Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

  • Cookies strictly necessary for the proper functioning of the site
  • Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie


Shelf life

CAS and PHP session cookies

Login credentials, session security



Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie


Shelf life


Trace the visitor's route in order to establish visit statistics.

13 months


Store the anonymous ID of the visitor who starts the first time he visits the site

13 months


Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.

13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

  • The data collected are not cross-checked with other processing operations
  • The deposited cookie is only used to produce anonymous statistics
  • The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

  • to offer interactive content;
  • improve usability and facilitate the sharing of content on social networks;
  • view videos and animated presentations directly on our website;
  • protect form entries from robots;
  • monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at or by post at :


24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal Institut Agro Rennes-Angers

Home page

Regulation and prediction of intake of grazing dairy goats

Thesis : regulation and prediction of intake of grazing dairy goats
Understand and predict variations of intake of grazing dairy goats in link to different grazing management techniques.

Grazing: an action way to strengthen food autonomy in goat farms

Goats farms of main French area of productions including Poitou-Charentes (31% of national dairy goats, Agreste, 2012a), work mainly with food systems based on conserved forage and a high consumption of concentrates (2010: only 8% of goats had access to pasture, Agreste, 2012b). Today the cost of inputs is increasing while the price of goat milk tends to stabilize or even decreasing. Plus the specification of products under a protected origin appellation, the development of organic farms and the costumers demand for a production the most natural possible.  In these contexts, promote the development of grazing would strengthen the autonomy in forage and protein of systems and thus the economic sustainability of farms but also environmental sustainability while promoting the image of the products in the goat sector.
In complementarity of livestock research conducted by Idele (ferme du Pradel) and systemic research conducted by Inra (Patuchev program of EU Ferlus, Lusignan) on goats to pasture, the UMR Pegase is committed to understanding the regulation of intake and the adaptability of dairy goats through more analytical experiments. Insert into two research projects, one national (Casdar Cap'Herbe, 2016-2018) and another regional (PSDR Go Fleche, 2015-2019), this thesis program have for aims to develop the basis for a prediction model of grazing intake compatible with Inra feeding systems for ruminants, integrated to Inration software.

Paturage chèvre

Aims of the thesis

Understand and estimate intake variations dairy goats grazing in relation to the different grazing management techniques, to anticipate responses in terms of milk production and goat’s behavior. This will make it possible to adapt the grazing management and rationalization of the supply of grazing goat herds.
For this, according to the knowledge acquired with the bibliography, we would answer the following questions:

  • What are intake and production response laws to the herbage allowance, which defines both the performance per animal and per hectare?     
  • What is the influence of other management elements (complementation, daily access time to pasture, organization of the day) on this response?    
  • What are the behavioral mechanisms involved and the individual adaptability of goats?

Alexia Charpentier has been working on this thesis which is co-funded by Inra Phase and Poitou-Charentes Region, since 1st november 2015 for a period of 3 years. She is framed by Rémy Delagarde in Syslait team, Francois Gastal and Hugues Caillat of UE Ferlus (Lusignan).


Alexia Charpentier  alexia.charpentier[at] (PhD sutdent)
François Gastal  françois.gastal[at] (supervisor)
Rémy Delagarde  remy.delagarde[at] (co-supervisor)
Hugues Caillat  hugues.caillat[at] (co-supervisor)

Bibliography [in french]

  • Agreste, 2012b. L’élevage caprin : hausse du coût des aliments, baisse du prix du lait ; des exploitations caprines à l’épreuve. Agreste Poitou-Charentes 13, 4p. [Link in french]
  • Agreste, 2012a. Recensement agricole 2010. L’élevage caprin : production caprine, vers une concentration et une productivité toujours plus fortes. Agreste Poitou-Charentes 12, 4p. [Link in french]