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== Guideline for Recording Feed Intake for Genetic Evaluation ==
== Introduction Feed and Gas ==
Text about the group


=== Introduction ===
Link to Feed intake Guidelines
The widespread use of genomic information in dairy cattle breeding programs has presented the opportunity to select for scares phenotypes of feed intake and feed efficiency. That means animals from research and commercial herds can serve as reference population to calibrate a genomic prediction equation. Genomic breeding values of selection candidates are then used to enhance genetic progress of feed intake and/or feed efficiency. Phenotypes for feed intake, however, are still an important limiting factor for obtaining high accurate breeding values and performing genetic analysis for feed intake and feed efficiency. Based on the experiences gained through several initiatives, we provide guidelines on the recording and handling of feed intake records for genomic and genetic evaluations.


=== Disclaimer ===
Link to Methane Guidelines
The fact that specific device manufacturers are mentioned in these guidelines is in no way an endorsement of the devices or their accuracy by ICAR.


=== Definitions and Terminology ===
== Objectives of the Feed and Gas Working Group ==
Table 1. Definitions of Terms used in the guideline of recording feed intake for genetic evaluation
The objectives of the Feed and Gas Working Groups are to:
 
# Provide a forum for members of ICAR and associated researchers to  collaborate, exchange information and learn from each other on all aspects of: recording and using dry matter intake data, and recording and using methane outputs data.
# Maintain, update, promote and extend universal guidelines for recording dry matter intake and methane output in cattle, sheep and goats world-wide
# Conduct and report the results of periodic international surveys on recording dry matter intake and methane output in cattle, sheep and goats worldwide.
# Develop, provide and promote a system and standards for data storage and genetic evaluation services which will form the basis of services that ICAR will provide to members of ICAR and their research associates on a user pays basis.
# Facilitate and cooordinate international collaboration in research and development on recording and using dry matter intake data, and recording and using methane outputs data.
 
== Members of ICAR Feed and Gas Working Group ==
Below are the members of the Feed and Gas Working Group listen in alphabetic order, including a short description.
{| class="wikitable"
{| class="wikitable"
|+
|+
!Term
!Researcher
!Definition
!Picture
|-
|DM
|Dry Matter
|-
|DMI
|Dry Matter Intake
|-
|EID
|Electronic identification device
|-
|FS
|Feed Saved
|-
|PMR
|Partial mixed ration
|-
|REML
|Restricted maximum likelihood
|-
|RFI
|Residual feed intake
|-
|TMR
|Total mixed ration
|-
|-
|
|
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|
|
|
|
|}
|-
|Name: Rasmus Bak Stephansen
Affiliation: Aarhus University, Center for Quantitative Genetics and Genomics
E-mail: rasmus.stephansen@qgg.au.dk
Homepage: https://pure.au.dk/portal/da/persons/rasmus.stephansen%40qgg.au.dk


=== Scope ===
Research topic:
Figure 1 illustrates the main elements of this guideline. The numbers in this figure refer to the chapter numbers of this guideline. The scope is to give guidelines of recording feed intake for genetic and genomic evaluations of feed intake and/or feed efficiency.


=== Acknowledgements ===
My research is dedicated to enhancing phenotyping and modeling of feed efficiency in livestock, with a specific emphasis on lactating animals. The challenges posed by the early lactation dilemma are a central focus, driving our efforts to develop robust modeling approaches. Furthermore, my investigation extends to unraveling the genetic architecture linking feed efficiency to methane emissions, as well as its impact on animal functionality and welfare. Through these multifaceted inquiries, I aim to contribute to a more sustainable and welfare-oriented livestock industry.
|[[File:Rasmus Skovgaard Stephansen.webp|thumb]]
|}
*
* Name, affiliation, picture, homepage, research topic
*
* Christine Baes
* Karoline Bakke
* Lorenzo Benzoni
* Raffaella Finocchiaro
* Maria Frizzarin
* Nina Krattenmacher
* Jan Lassen
* Jennie Pryce
* Caeli Richardson (2023 Brian Wickham Young Persons Exchange Program Bursary)
* Rasmus Bak Stephansen

Latest revision as of 11:20, 12 February 2024

Introduction Feed and Gas

Text about the group

Link to Feed intake Guidelines

Link to Methane Guidelines

Objectives of the Feed and Gas Working Group

The objectives of the Feed and Gas Working Groups are to:

  1. Provide a forum for members of ICAR and associated researchers to  collaborate, exchange information and learn from each other on all aspects of: recording and using dry matter intake data, and recording and using methane outputs data.
  2. Maintain, update, promote and extend universal guidelines for recording dry matter intake and methane output in cattle, sheep and goats world-wide
  3. Conduct and report the results of periodic international surveys on recording dry matter intake and methane output in cattle, sheep and goats worldwide.
  4. Develop, provide and promote a system and standards for data storage and genetic evaluation services which will form the basis of services that ICAR will provide to members of ICAR and their research associates on a user pays basis.
  5. Facilitate and cooordinate international collaboration in research and development on recording and using dry matter intake data, and recording and using methane outputs data.

Members of ICAR Feed and Gas Working Group

Below are the members of the Feed and Gas Working Group listen in alphabetic order, including a short description.

Researcher Picture
Name: Rasmus Bak Stephansen

Affiliation: Aarhus University, Center for Quantitative Genetics and Genomics E-mail: rasmus.stephansen@qgg.au.dk Homepage: https://pure.au.dk/portal/da/persons/rasmus.stephansen%40qgg.au.dk

Research topic:

My research is dedicated to enhancing phenotyping and modeling of feed efficiency in livestock, with a specific emphasis on lactating animals. The challenges posed by the early lactation dilemma are a central focus, driving our efforts to develop robust modeling approaches. Furthermore, my investigation extends to unraveling the genetic architecture linking feed efficiency to methane emissions, as well as its impact on animal functionality and welfare. Through these multifaceted inquiries, I aim to contribute to a more sustainable and welfare-oriented livestock industry.

  • Name, affiliation, picture, homepage, research topic
  • Christine Baes
  • Karoline Bakke
  • Lorenzo Benzoni
  • Raffaella Finocchiaro
  • Maria Frizzarin
  • Nina Krattenmacher
  • Jan Lassen
  • Jennie Pryce
  • Caeli Richardson (2023 Brian Wickham Young Persons Exchange Program Bursary)
  • Rasmus Bak Stephansen
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