Hormonal profile and reproductive parameters of pre-vitellogenic mozambique tilapia (oreochromis mossambicus) on pawpaw (carica papaya) seed meal

Simple item page
dc.contributor.authorOmeje, Victor Okonkwoen_ZA
dc.contributor.authorLambrechts, Heleten_ZA
dc.contributor.authorBrink, Danieen_ZA
dc.date.accessioned2021-10-19T12:47:22Z
dc.date.available2021-10-19T12:47:22Z
dc.date.issued2019-06-15
dc.descriptionCITATION: Omeje, V. O., Lambrechts, H. & Brink, D. 2019. Hormonal profile and reproductive parameters of pre-vitellogenic mozambique tilapia (oreochromis mossambicus) on pawpaw (carica papaya) seed meal. Journal of Agricultural Science, 11(2):524-532, doi:10.5539/jas.v11n2p524.
dc.descriptionThe original publication is available at https://www.ccsenet.org/journal/index.php/jas
dc.description.abstractThe use of phytochemicals to control precocious maturation and indiscriminate spawning among tilapia species is an important issue in aquaculture. This study investigated the influence of pawpaw (Carica papaya) seed meal on the reproductive performance, and the sex hormone profile of sexually immature Mozambique tilapia (Oreochromis mossambicus). Pawpaw seed meal (PSM) were included in a tilapia commercial diet (basal diet) at an inclusion level of 0 PSM, 10 PSM and 30 PSM g/kg of the basal diet (BD), respectively, and fed to immature O. mossambicus for a period of 30 and 60 days, respectively. Enzyme-linked immune-sorbent assay (ELISA) procedures were used to quantify the plasma levels of 17β-estradiol and 11-ketotestosterone. The inclusion of PSM did not affect the growth and survival rate of the O. mossambicus. The plasma levels of 11-ketotestosterone did not differ among the treatment groups. The 17β-estradiol levels of female fish that received 30 PSM g/kg BD for 60 days were significantly lower (p < 0.05) than the levels reported for females that were not fed the PSM. In females, the PSM reduced the gonad weight, GSI, fecundity and egg diameter of fish. The study concludes that pawpaw seed meal affected the reproductive function of the female O. mossambicus though the changes were reversible.en_ZA
dc.description.urihttps://www.ccsenet.org/journal/index.php/jas/article/view/0/38127
dc.description.versionPublisher's version
dc.identifier.citationOmeje, V. O., Lambrechts, H. & Brink, D. 2019. Hormonal profile and reproductive parameters of pre-vitellogenic mozambique tilapia (oreochromis mossambicus) on pawpaw (carica papaya) seed meal. Journal of Agricultural Science, 11(2):524-532, doi:10.5539/jas.v11n2p524
dc.identifier.issn1916-9760 (online)
dc.identifier.issn1916-9752 (print)
dc.identifier.otherdoi:10.5539/jas.v11n2p524
dc.identifier.urihttp://hdl.handle.net/10019.1/123256
dc.language.isoen_ZAen_ZA
dc.publisherCanadian Center of Science and Education
dc.rights.holderAuthors retain copyright
dc.subjectPawpaw seed meal (PSM)en_ZA
dc.subjectPhytochemicals -- Health aspectsen_ZA
dc.subjectEstradiol -- Analysisen_ZA
dc.subjectKeto-testosteroneen_ZA
dc.subjectFishes -- Feeding and feedsen_ZA
dc.subjectMozambique tilapiaen_ZA
dc.titleHormonal profile and reproductive parameters of pre-vitellogenic mozambique tilapia (oreochromis mossambicus) on pawpaw (carica papaya) seed mealen_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
omeje_hormonal_2019.pdf
Size:
297.11 KB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Animal Sciences)
Research Articles (Genetics)