African catfish (Clarias gariepinus Burchell, 1822). Thematic bibliography

Hrytsyniak, І.; Shvets, T.

doi:10.15407/fsu2017.04.128

Cited by 2 publications

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“…The present study confirmed that dietary inclusion of P.dactylifera seed powder is essential for broodstock fertility. Dietary inclusion of P.dactylifera affected positively some parameters of milt quality in C.gariepinus, such as milt count, percentage motility, milt volume and motility duration The observation that milt motility increases with volume of milt and the strong relationship between milt volume and percentage egg fertilization and hatchability in C. gariepinus agree with the findings of Lamia (1996) but disagree with the findings of Pardo-Carrasco et al, (2006) who evaluated the semen of Brycon amazonicus under induction with Carp pituitary Extract (CPE) and reported that volume increased without increasing sperm counts. Motility of the spermatozoans is the most commonly used indicator of milt quality since high motility is a prerequisite for fertilization and correlates strongly with fertilization success (Rurangwa et al, 2004).…”

Section: Histology Of the Testes Of C Gariepinus Fed Experimental Dietssupporting

confidence: 87%

Effects of Dietary Supplementation of Date palm (Phoenix dactylifera L.) Seed on Milt Quality of African Catfish (Clarias gariepinus) Broodstocks

Dada

Fagbohun

2018

J Agric Sciences

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Date palm (Phoenix dactylifera) was introduced into Nigeria in the early 8 th century by the Arab traders from north Africa, where it is traded in exchange with the dry leaves of Henna plant (Lawsonia inermins), a plant known to be widely used for body decoration by women in many parts of the world. Date fruits are highly valued delicacy among many communities in Nigeria and enjoy a great spiritual and cultural significance (FAO, 2003). Similarly Chao & Krueger (2007) reported that date palm tree has numerous usages and economic importance in ecological improvement of the deserts. Many studies have shown that antioxidants can ABSTRACT Purpose: The effects of Phoenix dactylifera seed powder on milt quality of Clarias gariepinus was investigated. The purpose of the research were to determine the effects of dietary supplementation of P. dactylifera seed meal on the milt quality of African catfish, C. gariepinus; and to examine the effects of the dietary supplementation of P. dactylifera seed meal on the histology of the testes. Research Method: Five diets with crude protein of 40% were formulated with different inclusion levels of 0, 0.5, 1.0, 1.5, 2.0g date palm/100g of diet. 75 male C. gariepinus broodstocks (327.26 ± 8.61g) were randomly distributed in triplicate into 15 concrete tanks at stocking density of 5 fish per tank for 70 days. Findings: Reproductive performance indices and milt quality parameters were determined at the end of the feeding trial. There was no significant differences (P<0.05) in the weight of testes, gonadosomatic index and weight gain in fish in all the experimental diets. The milt count (102.40 x 10 4 spz/ml ± 0.87) and motility duration (60.70s ± 0.13 seconds) were highest in fish fed diet PDSP 4 (1.5g date palm/100g diet) and PDSP 5 (2.0g date palm/100g). The percentage motility was highest in fish fed PDSP 5 at (2.0g date palm/100g diet). Research limitations: The limitation of this research was the unavailability of funds to extend this research in order to carry out more investigation using other culturable fish species. Value of the Research: The study revealed that dietary supplementation of P. dactylifera seed powder at 2.0g/100g diet significantly increased milt quality of C. gariepinus broodstocks.

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Section: Histology Of the Testes Of C Gariepinus Fed Experimental Dietssupporting

confidence: 87%

Effects of Dietary Supplementation of Date palm (Phoenix dactylifera L.) Seed on Milt Quality of African Catfish (Clarias gariepinus) Broodstocks

Dada

Fagbohun

2018

J Agric Sciences

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First experience of cultivating african catfish (Clarias gariepinus Burchell, 1822) under natural temperature conditions in water bodies of Polissiya of Ukraine

Zadorozhnii,

Bekh

2024

Ribogospod. nauka Ukr.

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Purpose. Establishing the possibility to cultivate African catfish (Clarias gariepinus) in ponds and pools under water temperature conditions typical for the Polissya region of Ukraine during the growing season. In particular, to compare the efficiency of cultivation in concrete pools and earthen ponds. Also, to compare the effectiveness of using floating and sinking feeds in ponds and pools. Methodology. The study, which lasted throughout the growing season, used African catfish seeds of industrial origin. The study was conducted at the educational, scientific, and production laboratory of fisheries of the National University of Life and Environmental Sciences of Ukraine. The individual weight of the fish seeds, from which four groups were formed, each consisting of 237 specimens, was 6.3 g ± 0.5 g. Experimental groups were formed based on cultivation conditions and feed type. Aller Aqua feeds of two types: floating “Primo Float” and sinking “Master” were used for feeding African catfish. Accordingly, sinking feeds were introduced into the diet of one group stocked in a pool and one stocked in a pond. Floating feeds were introduced into the diet of the other two experimental groups. Water supply was provided by gravity flow from the surface water of the accumulating water body. Findings. The study showed that in terms of survival rate, the pool method using floating feeds was more effective compared to the pond method, where the experimental group fed with sinking feed exhibited better survival. In terms of average individual weight, specimens grown in ponds exceeded those grown in pools. We believe this can be explained by the presence of natural food supply in ponds, which served as an additional source of nutrients for African catfish. The results of this study confirmed the possibility of cultivating African catfish in water temperature conditions typical of the water bodies in the Polissya region of Ukraine, despite wide fluctuations. However, in the case of cultivating African catfish weighing 6.3 g ± 0.5 g under water temperature conditions lower than optimal (24°C), the fish size may not reach marketable levels. In such cases, there is a need to use facilities with closed water supply systems for further rearing of catfish juveniles. Originality. For the first time, a comparison of the efficiency of African catfish (cultivation under the temperature regimes characteristic of water bodies in the Polissya region of Ukraine has been conducted. This comparison was made between concrete pools and earthen ponds, utilizing both floating and sinking feeds. The aim was to determine which cultivation method would result in the highest specific growth rate. Practical value. The results obtained during the study allow expanding technological methods for cultivating African catfish, confirming the possibility of its cultivating under the temperature regime characteristic of water bodies in the Polissiya region of Ukraine. Keywords: African catfish, Ukrainian Polissiya, sinking feeds, floating feeds, growth rate, earthen ponds, concrete pools, industrial aquaculture.

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African catfish (Clarias gariepinus Burchell, 1822). Thematic bibliography

Abstract: АФРИКАНСЬКИЙ (КЛАРІЄВИЙ) СОМ (CLARIAS GARIEPINUSBURCHELL УЗВ, басейни, фізіолого-біохімічні показники, культивування, відтворення.

Cited by 2 publications

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Effects of Dietary Supplementation of Date palm (Phoenix dactylifera L.) Seed on Milt Quality of African Catfish (Clarias gariepinus) Broodstocks

Effects of Dietary Supplementation of Date palm (Phoenix dactylifera L.) Seed on Milt Quality of African Catfish (Clarias gariepinus) Broodstocks

First experience of cultivating african catfish (Clarias gariepinus Burchell, 1822) under natural temperature conditions in water bodies of Polissiya of Ukraine

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