Biological indices; length-weight relationship and fish condition are tools for design of husbandry practices and developing policies for fish farming in natural and artificial water systems. We investigated the effects of fish stocking density treatments; A (100), B (150), C (200) and D (250) fishm-3 on growth and well-being of Nile tilapia, reared in floating cages at Arechek valley dam located in Napak District, Karamoja-Uganda. Length-weight relationship and relative condition factor were computed for each treatment and the resultant outputs compared using univariate ANOVA, and regression analyses. Final fish weights (±Stdev) in different treatments were 311.49±114.6, 204.8±30.5, 138±40.2 and 153.3±68.8g while the mean total lengths were 23.29±2.55 cm, 17.5±5.5, 15.6±15.6 and 19.4±3.02 cm, in A, B, C and D respectively. The length-weight allometry was significantly (P<0.05) different among treatments, (F(5, 1081) = 3.102). Mean relative conditions (Kn) were (±Stdev) 1.08±0.08, 1.91±0.13, 0.79±0.08 and 0.65±0.08 in A, B, C and D respectively, and these were significantly different (P<0.05). Water quality parameters did not influence fish growth and Kn, F(4, 59) = 1.849, P>0.05, R2 = 0.111). The variation in condition was mainly due to stocking density (P<0.05). The most appropriate stocking density of Nile tilapia in valley dam using 35% C. P sinking feed is 100-150 fishm-3 of cage.
| Published in | International Journal of Natural Resource Ecology and Management (Volume 4, Issue 2) |
| DOI | 10.11648/j.ijnrem.20190402.11 |
| Page(s) | 35-41 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2019. Published by Science Publishing Group |
Growth, Fish Well-being, Aquaculture Policy
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APA Style
Constantine Chobet Ondhoro, Moses Ndugwa, Paul Boma, Charles Byaruhanga, George Egau, et al. (2019). Stocking Density, Length-Weight Relationship and the Condition of Nile Tilapia in Valley Dam Based Floating Cages in Semi-Arid Karamoja Sub-Region of Uganda. International Journal of Natural Resource Ecology and Management, 4(2), 35-41. https://doi.org/10.11648/j.ijnrem.20190402.11
ACS Style
Constantine Chobet Ondhoro; Moses Ndugwa; Paul Boma; Charles Byaruhanga; George Egau, et al. Stocking Density, Length-Weight Relationship and the Condition of Nile Tilapia in Valley Dam Based Floating Cages in Semi-Arid Karamoja Sub-Region of Uganda. Int. J. Nat. Resour. Ecol. Manag. 2019, 4(2), 35-41. doi: 10.11648/j.ijnrem.20190402.11
AMA Style
Constantine Chobet Ondhoro, Moses Ndugwa, Paul Boma, Charles Byaruhanga, George Egau, et al. Stocking Density, Length-Weight Relationship and the Condition of Nile Tilapia in Valley Dam Based Floating Cages in Semi-Arid Karamoja Sub-Region of Uganda. Int J Nat Resour Ecol Manag. 2019;4(2):35-41. doi: 10.11648/j.ijnrem.20190402.11
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Download@article{10.11648/j.ijnrem.20190402.11,
author = {Constantine Chobet Ondhoro and Moses Ndugwa and Paul Boma and Charles Byaruhanga and George Egau and Paul Okullo},
title = {Stocking Density, Length-Weight Relationship and the Condition of Nile Tilapia in Valley Dam Based Floating Cages in Semi-Arid Karamoja Sub-Region of Uganda},
journal = {International Journal of Natural Resource Ecology and Management},
volume = {4},
number = {2},
pages = {35-41},
doi = {10.11648/j.ijnrem.20190402.11},
url = {https://doi.org/10.11648/j.ijnrem.20190402.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijnrem.20190402.11},
abstract = {Biological indices; length-weight relationship and fish condition are tools for design of husbandry practices and developing policies for fish farming in natural and artificial water systems. We investigated the effects of fish stocking density treatments; A (100), B (150), C (200) and D (250) fishm-3 on growth and well-being of Nile tilapia, reared in floating cages at Arechek valley dam located in Napak District, Karamoja-Uganda. Length-weight relationship and relative condition factor were computed for each treatment and the resultant outputs compared using univariate ANOVA, and regression analyses. Final fish weights (±Stdev) in different treatments were 311.49±114.6, 204.8±30.5, 138±40.2 and 153.3±68.8g while the mean total lengths were 23.29±2.55 cm, 17.5±5.5, 15.6±15.6 and 19.4±3.02 cm, in A, B, C and D respectively. The length-weight allometry was significantly (P(5, 1081) = 3.102). Mean relative conditions (Kn) were (±Stdev) 1.08±0.08, 1.91±0.13, 0.79±0.08 and 0.65±0.08 in A, B, C and D respectively, and these were significantly different (Pn, F(4, 59) = 1.849, P>0.05, R2 = 0.111). The variation in condition was mainly due to stocking density (P-3 of cage.},
year = {2019}
}
TY - JOUR T1 - Stocking Density, Length-Weight Relationship and the Condition of Nile Tilapia in Valley Dam Based Floating Cages in Semi-Arid Karamoja Sub-Region of Uganda AU - Constantine Chobet Ondhoro AU - Moses Ndugwa AU - Paul Boma AU - Charles Byaruhanga AU - George Egau AU - Paul Okullo Y1 - 2019/05/17 PY - 2019 N1 - https://doi.org/10.11648/j.ijnrem.20190402.11 DO - 10.11648/j.ijnrem.20190402.11 T2 - International Journal of Natural Resource Ecology and Management JF - International Journal of Natural Resource Ecology and Management JO - International Journal of Natural Resource Ecology and Management SP - 35 EP - 41 PB - Science Publishing Group SN - 2575-3061 UR - https://doi.org/10.11648/j.ijnrem.20190402.11 AB - Biological indices; length-weight relationship and fish condition are tools for design of husbandry practices and developing policies for fish farming in natural and artificial water systems. We investigated the effects of fish stocking density treatments; A (100), B (150), C (200) and D (250) fishm-3 on growth and well-being of Nile tilapia, reared in floating cages at Arechek valley dam located in Napak District, Karamoja-Uganda. Length-weight relationship and relative condition factor were computed for each treatment and the resultant outputs compared using univariate ANOVA, and regression analyses. Final fish weights (±Stdev) in different treatments were 311.49±114.6, 204.8±30.5, 138±40.2 and 153.3±68.8g while the mean total lengths were 23.29±2.55 cm, 17.5±5.5, 15.6±15.6 and 19.4±3.02 cm, in A, B, C and D respectively. The length-weight allometry was significantly (P(5, 1081) = 3.102). Mean relative conditions (Kn) were (±Stdev) 1.08±0.08, 1.91±0.13, 0.79±0.08 and 0.65±0.08 in A, B, C and D respectively, and these were significantly different (Pn, F(4, 59) = 1.849, P>0.05, R2 = 0.111). The variation in condition was mainly due to stocking density (P-3 of cage. VL - 4 IS - 2 ER -
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