Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus)
Abstract The present study aimed to produce a monosex population of all male Nile tilapia (Oreochromis spp.) using 17α-methyl testosterone and common carp testes (as a source of natural androgen). Trial was conducted into two consecutive phases, the first was fry (4-5 days old)administration with ne...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
2023-05-01
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| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100462&lng=en&tlng=en |
| _version_ | 1797816822764929024 |
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| author | F. Asad S. Naz T. Ali Y. Gul R. Jamal Z. Shaheen M. Tasadaq A. Nadeem N. Anwar N. Batool S. Bano |
| author_facet | F. Asad S. Naz T. Ali Y. Gul R. Jamal Z. Shaheen M. Tasadaq A. Nadeem N. Anwar N. Batool S. Bano |
| author_sort | F. Asad |
| collection | DOAJ |
| description | Abstract The present study aimed to produce a monosex population of all male Nile tilapia (Oreochromis spp.) using 17α-methyl testosterone and common carp testes (as a source of natural androgen). Trial was conducted into two consecutive phases, the first was fry (4-5 days old)administration with negative control (without hormone) and positive control (with hormone) feed viz., MT1:60mg/kg, MT2:70mg/kg (17α-MT), carp testis CT1:70% and CT2:80% for 30 days to reverse the sex of male fish and the second phase was nursing the fingerlings for two months on control diet (32% Crude protein).Results revealed a significant growth rate (P<0.05) in the control group where final weight (4.8±0.34ab) and weight gained was recorded as 0.66±0.03ac. In proximate chemical composition of body meat, CT2 treatment showed maximum retention of crude protein, crude fat, and ash whereas dry matter showed maximum retention in MT2 and CT1 treatments. Morphological and histological examination revealed significant difference (p<0.05) in phenotypic males of Nile tilapia fed with the highest percent in MT-treated diet (MT2) of 95±0.58a while MT1, CT2 and CT1 had males of 85±6.0b, 70±5.0b and 65±6.5b, respectively. It was concluded that synthetic androgen (17αMT) was more effective for masculinization but natural androgen scan be an alternative method to produce male tilapia population in an environment-friendly manner as they are inexpensive, eco-friendly, and radially available. These results suggested that synthetic and natural androgen supplementation in the diet plays a significant role in improving growth performance and body composition. |
| first_indexed | 2024-03-13T08:43:25Z |
| format | Article |
| id | doaj.art-be429282bd694071b84a987526fd414a |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-03-13T08:43:25Z |
| publishDate | 2023-05-01 |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-be429282bd694071b84a987526fd414a2023-05-30T07:39:14ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-43752023-05-018410.1590/1519-6984.272413Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus)F. AsadS. Nazhttps://orcid.org/0000-0002-3603-9850T. Alihttps://orcid.org/0000-0002-9015-1421Y. Gulhttps://orcid.org/0000-0003-1011-539XR. Jamalhttps://orcid.org/0009-0007-2156-850XZ. Shaheenhttps://orcid.org/0000-0002-8333-5740M. Tasadaqhttps://orcid.org/0000-0002-3236-3522A. Nadeemhttps://orcid.org/0000-0003-1391-8913N. Anwarhttps://orcid.org/0009-0006-7720-7626N. Batoolhttps://orcid.org/0009-0004-5250-1111S. Banohttps://orcid.org/0000-0002-8579-2216Abstract The present study aimed to produce a monosex population of all male Nile tilapia (Oreochromis spp.) using 17α-methyl testosterone and common carp testes (as a source of natural androgen). Trial was conducted into two consecutive phases, the first was fry (4-5 days old)administration with negative control (without hormone) and positive control (with hormone) feed viz., MT1:60mg/kg, MT2:70mg/kg (17α-MT), carp testis CT1:70% and CT2:80% for 30 days to reverse the sex of male fish and the second phase was nursing the fingerlings for two months on control diet (32% Crude protein).Results revealed a significant growth rate (P<0.05) in the control group where final weight (4.8±0.34ab) and weight gained was recorded as 0.66±0.03ac. In proximate chemical composition of body meat, CT2 treatment showed maximum retention of crude protein, crude fat, and ash whereas dry matter showed maximum retention in MT2 and CT1 treatments. Morphological and histological examination revealed significant difference (p<0.05) in phenotypic males of Nile tilapia fed with the highest percent in MT-treated diet (MT2) of 95±0.58a while MT1, CT2 and CT1 had males of 85±6.0b, 70±5.0b and 65±6.5b, respectively. It was concluded that synthetic androgen (17αMT) was more effective for masculinization but natural androgen scan be an alternative method to produce male tilapia population in an environment-friendly manner as they are inexpensive, eco-friendly, and radially available. These results suggested that synthetic and natural androgen supplementation in the diet plays a significant role in improving growth performance and body composition.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100462&lng=en&tlng=encommon carp testesexotic fishgrowth performancemasculinization and 17α-methyl testosterone |
| spellingShingle | F. Asad S. Naz T. Ali Y. Gul R. Jamal Z. Shaheen M. Tasadaq A. Nadeem N. Anwar N. Batool S. Bano Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus) Brazilian Journal of Biology common carp testes exotic fish growth performance masculinization and 17α-methyl testosterone |
| title | Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus) |
| title_full | Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus) |
| title_fullStr | Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus) |
| title_full_unstemmed | Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus) |
| title_short | Effect of natural and synthetic androgen hormone on sex reversal of Nile Tilapia (Oreochromis niloticus) |
| title_sort | effect of natural and synthetic androgen hormone on sex reversal of nile tilapia oreochromis niloticus |
| topic | common carp testes exotic fish growth performance masculinization and 17α-methyl testosterone |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842024000100462&lng=en&tlng=en |
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