Version 1
: Received: 10 October 2023 / Approved: 11 October 2023 / Online: 11 October 2023 (08:53:42 CEST)
How to cite:
Okuthe, G. E.; Bhomela, B.; Oriola, A.; Vundisa, N. Evaluation of Aspalathus linearis Tea Extract as a Functional Ingredient in Mozambique Tilapia (Oreochromis mossambicus) Culture. Preprints2023, 2023100681. https://doi.org/10.20944/preprints202310.0681.v1
Okuthe, G. E.; Bhomela, B.; Oriola, A.; Vundisa, N. Evaluation of Aspalathus linearis Tea Extract as a Functional Ingredient in Mozambique Tilapia (Oreochromis mossambicus) Culture. Preprints 2023, 2023100681. https://doi.org/10.20944/preprints202310.0681.v1
Okuthe, G. E.; Bhomela, B.; Oriola, A.; Vundisa, N. Evaluation of Aspalathus linearis Tea Extract as a Functional Ingredient in Mozambique Tilapia (Oreochromis mossambicus) Culture. Preprints2023, 2023100681. https://doi.org/10.20944/preprints202310.0681.v1
APA Style
Okuthe, G. E., Bhomela, B., Oriola, A., & Vundisa, N. (2023). Evaluation of Aspalathus linearis Tea Extract as a Functional Ingredient in Mozambique Tilapia (<em>Oreochromis mossambicus</em>) Culture. Preprints. https://doi.org/10.20944/preprints202310.0681.v1
Chicago/Turabian Style
Okuthe, G. E., Ayodeji Oriola and Noluyolo Vundisa. 2023 "Evaluation of Aspalathus linearis Tea Extract as a Functional Ingredient in Mozambique Tilapia (<em>Oreochromis mossambicus</em>) Culture" Preprints. https://doi.org/10.20944/preprints202310.0681.v1
Abstract
Supplements in fish nutrition can help alleviate pressure on the wild stock; however, there is limited information on the benefits of rooibos tea extract in aquafeed. This study aimed to determine the effect of rooibos tea extract inclusion in the commercial diet on the growth performance of larval fish. Fish were reared on three diets: a commercial diet with 30% fermented or green rooibos extract and a commercial tilapia diet (control). Fish (initial weight of 0.54 ± 0.008 g and length of 2.22 ± 0.01 cm) were randomly distributed into recirculating aquaculture systems in triplicates at 100 fish per tank. Fish was hand-fed thrice daily for eight weeks at 2% body weight. After that, samples were withdrawn to measure growth parameters. Fish-fed fermented, and green tea extracts exhibited a significantly (p ˂ 0.05) higher weight gain than the controls. The feed conversion ratio was higher in the control group, fermented (1.50 ± 0.25 cm) and green tea (1.41 ± 0.07 cm). Similarly, the control group exhibited the highest condition factor (K=13.14 ± 4.87). The two treatment groups were comparable (p >0.05) in growth performance. Overall, the evidence indicates that adding rooibos tea extracts to the basal diet can improve fish growth.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
