Table 1

Mean plasma metabolites and hormones concentrations in calves over the final 6 hours of a five day intravenous infusion of saline (control); glucose; essential amino acids (EAA) and glucose + EAA.


Control
Glucose
EAA
EAA+Glucose

Glucose mmol/L
4.1a ± 0.20
5.5bc ± 0.17
4.4ac ± 0.14
5.3c ± 0.20
Insulin ng/ml
0.6a ± 0.03
1.1b ± 0.10
0.6a ± 0.05
0.9a ± 0.10
IGF – 1 ng/ml
38.8a ± 5.5
67.2c ± 6.03
47.4ac ± 3.93
80.0b ± 6.55
GH ng/ml
5.4a ± 0.81
5.8a ± 0.50
4.7a ± 0.50
5.3a ± 0.34

Values are averages of 6 blood samples taken at hourly intervals except for GH where samples were collected every 15 min during the last 6 hours of the infusion. Values are means ± standard error of the mean (SEM). a,b,c Values within the same row with different superscripts are significantly different (P < 0.05)

Sadiq et al. Nutrition & Metabolism 2008 5:5   doi:10.1186/1743-7075-5-5