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Supplementation by a commercial prebiotic «AVIATOR®» of broiler diet: Effect of breeding stages on performances and caecal microflora

Amani ASKRI1, Aziza RAACH-MOUJAHED1, Cyrine DAREJ1, Mohamed Salah ABBASSI2, Zied MAALAOUI3, Hajer DEBBABI1

I authorize the use and reproduction of any content, data and digital images in this presentation by CIHEAM-BARI, or anyone authorized by CIHEAM BARI 1

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Speaker

1Institut National Agronomique de Tunisie, Université de Carthage,

2Institut de Recherche Vétérinaire de Tunis, Université de Tunis El Manar

3Société Arm & Hammer Animal Nutrition, North Africa


INTRODUCTION

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Major handicap????

Soaring prices of red meat

Growing demand for white meat

Livestock intensification

Feed Costs Feed additives $


INTRODUCTION

Feed additives

Antibiotics

Essential oil

Enzymes Probiotics

Prebiotics


INTRODUCTION

Definition

• Prebiotics are non-digestible but fermentable food ingredients that beneficially affect the host by selectively stimulating the growth and/or activity of one or a limited number of bacteria in the colon (Gibson and Roberfroid, 1995).

Interests of prebiotics in animal nutrition

• Improve zootechnical performance: weight gain, feed conversion .

• Increase population of lactic acid bacteria and decrease pathogenic bacteria.

The aim of this study was to evaluate the effect of prebiotic « AVIATOR®» (Arm & Hammer) derived from Saccharomyces cerevisae cell wall, as a potential substitute of antibiotics as growth promoter in poultry industry, during different breeding period.


Materials and Methods One hundred and sixty male day-old chicks belonging to the “Arbor acres” strain were used in the described trials.

The chicks were individually identified, weighed and divided into three batches:

The first group was considered as a control and received a normal diet (D0).

The second group received D0 supplemented with the dose of 2g/kg of prebiotic for 42 days (P1).

The third group was fed D0 with the dose of 2 g of prebiotic during only the two first weeks (P2).


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Livestock building

AVIATOR® in powder form


Materials and Methods

The prebiotic used is marketed under the name « AVIATOR®» produced by the company "Arm and Hammer" of the group "Church & Dwight" (United States).

This supplement is based on yeast cultures and products of the enzymatic hydrolysis of the yeast wall: Saccharomyces cerevisiae.

Prebiotic

Arm & Hammer

Saccharomyces cerevisiae


Materials and Methods

Growth performance:

The animals were weighed individually each week at the same time, and the feed intake (FI) was

determined. The daily weight gain (DWG) and the feed conversion ratio (FCR) were calculated per week.

A daily record was performed for mortalities.

Study of caecal microflora:

Caecas were collected on 14, 21 and 42nd day.

The enumeration of lactic acid bacteria, total coliforms and Escherichia coli was determined according to the

culture description.


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Chicks in the cages

Sampling of caecas


Results and discussion

W1

W2

W3

W4

W5

W6

0

2 0

4 0

6 0

8 0

1 0 0

E ffe c t o n D W G

(W e e k )

(g)

D 0

P 1

P 2

d1

d7

d1 4

d2 1

d2 8

d3 5

d4 2

0

5 0 0

1 0 0 0

1 5 0 0

2 0 0 0

2 5 0 0

E ffe c t o n b o d y w e ig h t

(D a y )

(g)

D 0

P 1

P 2

• Over the growth period, BW was slightly higher with P1 compared to D0 and P2.

• The evolution of animal BW was not significantly affected by the administration of AVIATOR

during the breeding starter period as well as during the grower finisher period.



W1

W2

W3

W4

W5

W6

0

1

2

3

4

5

E ffe c t o n F C R

W e e k

D 0

P 1

P 2

• No significant difference

in FCR was recorded

between groups during

the starter period

supplmentation.

• FCR was significantly lower

with P1 during the third

week compared to others

groups.

The effect of prebiotics would be conditionned to its presence.



Study of the effect of Aviator supplementation on caecal microflora

A g e (d a y )

Lo

g1

0 U

FC

/g

J 14

J21

J42

4

5

6

7

8

9E .C o li (D 0 )

E .C o li (P 1 )

E .C o li (P 2 )

L a c to b a c ille s (D 0 )

L a c to b a c ille s (P 1 )

L a c to b a c ille s (P 2 )

C .T o ta u x (D 0 )

C .T o ta u x (P 1 )

C .T o ta u x (P 2 )

P<0.001

Ceacal microbiome was

significantly affected by

the supplementation of

AVIATOR in broiler diets,

during the breeding

starter period, as well as

during the grower finisher

period.

Significant increase: caecal

population lactobacillus P1,

P2.

Once the intestinal epithelia was colonized by lactobacillus they can survive and continue to grow

The effect of prebiotic persisted even when it was removed.



MOS +++ Beneficial bacteria:

Lactobacillus Bifidobactria

Inhibits attachment of pathogenic bactéria

Improve gut health

(Source: Baurhoo et al. , 2007

Patterson et al., 2003)

Reduction of Enterobacteria

Competitive exclusion

Lactic acid production

Acidification of the intestinal environment

Food source


Conclusions

Improve gut health Aviator protects against harmful pathogens such as E. coli. It improves nutrient digestibility and helps birds maintain performance,

Promote growth without antibiotics Aviator has shown consistent performance in broilers to improve feed conversion. This means lower feed costs or increased weight gain in a shorter time. Aviator can improve performance and reduce the cost of meat produced.

Good gut health allows for efficient nutrient absorption.

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Our study showed that beneficial effects of prebiotics supplementation in poultry diet lead to a better protection of the animal

against pathogens, when the prebiotic was added throughout the breeding period.

Thank You TUNIS 1082, Tunisia

askria. ing@gmail. com

0021652497557

AMANI ASKRI

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