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Table 3. Carcass characteristics and organ weights of different broiler strains after 42 days trial.

Attributes

Parameter

Cobb 500

Ross

IR

EP

p-value

Carcass traits

Live wt (g)

2820.67a±49.18

2623.00b±59.57

2475.33b±69.68

2137.33c±40.34

<0.001

Carcass wt (g)

1688.67a±8.51

1470.00b±13.32

1421.00b±59.15

1228.00c±26.15

<0.001

Dressing %

59.87±7.30

56.04±6.36

57.41±8.89

57.45±6.82

0.065

Thigh wt (g)

144.67±26.77

105.67±2.33

91.00±6.08

90.67±2.91

0.075

Drumstic wt (g)

128.00a±7.57

108.00b±6.43

98.00b±4.62

96.00b±2.31

0.013

Wings wt (g)

82.67a±4.37

73.00a±1.53

76.67a±3.33

62.00b±3.06

0.012

Breast wt (g)

708.00a±21.20

593.33b±9.61

612.67b±20.08

511.33c±16.59

<0.001

Shank wt (g)

118.67a±4.81

100.67ab±13.48

93.00ab±4.93

80.67b±4.06

0.048

Head wt (g)

56.67a±0.67

47.67b±1.45

47.33b±1.76

40.00c±2.00

0.001

Neck wt (g)

60.67±7.06

56.67±0.67

47.67±7.22

44.67±0.67

0.167

Organ Weight

Liver wt (g)

70.67±7.69

76.00±4.00

58.00±6.43

54.00±3.46

0.076

Heart wt (g)

12.00±0.00

12.50±1.76

10.00±2.31

8.00±0.00

0.191

Spleen wt (g)

2.57±0.72

3.60±0.67

2.17±0.12

1.83±0.17

0.150

Gizzard wt (g)

34.67±4.67

30.67±3.53

37.67±1.45

26.67±1.76

0.151

Lungs wt (g)

13.00±3.00

12.33±1.67

11.00±1.00

15.00±1.53

0.560

Bursa wt (g)

1.53±0.17

1.40±0.15

1.30±0.25

1.40±0.20

0.868

Thymus wt (g)

10.33±0.33

7.17±0.73

7.33±0.67

7.40±1.40

0.093

One-way ANOVA with Duncan multiple range test (DMRT); abcSuperscripts indicate significant variation among the group. Significance level p<0.05