Table 4 Blood and rumen metabolites of growing camel calves fed different concentrate levels in the diet, along with ad lib alfalfa hay

Total protein, g/ dl

5.34^b

5.78^ab

6.14^a

0.272

P < 0.05

Urea, mg/ dl

38.5^b

44.2^a

45.4^a

1.74

P < 0.05

Blood urea nitrogen, mg/ dl

18.0^b

20.7^a

21.2^a

0.80

P < 0.05

Creatinine, mg/ dl

1.60

1.60

1.62

0.114

P > 0.05

Rumen parameters

pH

6.24^a

5.54^b

5.34^b

0.11

P < 0.05

Ammonia, mg/dl

36.9^c

42.3^b

45.0^a

0.84

P < 0.05

Volatile fatty acids, m.eq/dl

19.8^b

25.2^ab

28.0^a

2.81

P > 0.05