Effect of using red-claw crayfish (Cherax quadricarinatus) meal, blood meal or black soldier fly (Hermetia illucens) larvae meal / as replacement for fishmeal on the growth and survival rate of the three spotted tilapia (Oreochromis andersonii).
| dc.contributor.author | Kabati, Chilufya | |
| dc.date.accessioned | 2023-07-21T07:43:26Z | |
| dc.date.available | 2023-07-21T07:43:26Z | |
| dc.date.issued | 2023 | |
| dc.description | Thesis | en |
| dc.description.abstract | Aquaculture is fastest food producing sector in the world with most of the production coming from small and medium income countries, Unfortunately, the development of aquaculture in Africa has largely lagged behind Asian countries due to the high cost and scarcity of fishmeal, which is an important animal protein source used in the formulation of good quality fish feed. The objective of this study was to compare the effect of red-claw crayfish meal, bloodmeal or black soldier fly larvae meal as replacement of fishmeal on growth performance, survival and whole-body composition of Oreochromis andersonii. Four diets containing 35% crude protein were provided at 5% live body weight to four groups of O. andersonii fingerlings of 2.92 ± 0.1g replicated 3 times for 90 days; Diet 1 (control) contained fishmeal (FM), Diet 2 contained Red-claw crayfish meal (CFM), Diet 3 contained bloodmeal (BM), Diet 4 contained black soldier fly larvae meal (BSFM). The final mean weight varied from 20.87±0.16g(BM) to 23.39±0.25g(FM) and Weight gain varied from 17.92±0.16g(BM) to 20.50±0.27g(FM) respectively, FM was significantly different (P < 0.05) from CFM and BM but was not significantly different (P > 0.05) from BSFM with respect to final mean weight and weight gain of fish respectively. Specific growth rate (SGR) ranged from 2.17±0.02g(BM) to 2.33±0.02g(FM), in this category FM did not differ significantly (P > 0.05) from BSFM and it was significantly higher in these two treatments, however, FM was significantly different (P < 0.05) from CFM and BM. Feed conversion ratio (FCR) showed significant differences (P < 0.05) across the treatments with BSFM(1.24±0.01) performing significantly better than other treatments followed by FM, BM(2.06±0.02) was significantly lower. The results showed that the best growth performance and good feed utilization was noticed in FM and BSFM and the least was observed in BM. Furthermore, survival rate of fish ranged from 89±0.05% (BM) to 98±0.02% (CFM) and it did not differ significantly (P > 0.05) across the treatments. Crude protein ranged from 40.47±0.52% (CFM) to 56.19±0.72% (BM), fish fed FM was significantly different (P < 0.05) from those fed CFM and BSFM but it was not significantly different (P > 0.05) from that fed BM. Crude fat varied from 27.33±0.21% (FM) to 40.41±0.41% (BSFM), significant differences (P < 0.05) were observed in crude fat across all the treatments. The Ash content varied from 15.44±0.35%(CFM) to 16.55±0.23%(FM), significant differences (P < 0.05) in ash content were observed between fish fed FM and those fed CFM and BM but fish iv fed FM was not significantly different (P > 0.05) from that fed BSFM, however among the treatments, fish fed CFM and BM were not significantly different (P > 0.05) from each other. The results of this study shows that black soldier fly larvae meal (BSFM) can be used to replace fishmeal (FM) in fish feeds without having any adverse effect on growth performance, survival rate and whole-body composition of Oreochromis andersonii. Key words: Red-claw Crayfish, Black soldier fly larvae, blood meal, Fishmeal, Oreochromis andersonii | en |
| dc.identifier.uri | http://dspace.unza.zm/handle/123456789/8079 | |
| dc.language.iso | en | en |
| dc.publisher | The University of Zambia | en |
| dc.subject | Fishmeal. | en |
| dc.subject | Aquaculture--Economic aspects. | en |
| dc.subject | Aquaculture--Fishmeal. | en |
| dc.title | Effect of using red-claw crayfish (Cherax quadricarinatus) meal, blood meal or black soldier fly (Hermetia illucens) larvae meal / as replacement for fishmeal on the growth and survival rate of the three spotted tilapia (Oreochromis andersonii). | en |
| dc.type | Thesis | en |