ASSESSMENT OF THE NUTRITIONAL VALUE AND HISTOPATHOLOGICAL EFFECTS OF ADDING PROPOLIS TO THE DIET OF NILE TILAPIA (OREOCHROMIS NILOTICUS). | ||
| Aswan University Journal of Sciences and Technology | ||
| Articles in Press, Accepted Manuscript, Available Online from 10 September 2025 PDF (1.28 M) | ||
| Document Type: Original papers | ||
| DOI: 10.21608/aujst.2025.357376.1172 | ||
| Authors | ||
| Abdalla Mansour Singer* 1; Hamdy M. Khattab2; Fatma Abdelhakeem3; Marina Onsy Eshak Hanna4; Ragaa A. Ahmed5 | ||
| 1Faculty of Agriculture and Natural Resources, Aswan University, Department of Animal and poultry production | ||
| 2Dept.of Anim. Prod. Fac. Of Agric. Ain Shams Univ. Cairo, Egypt | ||
| 3Dept. of Anatomy and Embryology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt. | ||
| 4Dept. Of Animal and poultry production, Fac. of Agric. and Natural Resources, Aswan Univ. Egypt. | ||
| 5Dept. of Aquaculture Fac. of Fish and Fisheries Technology, Aswan Univ. Egypt | ||
| Abstract | ||
| The experiment was conducted using 12 ponds to evaluate the effect of dietary propolis supplementation on Nile tilapia. Four levels of propolis were tested (C=0, T1=4, T2=8, T3=16 g/kg diet), with each treatment replicated in three hapa. Nile tilapia fingerlings (2.1 g) were stocked at a rate of 60 fingerlings per hapa and fed twice daily, with feed amounts adjusted biweekly based on weight changes. Intestinal samples were preserved in 10% neutral-buffered formalin for histological analysis. The T3 group exhibited the highest (P<0.05) final body weight (FBW), weight gain (WG), feed conversion ratio (FCR), protein efficiency ratio (PER), and protein productive value (PPV), followed by T2. No significant differences were observed in body crude protein, moisture, fat, or ash content among the groups. Histological examination revealed no pathological changes in the intestines of fish fed the control diet. Fish in T1 showed elongated intestinal villi and a reduced number of goblet cells. The T2 group demonstrated significantly enhanced villus length and goblet cell proliferation, indicating improved nutrient absorption. However, T3 fish exhibited shorter villi and fewer goblet cells. Overall, the results suggest that propolis supplementation, particularly at 8 g/kg (T2), improves growth performance, nutrient absorption, and gut health in Nile tilapia, making it a promising strategy for enhancing aquaculture production | ||
| Keywords | ||
| Honey bee propolis; Histological; Nile tilapia fingerlings; Villi; Feed conversion ratio | ||
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