# Would a shift to agroecological systems change dairy products' role in meeting human nutritional needs?

L. Rey-Cadilhac, Aziz Mouhanna, Stefaan de Smet, Catherine Hurtaud, Emmanuelle Kesse-Guyot, Bruno Martin

► To cite this version:

L. Rey-Cadilhac, Aziz Mouhanna, Stefaan de Smet, Catherine Hurtaud, Emmanuelle Kesse-Guyot, et al. Would a shift to agroecological systems change dairy products’ role in meeting human nutritional needs?. World Dairy Summit, Oct 2024, Paris, France. 2024. [hal-04697088](https://hal.inrae.fr/hal-04697088v1)

HAL Id: hal-04697088

https://hal.inrae.fr/hal-04697088v1

Submitted on 13 Sep 2024

HAL is a multi-disciplinary open access
archive for the deposit and dissemination of sci-
entific research documents, whether they are pub-
lished or not. The documents may come from
teaching and research institutions in France or
abroad, or from public or private research centers.

L'archive ouverte pluridisciplinaire HAL, est
destinée au dépôt et à la diffusion de documents
scientifiques de niveau recherche, publiés ou non,
émanant des établissements d'enseignement et de
recherche français ou étrangers, des laboratoires
publics ou privés.

<figure><img src="image_1.png" /></figure>

Distributed under a Creative Commons Attribution 4.0 International License
<figure><img src="image_2.png" /></figure>

# WOULD A SHIFT TO AGROECOLOGICAL SYSTEMS CHANGE DAIRY PRODUCTS' ROLE IN MEETING HUMAN NUTRITIONAL NEEDS?

Lucille REY-CADILHACª, Aziz MOUHANNAᵇ, Stefaan DE SMETᵇ, Catherine HURTAUDª, Emmanuelle KESSE-GUYOTᶜ, Bruno MARTINᵈ

ªPEGASE, INRAE, Institut Agro, Saint-Gilles, France; ᵇGhent Univ., Dpt Animal Sciences and Aquatic Ecology, Ghent, Belgium; ᶜUniv. Sorbonne Paris Nord and Univ. Paris Cité, Inserm, INRAE, CNAM, CRESS, EREN, Bobigny, France; ᵈUCA, INRAE, VetAgro Sup, UMR1213 Herbivores, Saint-Genès-Champanelle, France

## INTRODUCTION

Lever for tackling environmental challenges = farm agroecological transition

BUT unknown impact of this transition on contribution of dairy products to meeting human nutritional requirements

Aim of this study = to characterize the evolution of the population reference intake coverage by dairy products in France, when transitioning from conventional corn-based systems to organic grass-based systems.

<figure><img src="image_3.png" /></figure>

$$ \frac{\pm x \% \text{ of nutrient}}{\text{needs covered?}} $$

<figure><img src="image_4.png" /></figure>

## METHODS

Calculation of the contribution of dairy products to nutrient recommended dietary intake according to the farming system (considering constant dairy consumption & all the milk produced with a same farming system)

<figure><img src="image_5.png" /></figure>

INCA3, 2017; EFSA, 2019; WHO, 2023

<figure><img src="image_6.png" /></figure>

## RESULTS

Switching from a conventional corn-based to an organic grass-based system...

... had no major impact on the contribution of dairy products to meeting dietary reference values for minerals & vitamins B2/E

... tripled the contribution of dairy products to meeting dietary reference values for essential FA and trans FA*

*Limitation of trans FA in EU references

<figure><img src="image_7.png" /></figure>

Products taken into account (no or minor effect of process on nutrient content)

<figure><img src="image_8.png" /></figure>

Population dietary reference value covered by dairy products (%)

<figure><img src="image_9.png" /></figure>

<figure><img src="image_10.png" /></figure>

## CONCLUSION & PERSPECTIVES

<figure><img src="image_11.png" /></figure>

No major impact on minerals & B2/E vitamins
→
+++ Essential FA coverage (but ++ trans FA)

<figure><img src="image_12.png" /></figure>

To be continued with other vitamins/oligo-minerals & other animal-based products