Use of esterified palm acid oils with different acylglycerol

structure in fattening pig dietsE. VILARRASA*, A.C. BARROETA, and E. ESTEVE-GARCIA

*ester.vilarrasa@uab.cat

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

ACID OIL

NATIVE OIL

GLYCEROL

Chemicalesterification

ESTERIFIED ACID OILS

↓ cost

BIODIESELRefinementMethylation

TAG

FFA

TAG DAG MAG

↓ FA absorption

↑ cost

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

ACID OIL

NATIVE OIL

ESTERIFIED ACID OILS

TAG

FFA

TAG DAG MAG

= FA composition

? FA absorption

= FA composition ≠ acylglycerol composition ↑ MAG and DAG

= FA composition ≠ acylglycerol composition ↑ MAG and DAG

≠ FA positional distribution ↑ sn-2 SFA

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

↑ MAG and DAGNATIVE OIL

ESTERIFIED ACID OIL

Pancreatic lipase

Emulsification Hydrolysis

TAGDAG

MAG

FFA FFA

Pancreatic lipase

DAGMAG

FFA

Solubilization

Bilesalts

Bilesalts

FA absorption

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

↑ sn-2 SFANATIVE OIL

SFA

UFA

UFA

sn-1

sn-2

sn-3

SFA

UFA

UFA

sn-1

sn-2

sn-3

Pancreaticlipase

ESTERIFIED ACID OIL

UFA

UFA

SFA

+ Ca2+

SFA

UFAUFA

FecesMixed m

icellesMixed m

icelles

FA absorption

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Investigate the potential use of ESTERIFIED PALMACID OILS, differing in their acylglycerol structure, incomparison with their corresponding ACID andNATIVE OILS in fattening pig diets, studying theireffects on:

FA apparent absorption Growth performance Backfat FA composition

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Experimental diets: Basal diet supplemented with 4% of:

P-N Native palm oilP-A Acid palm oilP-EL Esterified palm acid oil low in MAG and DAGP-EH Esterified palm acid oil high in MAG and DAG

52.5

51.1

50.8

49.1

38.7

39.4

39.1

40.5

8.79

9.49

10.1

10.4

0 20 40 60 80 100

P-EH

P-EL

P-A

P-N

FA composition (%)

SFAMUFAPUFA

11.6

17.6

6.92

8.33

19.1

24.8

11.4

51.4

19.0

24.8

11.2

58.4

0 20 40 60 80 100

P-EH

P-EL

P-A

P-N

FA positional distribution (%)

sn-2 SFASFAsn-2 MUFAMUFAsn-2 PUFAPUFA

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Experimental diets: Basal diet supplemented with 4% of:

P-N Native palm oilP-A Acid palm oilP-EL Esterified palm acid oil low in MAG and DAGP-EH Esterified palm acid oil high in MAG and DAG

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Experimental diets: Basal diet supplemented with 4% of:

P-N Native palm oilP-A Acid palm oilP-EL Esterified palm acid oil low in MAG and DAGP-EH Esterified palm acid oil high in MAG and DAG

11.8

41.9

16.3

87.5

45.8

44.3

22.3

7.72

42.4

12.6

8.26 53.2

4.04

0 20 40 60 80 100

P-EH

P-EL

P-A

P-N

Acylglycerol composition (%)

TAGDAGMAGFFA

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Experimental diets: Basal diet supplemented with 4% of:

P-N Native palm oilP-A Acid palm oilP-EL Esterified palm acid oil low in MAG and DAGP-EH Esterified palm acid oil high in MAG and DAG

Animals:72 boars and gilts ([Landrace x Duroc] xPietrain) of 24.7 ± 2.55 kg.Blocked by initial BW within sexes.Housed in adjacent individual boxes.

Controls and sampling:

Starter(~25-50 kg)

Grower(~50-75 kg)

Finisher(~75-100 kg)

Statistical analysis: Randomized complete block design(GLM procedure of )

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

FA apparent absorption

b

b

b

b

b

aba

a

aa

a

a

40

50

60

70

80

90

100

Total FA SFA MUFA PUFA

Total

trac

tapp

aren

tabs

orpti

on(%

)

P-NP-AP-ELP-EH

P < 0.001

P < 0.001

P = 0.003P = 0.86

P-N = P-A

P-EL and P-EH > P-N and P-A

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

FA apparent absorption

b

b

b

b

b

aba

a

aa

a

a

40

50

60

70

80

90

100

Total FA SFA MUFA PUFA

Total

trac

tapp

aren

tabs

orpti

on(%

)

P-NP-AP-ELP-EH

P < 0.001

P < 0.001

P = 0.003P = 0.86

↑ sn-2 SFA

↑ MAG and DAG

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Growth performance

1900

1950

2000

2050

2100

P-N P-A P-EL P-EH

ADFI (g/day per pig)

700

750

800

850

900

P-N P-A P-EL P-EH

ADG (g/day per pig)

abb

aba

0.350.370.390.410.430.45

P-N P-A P-EL P-EH

G:F (g/g)P = 0.47 P = 0.23

P = 0.003

P-EH > P-A

Related to total FA apparent absorption

b b aba

0

5

10

15

20

25

30

35

40

45

50

SFA MUFA PUFA

FA co

mpos

ition (

%)

P-NP-AP-ELP-EH

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Backfat FA composition

P = 0.09

P = 0.62

P = 0.031

P-EH > P-N and P-A

Related to SFA apparent absorption

Introduction

Hypothesis

Objective

Material and Methods

Results and Discussion

Conclusion

Esterified palm acid oils achieved higher total FAapparent absorption than their corresponding nativeand acid oils, mainly due to the increased SFAapparent absorption.

This resulted to an improved G:F ratio and anincreased SFA deposition in backfat of pigs fed P-EHwhen compared to those fed P-A.

Esterified palm acid oils can be used in fattening-pig diets as an economically interestingalternative to native and acid palm oils.

Thank you!ester.vilarrasa@uab.cat