include cHCG (Eyo, 1997;1998), HCG (Eyo, 2002); clomipgene citrate (Aguigwo, 1991), pituitary extract (Janssen, 1985;Haniffa et al, 2000) and Ovaprim (Manosroi et al, 2004;AbolMunafi et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Induced propagation of African clariid catfish, Heterobranchus bidorsalis (Geoffrey Saint Hillarie, 1809) using synthetic and homoplastic hormones

Nwokoye¹,

Charles²,

Nwuba³

et al. 2007

Afr. J. Biotechnol.

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Induced spawning of African giant catfish (Heterobranchus bidorsalis) was successfully carried out using synthetic hormone (Ovaprim) and natural hormone (homoplastic hormone-pituitary extract from H. bidorsalis). The study which was carried out at Aquafish Farm, Ihiala, Anambra State, Nigeria, lasted 70 days (May to July). Sixty gravid females and twenty mature males of H. bidorsalis (weight range of 310 to 550 g) were used for the study. In all, 10 trials were carried out with a control. The results showed that ovaprim performed significantly better (P < 0.01) in almost all the parameters investigated. The two hormonal materials gave slightly different results in terms of pre and post hormonal induced spawning mean somatic weight loss of 423.83 ± 14.19 g and 446.00 ± 13.37 g, mean number of dead eggs of 396.10 ± 19.15 and 194.90 ± 11.00, hatchability of 9,180.13 ± 343.37 and 11,162.27 ± 362.00 hatched larvae, 35.80 ± 1.11 and 12.37 ± 1.54 deformed larvae, and 99.61 and 99.88% survival were recorded respectively for homoplastic hormone and ovaprim, respectively. Comparative cost benefit analysis showed that ovaprim which recorded better results, was also relatively cheaper. Ovaprim worth N3467.00 was used for induced breeding of H. bidorsalis with combined body weight of 13.38 kg while pituitary hormone was extracted from N 6350.00 worth of H. bidorsalis and used for induced breeding of gravid H. bidorsalis with combined body weight of 12.72 kg. Because of its relatively cheap cost, ease of handling and better survival of hatchlings from H. bidorsalis, ovaprim is highly recommended for hatchery users.

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“…Richter and Van der Hurk [4] reported that the problem of inadequate supply of fish seed can only be solved through induced breeding by the application of various inducement materials. Various types of fishes have been induced to spawn, using various hormonal materials [5,6,7,8]. Some of these spawning agents are either difficult to quantify, ineffective or of short shelf life, and for that, many breeders are reluctant to use them in field conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Doses of Ovulin Hormone Suspended in Saline on the Induced Breeding Performance of African Catfishes Clarias anguillaris and Clarias gariepinus in Sokoto, Nigeria

Maradun¹,

Argungu

Abubakar

et al. 2019

AJFAR

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A study on the effect of different doses of Ovulin hormone suspended in saline on the breeding performance of Clarias anguillaris and Clarias gariepinus was carried out. The experiment was conducted in a 2x5 factorial experiment in a Completely Randomized Design at the Hatchery Unit of the Department of Fisheries and Aquaculture, Usmanu Danfodiyo University, Sokoto. Species and hormone dilutions constituted the factors with specie having 2 levels (C. anguillaris and C. gariepinus) and Ovulin suspended in saline at 5 levels (0%, 25%, 50%, 75% and 100%). The result showed that species levels did not significantly (P>0.05) affect the breeding performance in all the breeding performance parameters observed. However, fertilization rate, hatching rate and survival rate were significantly affected (P<0.05) by different levels of Ovulin suspended in saline, but did not have significant influence (P>0.05) on egg weight, spawning fecundity and relative fecundity. It could be concluded from this study that Ovulin suspended in saline can have significant influence on the breeding performance of African catfish.

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Studies on the effect of different food items on the survival of hatchlings of <i>Clarias anguillaris</i>

Cited by 6 publications

References 0 publications

Effect Of Different Dietary Items On The Growth Of African Catfish Hybrid Heterobranchus Bidorsalis (♂) X Clarias Gariepinus

Effect Of Different Dietary Items On The Growth Of African Catfish Hybrid Heterobranchus Bidorsalis (♂) X Clarias Gariepinus

Induced propagation of African clariid catfish, Heterobranchus bidorsalis (Geoffrey Saint Hillarie, 1809) using synthetic and homoplastic hormones

Effect of Different Doses of Ovulin Hormone Suspended in Saline on the Induced Breeding Performance of African Catfishes Clarias anguillaris and Clarias gariepinus in Sokoto, Nigeria

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