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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2017, Vol. 5, Issue 4, Part A

Effect of propolis extract as feed additive on the growth performance and gonadal histology of red tilapia Oreochromis niloticus x O. mossambicus


Author(s): Ebtehal EL-Sayed M Hussein and Salah M. El-Sayed

Abstract: The present study was conducted to evaluate the effect of propolis extract as feed additive in the diets at 3, 6 and 12 mL kg-1 of feed on the performance, hematological parameters and testes histology of red tilapia, Oreochromis niloticus x O. mossambicus brood stock. The results performed that there were significant differences (P<0.05) among all treatments in terms of final weight, weight gain, specific growth rate and relative growth rate. Fish fed D1 gained the highest final body weight and fish fed D4 gained the lowest value of final body weight. The same trend was observed with weight gain, specific growth rate and relative growth rate. Feeding propolis supplemented diets did affect feed conversion ratio during the feeding trial. Fish fed D4 recorded the lowest FCR compared with the control diet (D1). Propolis as feed additive did not affect the survival rate of the experimental fish. Concerning the hematological parameters, fish fed D3 recorded the highest value of the hemoglobin and red blood cells compared with the control diet (D1). Propolis significantly (P<0.05) decreased the serum glucose, urea and increased the serum alanine aminotransferase (ALT). Fish fed D3 and D4 gained the lowest values of glucose and urea. Also, fish fed D4 recorded the higher ALT value compared with the control diet (D1). Also, there were no significant differences in the albumin, total protein and alkaline phosphatase of the serum among all treatments. Sections of testes from fish fed propolis supplemented diets showed seminiferous tubules impacted by spermatozoa compared with the control diet. It can be concluded that the propolis extract can be used as feed additive in the diets for red tilapia, Oreochromis niloticus x O. mossambicus brood stock up to 6 mL kg-1 without any adverse effects.

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How to cite this article:
Ebtehal EL-Sayed M Hussein, Salah M. El-Sayed. Effect of propolis extract as feed additive on the growth performance and gonadal histology of red tilapia Oreochromis niloticus x O. mossambicus. Int J Fish Aquat Stud 2017;5(4):11-16.
International Journal of Fisheries and Aquatic Studies