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Table 3 Nitrogen utilization by goats fed 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

   

N intake, g/d

24.3

26.1

26.5

2.14

0.48

0.80

Fecal N, g/d

6.2

6.6

7.4

0.67

0.21

0.84

Urinary N, g/d

6.6

6.4

9.1

0.87

0.06

0.18

N-balance, g/d

11.5

13.1

10.0

1.01

0.33

0.01

N-balance, % N intake

47.0

50.0

37.0

3.92

0.28

0.05

  1. * Based on orthogonal contrast for equally spaced treatments
  2. There were no treatment × period interactions (P > 0.10) hence only the main effects are reported