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Table 4 Apparent nutrient intake, digestibility and major mineral utilization of diets by goats consuming various levels of pine bark (PB) supplementation

From: The effects of tannins-containing ground pine bark diet upon nutrient digestion, nitrogen balance, and mineral retention in meat goats

 

Treatment (% PB)

 

P-value*

Item

0

15

30

SEM

Linear

Quadratic

No. of animals

6

6

6

   

Average BW

33.2

31.1

31.8

1.49

0.52

0.47

DMI, kg/d

1.02

1.01

1.10

0.80

0.49

0.68

Digestible DMI, kg/d

0.68

0.62

0.76

0.25

0.25

0.05

Digestible CP intake,

119.4

121.4

106.8

7.50

0.43

0.28

kg/d

      

Intake, g/kg BW

      

 DM

31.3

28.8

34.3

1.36

0.12

0.03

 CP

4.7

4.5

5.2

0.23

0.12

0.17

 NDF

11.9

10.4

11.1

0.40

0.16

0.02

 ADF

7.8

7.1

8.6

0.30

0.05

0.06

 Lignin

1.94

3.2

4.0

0.10

0.01

0.07

 NFC

12.1

11.1

14.3

0.66

0.02

0.06

 Ash

1.96

1.75

1.97

0.08

0.94

0.04

 CT (butanol-HCl)

0.06

0.44

1.11

0.02

0.001

0.01

 TDN, %

66.6

64.1

64.5

0.78

0.06

0.16

 Fecal DM output, g/d

347.8

334.0

373.9

32.56

0.58

0.51

 Fecal DM output, g/BW

10.6

10.5

12.0

0.56

0.09

0.28

Digestibility, %

      

 DM

66.3

63.3

65.0

1.67

0.59

0.26

 CP

73.5

71.1

69.6

1.64

0.09

0.84

 NDF

48.8

39.4

36.5

2.84

0.01

0.36

 ADF

47.4

34.2

29.7

3.45

0.001

0.30

 NFCa

63.1

58.2

60.1

2.12

0.33

0.19

 Lignin

41.1

27.7

18.2

4.50

0.001

0.73

 Ash

65.5

62.3

64.3

1.74

0.61

0.23

Digested mineralb, g/d

      

 Ca

37.8

41.5

45.6

3.21

0.09

0.95

 P

2.9

9.4

20.7

5.44

0.03

0.72

 Mg

46.5

42.8

57.4

2.98

0.01

0.02

 K

79.8

71.9

61.2

3.47

0.001

0.75

 S

61.9

59.4

56.9

2.19

0.11

0.99

 Na

27.0

41.8

33.5

5.03

0.13

0.11

 Cu, mg/d

62.8

63.2

47.1

6.02

0.07

0.27

 Mn, mg/d

20.3

33.9

36.8

4.35

0.01

0.33

 Zn, mg/d

28.7

30.9

46.6

4.37

0.01

0.22

 Fe, mg/d

12.6

20.2

21.8

3.68

0.09

0.51

  1. * Based on orthogonal contrast for equally spaced treatments
  2. a NFC non-fiber carbohydrate, DMI dry matter (DM) intake, CP crude protein, NDF neutral detergent fiber, ADF acid detergent fiber
  3. b Digested mineral = Intake of minerals (g/DM)–fecal mineral contents (g/DM) during 24 h sample collection
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891