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Table 2 Growth performance of carp fed diets containing various phosphorus sources for 9 weeks

From: Effect of a new phosphorus source, magnesium hydrogen phosphate (MHP) on growth, utilization of phosphorus, and physiological responses in carp Cyprinus carpio

Parameters

Diet

CON

MCP

DCP

TCP

MHP

Initial wt (g/fish)

6.40 ± 0.05ns

6.63 ± 0.07

6.63 ± 0.08

6.60 ± 0.08

6.61 ± 0.12

Final wt (g/fish)

19.19 ± 0.23d

24.53 ± 0.30a

22.41 ± 0.28b

20.14 ± 0.41c

24.94 ± 0.39a

DFI (%/av. wt/day)1

2.17 ± 0.02a

1.91 ± 0.02c

2.01 ± 0.03b

2.17 ± 0.03a

1.88 ± 0.03c

WG (%)2

199.87 ± 5.68c

269.85 ± 2.44a

237.87 ± 2.76b

205.19 ± 2.61c

277.54 ± 12.59a

FCR3

1.29 ± 0.03a

1.00 ± 0.01c

1.09 ± 0.01b

1.28 ± 0.03a

0.99 ± 0.03c

PER4

1.83 ± 0.04c

2.34 ± 0.03a

2.17 ± 0.03b

1.83 ± 0.04c

2.39 ± 0.08a

SGR(%)5

1.74 ± 0.03c

2.08 ± 0.01a

1.93 ± 0.01b

1.77 ± 0.01c

2.11 ± 0.05a

SR(%)6

100 ± 0.00 ns

100 ± 0.00

100 ± 0.00

100 ± 0.00

100 ± 0.00

  1. Values (means ± SE of triplicates) with different superscript letters in the same row are significantly different (p < 0.05)
  2. ns nonsignificant
  3. 1Daily feed intake (%/av. wt/day) = dry feed intake (g/fish)/((initial wt + final wt)/2)/experimental days × 100
  4. 2Weight gain (%) = (final weight (g) − initial weight (g)) × 100/initial weight (g)
  5. 3Feed conversion ratio = dry feed intake/wet weight gain
  6. 4Protein efficiency ratio = wet weight gain (g)/protein intake
  7. 5Specific growth rate (%) = (Ln final weight (g) − Ln initial weight (g))/experimental days × 100
  8. 6Survival rate (%) = final fish number/initial fish number × 100