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2024, Vol: 82
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Original Article 


Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil

Alaa M. Mansour, Ramy M. Shourbela, Yasmeen G. Haraz, Marawan S.A. Hussain, Mohamed A. Nossair, Heba M. Habib.


Abstract
This work was conducted to evaluate the effect of anise essential oil as a feed additive on growth performance and immunity of Nile tilapia (Oreochromis niloticus) exposed to two different challenges; reduced levels of dissolved oxygen (LDO) and/or infection with Aeromonas hydrophila. Juveniles were randomly distributed to six replicated experimental groups; groups 1, 2, and 3 were reared at normal levels of dissolved oxygen (NDO) (5 – 6 mg/l) and received 0, 1, and 2 ml/kg diet of anise essential oil, respectively. In addition, groups 4, 5, and 6 which were reared on LDO levels (2 – 3 mg/l) and received the same concentrations (conc.) of anise oil (0, 1, and 2 ml/kg diet, respectively). All groups were kept at a density of 30 fish/m3 and fed on a commercial basal diet (30% crude protein) for 60 days consecutively at rate of 3% body weight. Results cleared an enhancement of growth parameters of fish treated with anise oil, where final body weight, weight gain and average daily gain were increased and feed conversion ratio was decreased significantly than control groups even under hypoxic conditions. Moreover, groups that received anise oil showed stronger immunity against A. hydrophila infection synchronized with developed antioxidative capacity, where results indicated a significant increase in WBCs in all treated groups and globulin in a dose-dependent manner under hypoxic conditions. Additionally, using oil at a concentration of 2 ml/kg diet considerably raised superoxide dismutase (SOD) level under normal and hypoxic conditions and lowered the level of nitric oxide (NO) after challenge with bacteria at a concentration of 1 ml/kg diet at NDO and at 2 ml/kg diet at LDO.

Key words: Nile Tilapia, Oreochromis Niloticus, Anise essential oil, low DO.


 
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How to Cite this Article
Pubmed Style

Mansour AM, Shourbela RM, Haraz YG, Hussain MS, Nossair MA, Habib HM. Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. AJVS. 2024; 80(1): 183-194. doi:10.5455/ajvs.186384

Web Style

Mansour AM, Shourbela RM, Haraz YG, Hussain MS, Nossair MA, Habib HM. Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. https://www.alexjvs.com/?mno=186384 [Access: September 12, 2024]. doi:10.5455/ajvs.186384

AMA (American Medical Association) Style

Mansour AM, Shourbela RM, Haraz YG, Hussain MS, Nossair MA, Habib HM. Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. AJVS. 2024; 80(1): 183-194. doi:10.5455/ajvs.186384


Vancouver/ICMJE Style

Mansour AM, Shourbela RM, Haraz YG, Hussain MS, Nossair MA, Habib HM. Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. AJVS. (2024), [cited September 12, 2024]; 80(1): 183-194. doi:10.5455/ajvs.186384


Harvard Style

Mansour, A. M., Shourbela, . R. M., Haraz, . Y. G., Hussain, . M. S., Nossair, . M. A. & Habib, . H. M. (2024) Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. AJVS, 80 (1), 183-194. doi:10.5455/ajvs.186384


Turabian Style

Mansour, Alaa M., Ramy M. Shourbela, Yasmeen G. Haraz, Marawan S.A. Hussain, Mohamed A. Nossair, and Heba M. Habib. 2024. Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. Alexandria Journal of Veterinary Sciences, 80 (1), 183-194. doi:10.5455/ajvs.186384


Chicago Style

Mansour, Alaa M., Ramy M. Shourbela, Yasmeen G. Haraz, Marawan S.A. Hussain, Mohamed A. Nossair, and Heba M. Habib. "Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil." Alexandria Journal of Veterinary Sciences 80 (2024), 183-194. doi:10.5455/ajvs.186384


MLA (The Modern Language Association) Style

Mansour, Alaa M., Ramy M. Shourbela, Yasmeen G. Haraz, Marawan S.A. Hussain, Mohamed A. Nossair, and Heba M. Habib. "Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil." Alexandria Journal of Veterinary Sciences 80.1 (2024), 183-194. Print. doi:10.5455/ajvs.186384


APA (American Psychological Association) Style

Mansour, A. M., Shourbela, . R. M., Haraz, . Y. G., Hussain, . M. S., Nossair, . M. A. & Habib, . H. M. (2024) Response of Nile Tilapia reared at low dissolved oxygen level and challenged with Aeromonas hydrophila to dietary supplementation with different levels of Anise essential oil. Alexandria Journal of Veterinary Sciences, 80 (1), 183-194. doi:10.5455/ajvs.186384




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    The Alexandria Journal of Veterinary Sciences (AJVS) Official Journal of Faculty of Veterinary Medicine, Alexandria University   ISSN: 1110 ... Read more.



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