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Effects of diet quantity on growth performance of juvenile sea cucumbers Holothuria scabra

Mamdouh Al-Harbi
Mamdouh Al-Harbi
   | Jul 07, 2022
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Article Category: Original research paper
Published Online: Jul 07, 2022
Page range: 158 - 166
Received: Dec 24, 2021
Accepted: Apr 04, 2022
DOI: https://doi.org/10.26881/oandhs-2022.2.04
© 2022 Mamdouh Al-Harbi, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Water quality parameters in the tanks used for culturing sea cucumbers with feed-A: a) temperature, b) dissolved oxygen content, c) pH.
Water quality parameters in the tanks used for culturing sea cucumbers with feed-A: a) temperature, b) dissolved oxygen content, c) pH.

Figure 2

Water quality parameters in the tanks used for culturing sea cucumbers with feed-B: a) temperature, b) dissolved oxygen content, c) pH.
Water quality parameters in the tanks used for culturing sea cucumbers with feed-B: a) temperature, b) dissolved oxygen content, c) pH.

Figure 3

Anoxic soil conditions at the bottom of the culture tanks during the experiment: a) culture tanks with sea cucumbers treated with feed-A; b) culture tanks with sea cucumbers treated with feed-B.
Anoxic soil conditions at the bottom of the culture tanks during the experiment: a) culture tanks with sea cucumbers treated with feed-A; b) culture tanks with sea cucumbers treated with feed-B.

Growth performance indices of sea cucumbers H. scabra fed with different feed percentages. Values presented in the table are mean ± SD, n = 3.

Growth performance indicators Feed treatment groups
Feed-A Feed-B
2% 4% 6% 8% 2% 4% 6% 8%
Initial weight (g) 2.33 ± 0.34 1.89 ± 0.14 1.77 ± 0.08 1.59 ± 0.2 3.67 ± 0.35 3.71 ± 0.31 3.42 ± 0.16 3.05 ± 0.28
Final weight 1.67 ± 0.32 2.15 ± 0.21 2.15 ± 0.13 2.77 ± 0.53 5.98 ± 0.82 9.57 ± 2.47 5.54 ± 1.02 8.46 ± 1.62
Total weight gain (g) –0.66 ± 0.27 0.25 ± 0.11 0.37 ± 0.16 1.18 ± 0.65 2.3 ± 1.18 5.85 ± 2.3 2.11 ± 1.16 5.41 ± 1.9
Total weight gain (%) –41.3 ± 19.78 11.71 ± 4.88 37.33 ± 16.5 40.64 ± 15.63 37.26 ± 13.62 59.73 ± 8.4 36.38 ± 14.35 62.52 ± 11.26
Specific growth rate (% d-1) -1.12 ± 0.48 0.41 ± 0.18 0.63 ± 0.27 1.82 ± 0.94 1.61 ± 0.78 3.08 ± 0.73 1.56 ± 0.73 3.36 ± 0.97

Two-way ANOVA results for the total weight gain (%) and specific growth rate of sea cucumbers fed with different feed percentages. Feed percentage and feed type were used as factors for ANOVA (P < 0.05 = significant).

  Weight gain (%) SGR
Effect Df F P F P
Feed type 1 42.922 < 0.05 47.680 < 0.05
Feed ratio 3 16.510 < 0.05 12.212 < 0.05
Feed type*Feed ratio 3 9.251 < 0.05 2.392 > 0.05
Error 16        

Tukey’s post-hoc HSD test results (approximate probabilities) for SGR and weight gain (%) of sea cucumbers fed with feed-A (P < 0.05 = significant)

Factor 1 (feed percentage) Factor 2 (feed percentage) SGR (Between MS = .30944, df = 8) Weight gain (%) (Between MS = 232.98, df = 8)
2 4 < 0.05 < 0.05
6
8
4 6 > 0.05 > 0.05
8
6 8
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