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Table 2 Effect of diet (D) and period (P) on volatile fatty acid (VFA) levelsa in rumen fluid

From: Examination of the molecular control of ruminal epithelial function in response to dietary restriction and subsequent compensatory growth in cattle

 

RES

ADLIB

Significance

Period 1

Period 2

Period 1

Period 2

SEMb

D

P

D*Pc

Molar Proportions, mmol/L VFA

Acetic Acid

60.9

67.79

52.14

77.57

6.875

0.942

0.024

0.186

Propionic Acid

13.98

28.44

20.1

34.75

2.506

0.018

<0.001

0.968

N-Butyric Acid

10.5

11.09

6.02

13.84

1.895

0.653

0.033

0.064

Iso-Butyric Acid

1.84

0.15

1.1

0.54

0.202

0.351

<0.001

0.562

N-Valeric Acid

0.88

2.18

1.38

2.87

0.261

0.029

<0.001

0.708

Iso-Valeric Acid

2.31

1.55

2.31

1.97

0.244

0.386

0.029

0.388

Total, mmol/L VFA

90.42

111.18

83.04

131.55

9.831

0.513

0.001

0.167

Acetate:Propionate Ratio

4.4

2.4

2.6

2.2

    
  1. aRuminal fluid samples were taken from 5 different points within the rumen of each bull at slaughter and VFA levels were measured using an automated gas chromatograph
  2. bSEM, standard error of the mean
  3. cD*P, diet × period interaction
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891