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Table 2 Growth parameters, body compositions, and digestive enzyme-specific activities of adult male and female guppies

From: Effects of sex on characteristics and expression levels of digestive enzymes in the adult guppy Poecilia reticulata

Parameter Male Female p value
Body weight (g), n = 70 0.35 ± 0.01 0.89 ± 0.02 <0.001c
Total length (cm), n = 70 3.40 ± 0.02 4.27 ± 0.03 <0.001c
Condition factor (g/cm3), n = 70 0.89 ± 0.02 1.13 ± 0.01 <0.001c
Digestive index, n = 70    
 1. Gastrointestinal weight (g) 0.030 ± 0.01 0.067 ± 0.007 <0.001c
 2. Digestosomatic index (%) 9.02 ± 0.60 8.99 ± 0.65 0.961
Body composition (%), n = 10    
 1. Moisture 76.82 ± 0.32 75.14 ± 0.19 0.002c
 2. Lipids 2.69 ± 0.09 3.16 ± 0.08 0.002c
 3. Protein 13.76 ± 0.59 11.47 ± 0.54 0.430
 4. Ash 3.42 ± 0.08 3.69 ± 0.19 0.195
Digestive enzymes, n = 10    
 1. Amylase (A)a    
   1.1 Acidic amylase (pH 2, 50°C) 16.26 ± 0.58 39.51 ± 1.25 <0.001c
   1.2 Neutral amylase (pH 7, 55°C) 17.40 ± 1.17 36.86 ± 1.33 <0.001c
   1.3 Alkaline amylase (pH 11, 50°C) 16.39 ± 0.74 37.95 ± 0.95 <0.001c
 2. Neutral lipase (pH 7, 35°C)a 1.04 ± 0.09 0.42 ± 0.02 <0.001c
 3. Total proteasesb    
   3.1 Acidic protease (pH 2, 55°C) 111.69 ± 7.68 244.07 ± 7.23 <0.001c
   3.2 Alkaline protease (pH 9, 45°C) 74.70 ± 7.11 231.91 ± 18.94 <0.001c
 4. Trypsin (T) (pH 8, 50°C)a 0.61 ± 0.03 2.06 ± 0.19 <0.001c
 5. Chymotrypsin (C) (pH 9, 50°C)a 0.20 ± 0.01 0.38 ± 0.01 <0.001c
 6. T/C ratio 3.07 ± 0.05 5.39 ± 0.44 0.006c
 7. A/T ratio 30.29 ± 2.35 22.88 ± 0.26 0.035c
  1. aExpressed in units per milligram (U/mg) of protein. bExpressed in milliunits per milligram (mU/mg) of protein. cDiffered significantly (p < 0.05) between sexes.