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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