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Effects of pituitary extract,ovaprim,and bitter leaf(Vernonia amygdalina)on the histopathology of African catfish(Clarias gariepinus)

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Aquaculture and Fisheries 2018年第6期3卷 232-237页

作者： Blessing B.Ajayi John O.Ogunsola Olufemi I.Olatoye Richard E.Antia Samuel Agbede Department of Veterinary Public Health and Preventive Medicine University of IbadanIbadan 200284Nigeria Veterinary Teaching Hospital University of IbadanIbadan 200284Nigeria Department of Veterinary Pathology University of IbadanIbadan 200284Nigeria

The development of aquaculture in Nigeria is constrained by the inadequate supply of high quality of fingerlings of African catfish(Clarias gariepinus).There are conflicting reports on the reproductive efficacy of Vernonia amygdalina when compared with the synthetic hormone ovaprim(OV)and Pituitary Extract(PE)on *** histopathology of select organs in catfish treated with generic ovaprim(OV),Pituitary Extract(CPE),and aqueous extract of Vernonia amygdalina(VAE)were *** female ***(average weight of 1 kg)wereevenly and randomly distributed to four *** in groups A,B,C,and D were injected intramuscularly with aqueous solutions of OV(0.5 mL/kg),PE(5 mg/kg),VAE(10 mg/kg),and distilled water(DW;0.5 ml),*** examinations of the ovary,liver,kidney,and spleen were carried *** revealed that OV-and PE-treated groups showed synchronous and synchronous ovarian development,vacuolar change of hepatocytes,thinning of hepatic cords,reduced renal haemopoietic compartments,tubular degeneration and necrosis,and decrease in splenic periarteriolar lymphoid sheaths(PALS).VAE-treated groups had asynchronous ovarian development with atretic ovarian follicles,widespread vacuolar change of hepatocytes,intact renal tubular and hemopoietic compartments,and preponderance of large and coalescing splenic *** conclude that VAE is an ineffective spawning agent,especially when compared with OV and PE,as VAE could not induce synchronous gonadal ***,VAE may have immunopotentiating,nephroprotective,and haemopoietic properties.

关键词： Clarias gariepinus Vernonia amygdalina extract Pituitary extract ovaprim Gonadal development Histopathology Reproductive performance

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