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Table 5 Muscle growth hormone, Igf-I, Igf-II contents, and other growth-related enzyme activity in Nile tilapia fed experimental diets at 8 weeks

From: Effects of replacing fish oil with palm oil in diets of Nile tilapia (Oreochromis niloticus) on muscle biochemical composition, enzyme activities, and mRNA expression of growth-related genes

Enzymes/genes

Experimental diets

p value

PO 0

PO 25

PO 50

PO75

PO 100

Pax-7 (pg/ml)

791 ± 52.67abc

705.7 ± 43.75a

947.80 ± 16.05c

916 ± 53.03bc

742.90 ± 59.53ab

0.0054

GH (ng/ml)

36.2 ± 0.04

35.9 ± 0.03

36.6 ± 0.01

36.1 ± 0.01

35.9 ± 0.02

0.0162

Igf-I (ng/ml)

37.05 ± 4.87ab

28.06 ± 0.05ab

46.08 ± 2.11b

24.40 ± 0.39a

44.67 ± 2.70ab

0.4216

Igf-II (ng/ml)

48.70 ± 5.26

58.61 ± 1.70

52.72 ± 3.82

53.92 ± 1.61

51.88 ± 3.96

0.4409

Psma α-5 (ng/ml)

109.70 ± 5.50

120.10 ± 7.97

112.70 ± 5.31

119.2 ± 8.06

111.20 ± 7.57

0.7614

Capn-3(pg/ml)

178.50 ± 3.28a

233.20 ± 9.66b

273 ± 13.52b

248.40 ± 9.11b

245.6 ± 14.23b

0.0001

MyoD (pg/ml)

323.5 ± 20.17ab

272.9 ± 19.04a

329.40 ± 15.30b

281.60 ± 16.70ab

327.90 ± 25.85b

0.0058

MyoG (pg/ml)

534.80 ± 14.46

586 ± 25.25

560.10 ± 43.44

563.5 ± 23.79

535.01 ± 23.79

0.7246

  1. Pax-7 paired box protein 7, Igf-I insulin-like growth factor-I, Igf-II insulin-like growth factor-II, GH growth hormone, Psma-α 5 proteasome subunit alpha type-5, Capn-3 caplain-3, MyoD myoblast determination protein, MyoG myogenin
  2. Values are mean ± SEM (n = 3). Means not bearing the same superscript letters in the same row are significantly different (p < 0.05)