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Table 6 Nitrogen balance of Farafra sheep fed different experimental diets

From: Effect of different dietary protein sources on digestibility and growth performance parameters in lambs

Item

Experimental diets

SE

Sig

SBM

BCSM

CSM

SSM

Nitrogen balance (g/head/day)

Nitrogen intake

20.80

22.19

22.70

23.08

0.51

NS

Fecal nitrogen

7.01b

9.02a

5.19c

6.69b

0.49

*

Urinary nitrogen

12.32a

9.31b

5.46c

10.37b

0.77

**

Digestible nitrogen

13.79c

13.17c

17.51a

16.39b

0.64

*

Nitrogen retention

1.47c

3.86bc

12.05a

6.02b

1.22

**

N retent./N intake (%)

7.07c

17.40b

53.08a

26.08b

5.37

**

N retent./digest. N (%)

10.66c

29.31b

68.82a

36.73b

6.64

**

Nitrogen balance (mg/kg w0.75)

Nitrogen intake

360.52

429.99

444.13

427.80

17.68

NS

Fecal nitrogen

120.34b

174.58a

101.52b

124.11b

10.10

*

Urinary nitrogen

212.96a

180.10a

106.69b

192.07a

13.19

**

Digestible nitrogen

240.18

255.41

342.61

303.69

20.63

NS

Nitrogen retention

27.22c

75.31bc

235.92a

111.62b

24.39

**

N retent./N intake (%)

7.55c

17.51b

53.12a

26.09b

5.37

**

N retent./digest. N (%)

11.33c

29.49b

68.86a

36.75b

6.64

**

  1. a, b and c: Means in the same row with different superscripts are significantly different at (p < 0.01)
  2. SE, standard error; NS, nonsignificant difference
  3. *Significant difference at (p < 0.05), **Significant difference at (p < 0.01)