Effects of pituitary extract, ovaprim, and bitter leaf (Vernonia amygdalina) on the histopathology of African catfish (Clarias gariepinus)

Ajayi, Blessing B.; Ogunsola, John; Olatoye, Olufemi; Antia, R. E.; Agbede, S. A.

doi:10.1016/j.aaf.2018.10.001

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Physiological Methods With Killing Of Males1

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Cited by 2 publications

(2 citation statements)

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“…Several studies highlighted that gonads can develop well-regulated hormones ( Zohar et al, 2010;Ajayi et al, 2018). The biosynthesis of androgens takes place continuously in the Leydig cells, where the biosynthesis is regulated by the hypothalamus-hypofisatesticle (gonad) axis (Ohga et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Gonad-stimulating potential of laserpuncture induction on the male African Sharptooth catfish (Clarias gariepinus)

Hariani¹

2021

Egypt. J. of Aquatic Biolo. and Fish.

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Section: Discussionmentioning

confidence: 99%

Gonad-stimulating potential of laserpuncture induction on the male African Sharptooth catfish (Clarias gariepinus)

Hariani¹

2021

Egypt. J. of Aquatic Biolo. and Fish.

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“…Before the spawning process, fish have being kept for 2 days in separate tanks without feeding. After injecting the male broodfish with the medicine that stimulate the maturation of gonads [14][15][16], before the eggs are taken away from the mature females, the male is killed, his abdominal cavity is opened and a part or all of the gonad with developed milt is extracted (Figure 1). Next, the gonad is cut or forced through a sieve in order to obtain seminal fluid, which is then diluted with water and mixed with the eggs for fertilization.…”

Section: Physiological Methods With Killing Of Malesmentioning

confidence: 99%

Intravital method for the obtaining genital products from the male african catfish

Tkacheva

Kuzov

Polienko³

et al. 2020

E3S Web Conf.

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In industrial aquaculture, spawning of t*he Clarias catfish (lat. Clarias gariepinus) is complicated by the fact that it is impossible to obtain sperm due to the physiology of the fish. Fish farmers deal with the problem in different ways. They have to expect natural spawning, do a resection of the gonads or kill and dissect the fish (slaughter). We would like to propose a method for collecting sperm through the puncture of the gonads of the fish. The method is intended to save male broodstock. If the weight of the fish does not exceed 2 kg, the procedure can be performed any anesthesia. There is no need for the fish to be separated from the rest of the broodstock after the surgery. 43 of the 65 stimulated one-year-old males with an average weight of 1250 g have given motile sperm with a volume of 1.5 ± 0.1 ml.

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Effects of pituitary extract, ovaprim, and bitter leaf (Vernonia amygdalina) on the histopathology of African catfish (Clarias gariepinus)

Cited by 2 publications

References 7 publications

Gonad-stimulating potential of laserpuncture induction on the male African Sharptooth catfish (Clarias gariepinus)

Gonad-stimulating potential of laserpuncture induction on the male African Sharptooth catfish (Clarias gariepinus)

Intravital method for the obtaining genital products from the male african catfish

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