Table 6 Formulated feed cost, feed conversion ratio, and economic conversion ratio of tilapia production.

From: Microalgae-blend tilapia feed eliminates fishmeal and fish oil, improves growth, and is cost viable

Scenario

Formulated feed costa

Feed conversion ratiob

Economic conversion ratioa

($/kg feed)

($/kg tilapia)

Referencec

0.64 [0.61, 0.68]

1.61 ± 0.1

1.03 [0.95, 1.13]d,e

33NSf

0.72 [0.66, 0.78]

1.57 ± 0.1

1.14[1.00, 1.27]e

66NSg

0.70 [0.64, 0.76]

1.60 ± 0.1

1.12 [0.99, 1.25]e

100NSh

0.68 [0.62, 0.73]

1.40 ± 0.1

0.95 [0.82, 1.07]d

F value

 

3.00

13.49

P value

 

0.09

0.002

  1. aMedian [and 95% confidence interval].
  2. bMean ± standard error for 3 replicates per diet.
  3. cReference: no replacement of fish meal (FM) and fish oil (FO).
  4. d,eMedian values throughout the column not sharing a common superscript were significantly different as determined by Tukey’s HSD test, P < 0.05.
  5. fReplacement of 33% of FM with N. oculata and 100% of FO with Schizochytrium sp.
  6. gReplacement of 66% of FM with N. oculata and 100% of FO with Schizochytrium sp.
  7. hReplacement of 100% of FM with N. oculata and 100% of FO with Schizochytrium sp.
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