Table 3 Effects of different forms of yeasts Saccharomyces cerevisiae on concentrations of serum urea nitrogen and hormones in piglets^a

Day 7

 GH, ng/mL

1.51

1.95

1.72

1.91

0.12

0.07

 T₃, ng/mL

0.86

1.20

1.10

1.12

0.09

0.10

 T₄, μg/L

63.30

78.88

73.65

73.98

3.81

0.08

 IGF-1, ng/mL

460.08

504.64

466.40

487.59

11.9

0.08

 Urea Nitrogen, mmol/L

5.66^c

4.68^e

5.17^d

4.63^e

0.15

0.001

Day 21

 GH, ng/mL

1.15^d

2.01^c

1.57^cd

1.91^c

0.14

0.004

 T₃, ng/mL

0.91^d

1.49^c

1.25^c

1.26^c

0.08

0.003

 T₄, μg/L

62.60^e

86.50^c

72.63^d

78.05^d

2.42

<0.001

 IGF-1, ng/mL

456.63^e

509.48^c

465.45^de

491.62^cd

10.3

0.01

 Urea Nitrogen, mmol/L

4.95^c

4.02^e

4.50^d

4.05^e

0.12

<0.001