17α-methyltestosterone and Some Medicine Plants as Reproductive Controller Agents of Oreochromis niloticus

Mehrim, A. I.; Khalil, F. F.; Farrag, F. H.; Refaey, Mohamed M.

doi:10.3923/jbs.2019.407.417

Cited by 8 publications

(4 citation statements)

References 18 publications

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“…(2013) suggested 9 mg 17 MT/kg fish daily administration for 28 successive days to produce higher monosex fry for the same species. Better growth performance and feed conversion ratio were acquired while using a 60 mg MT/Kg diet for 28 days ( Al-Hakim et al., 2013 ; Mehrim et al., 2019 ). About 93.3% of males were successfully produced by feeding fish at 60 mg/kg 17 α-MT and their growth metrics were reported to be superior ( Jensi et al., 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Optimization of 17α-methyltestosterone dose to produce quality mono-sex Nile tilapia Oreochromis niloticus

Sarker¹,

Das²,

Chakraborty³

et al. 2022

Heliyon

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Section: Discussionmentioning

confidence: 99%

Optimization of 17α-methyltestosterone dose to produce quality mono-sex Nile tilapia Oreochromis niloticus

Sarker¹,

Das²,

Chakraborty³

et al. 2022

Heliyon

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“…Also, Lan et al (2009) isolated five steroidal saponins from the fruits of Tribulus terrestris. These natural compounds such as; tannins, flavonoids, alkaloids, steroids and terpenoids promote androgenic and anabolic processes as well as stimulation of digestion, immunity, and appetite and play an importance role in controlling unwanted reproduction in tilapia farms (Chakraborty et al, 2013;Mehrim et al, 2019).…”

Section: Chemical Analysis For Tribulus Terrestrismentioning

confidence: 99%

Effect of some Nutritional and Enviromental Factors on Production of Mono Sex Nile Tilapia (Oreochromis niloticus)

Sadek

Nady²,

Zied

2022

Journal of Animal and Poultry Production

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Two trials were conducted with Nile tilapia (Oreochromis niloticus) larvae and fry at the commercial fish hatchery in Fayoum Governorate during 2019. The first was conducted to study the effect of storage conditions for treated feeds with male hormone 17 α -methyltestosterone (17 α -MT), (light condition, store temperature. and time after preparation) on the rates of sex reversal, and growth performance. 5000 newly hatched fry were stocked in a hapa (2×1 m, and a water depth of 80 cm), and were fed with treated feed with 120 mg/kg (17α-MT) for 28 days. No significant difference among treated diets and the ability to sex-reverse fry. The highest sex reversal % was in the treated diets and refrigerated for use at 97.5% and prepared daily at 96.27%. The results of this trial indicate that the rates of male sexual transformation were affected by the method of preparing treated feed hormone, although this effect was limited. The second experiment was performed to study the effect of Tribulus terrestris powder on sexual transformation, compared to the male treated with 17α-MT in the same condition as the first experiment. A significant increase (P≤0.05) in percent male was observed with increasing Tribulus terrestris powder in the diets compared to control group. There are significant differences between treatments containing 17α-MT and the basal diet.The results of this trial refer to the recommendation that the Tribulus terrestris powder at 200 g/kg diet and 17α-MT at 150 mg/kg diet are the most effective for sex reversal in Nile tilapia larvae.

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“…Cultivating male monosexual tilapia has the advantage of the same growth rate and preventing unwanted spawning [10] 17α-methyltestosterone is a synthetic hormone that can induce the development of male tilapia seeds [11]. Providing a 60 mg MT/kg dosage in feed can enhance growth performance in monosexual fish [12,13]. MT exposure can enhance egg yolk production by enlarging follicle diameter and serum IOP Publishing doi:10.1088/1755-1315/1328/1/012021 2 11-ketotestosterone (11-KT) levels.…”

Section: Introductionmentioning

confidence: 99%

Effect of various local natural ingredients fortified in fish feed on the gonad histology and water quality of tilapia (Oreochromis niloticus)

Hariati,

Mahariawan,

Yuniarti

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The addition of natural ingredients fortified in fish feed was developed to enhance good formulation engineering. Currently, there is a need to improve follow-up research strategies for designed feed formulations using natural ingredients in tilapia farming. It is hoped that a sustainable and eco-friendly fish farming system will be improved. This study aimed to evaluate the effect of local natural ingredients fortified in fish feed on the gonad histology and water quality of tilapia (O. niloticus). Following these results, the histology test of tilapia showed that more than 50% of the gonad tended to be male in all treatments. This showed that the use of natural ingredients in the appropriate dosage in feed would affect the masculinization of tilapia. Furthermore, the specific growth rate (SGR) with the addition of natural ingredients to the feed showed results comparable to that of synthetic hormones. It can be concluded that the use of natural ingredients such as honey, cow testes, and Tribulus fortified in fish feed revealed a positive effect on the masculinization of tilapia and water quality levels in the fish farming system.

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17α-methyltestosterone and Some Medicine Plants as Reproductive Controller Agents of Oreochromis niloticus

Cited by 8 publications

References 18 publications

Optimization of 17α-methyltestosterone dose to produce quality mono-sex Nile tilapia Oreochromis niloticus

Optimization of 17α-methyltestosterone dose to produce quality mono-sex Nile tilapia Oreochromis niloticus

Effect of some Nutritional and Enviromental Factors on Production of Mono Sex Nile Tilapia (Oreochromis niloticus)

Effect of various local natural ingredients fortified in fish feed on the gonad histology and water quality of tilapia (Oreochromis niloticus)

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