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Table 4 Apparent ileal digestibility of crude protein (CP) and AA in distillers dried grains with solubles subjected to increasing levels of heat treatment by weanling pigs 1

From: Amino acid digestibility of heat damaged distillers dried grains with solubles fed to pigs

 

Distillers dried grains with solubles

   
  

Autoclaved at 130°C

SEM

P-value2

Item

Non-autoclaved

10 min

20 min

30 min

 

Linear

Quadratic

CP, %

64.4

59.0

52.2

55.7

2.0

< 0.01

0.12

Indispensable AA, %

       

 Arginine

79.3

71.9

72.0

69.1

1.7

< 0.01

0.06

 Histidine

73.9

66.8

65.9

66.0

1.3

< 0.01

0.23

 Isoleucine

72.3

66.2

66.6

63.1

1.4

< 0.01

0.02

 Leucine

84.0

80.7

80.4

79.1

0.8

< 0.01

0.12

 Lysine

61.2

48.0

48.7

44.9

1.9

< 0.01

0.02

 Methionine

83.6

77.7

77.8

75.7

0.9

< 0.01

< 0.01

 Phenylalanine

79.8

75.1

75.4

73.6

1.0

< 0.01

0.04

 Threonine

60.2

53.9

53.2

51.2

1.6

< 0.01

0.27

 Tryptophan

55.1

43.7

42.8

41.5

2.0

< 0.01

0.15

 Valine

71.9

65.7

65.5

62.6

1.4

< 0.01

0.08

 Mean

75.6

70.0

69.9

67.8

1.1

< 0.01

0.07

Dispensable AA, %

       

 Alanine

77.5

73.3

71.4

71.0

1.3

< 0.01

0.86

 Aspartic acid

65.5

55.2

55.4

53.3

1.5

< 0.01

0.02

 Cysteine

71.9

64.7

60.5

62.7

1.5

< 0.01

0.54

 Glutamic acid

81.7

76.7

75.6

75.3

0.9

< 0.01

0.34

 Glycine

43.4

36.3

29.0

31.7

4.6

< 0.01

0.47

 Proline

69.6

65.1

64.1

63.2

1.3

< 0.01

0.47

 Mean

68.3

61.8

59.2

59.5

1.5

< 0.01

0.85

  1. 1Data are means of 8 observations, except for the distillers dried grains with solubles diet that was autoclaved for 10 min (n = 7).
  2. 2Linear and quadratic effects of time of autoclaving.