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Table 6 Physicochemical quality of Morada Nova lamb meat of different sexes subjected to feed restriction

From: Effects of quantitative feed restriction and sex on carcass traits, meat quality and meat lipid profile of Morada Nova lambs

Variables

Sexes

Feed restrictions

SEM

P-value

Ent

Cas

Fem

AL

30%

60%

Sex

Res

Sex × Res

L*

39.7ª

38.2b

37.5b

38.2

38.4

38.8

0.244

0.003

0.657

0.659

a*

22.2

21.8

21.9

21.9

22.3

21.7

0.233

0.767

0.541

0.689

b*

9.83

9.43

8.80

9.36

9.93

8.77

0.220

0.197

0.126

0.866

C*

24.3

23.8

23.6

23.8

24.4

23.4

0.320

0.386

0.252

0.771

WHC, %

35.9

34.5

35.0

34.7

32.8

37.9

1.045

0.859

0.154

0.511

CWL, %

38.6

38.5

37.4

37.4

38.5

38.6

0.403

0.443

0.408

0.937

pH

5.61

5.60

5.66

5.57b

5.62ab

5.69ª

0.019

0.354

0.044

0.667

Shear force, N

42.9

46.1

39.2

44.0

41.4

42.8

1.623

0.236

0.808

0.702

TBARS

0.72

0.75

0.85

0.82

0.64

0.86

0.041

0.395

0.073

0.534

Moisture, %

76.5

75.9

75.8

75.4b

75.9ª

76.9ª

0.146

0.167

0.001

0.064

Protein, %

18.6

18.9

19.0

18.9

18.5

19.1

0.117

0.332

0.139

0.018

Fat, %

3.99

4.32

4.18

4.74ª

4.70ª

3.05b

0.107

0.468

<.0001

0.680

Ash, %

0.92

0.90

0.93

0.92b

0.87b

0.98a

0.009

0.327

<.0001

0.155

  1. Ent Entire males, Cas Castrated males, Fem Females, AL ad libitum intake, 30% 30% feed restriction, 60% 60% feed restriction, SEM standard error of the mean, Sex sexes and Res = feed restriction, Color parameter L* lightness, 0 black and 100 white, Color parameter a* redness, ranges from green (−) to red (+), Color parameter b* yellowness, ranges from blue (−) to yellow (+), Color parameter C* chroma; C* = (a*2 + b*2)1/2(MacDougall and Taylor, 1975), WHC water holding capacity, CWL Cooking weight losses, TBARS 2-thiobarbituric acid reactive substance, MDA malondialdehyde
  2. a b Means followed by different letters differ between sexes according to a Tukey-Kramer test (P < 0.05)
  3. a b Means followed by different letters differ between feed restrictions according to a Tukey-Kramer test (P < 0.05)