User:Rstephansen/sandbox - Revision history

Rstephansen at 11:20, 12 February 2024

2024-02-12T11:20:29Z

← Older revision		Revision as of 11:20, 12 February 2024
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	Research topic:		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.
	\|[[File:Rasmus Skovgaard Stephansen.webp\|thumb]]		\|[[File:Rasmus Skovgaard Stephansen.webp\|thumb]]
	\|}		\|}

Rstephansen at 10:54, 9 February 2024

2024-02-09T10:54:27Z

← Older revision		Revision as of 10:54, 9 February 2024
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	== Introduction Feed and Gas ==		== Introduction Feed and Gas ==
	Text		Text about the group

	~~link~~		Link to Feed intake Guidelines

	~~link~~		Link to Methane Guidelines

	== Objectives of the Feed and Gas WG ==		== Objectives of the Feed and Gas Working Group ==
	The objectives of the Feed and Gas WG are to:		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.		# 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.
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	# Facilitate and cooordinate international collaboration in research and development on recording and using dry matter intake data, and recording and using methane outputs data.		# 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 ==		== 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"
			\|+
			!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:
			\|[[File:Rasmus Skovgaard Stephansen.webp\|thumb]]
			\|}
			*
	* Name, affiliation, picture, homepage, research topic		* Name, affiliation, picture, homepage, research topic
	*		*

Rstephansen at 08:39, 9 February 2024

2024-02-09T08:39:33Z

← Older revision		Revision as of 08:39, 9 February 2024
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	== Members ==		== Members ==

			* Name, affiliation, picture, homepage, research topic
			*
	* Christine Baes		* Christine Baes
	* Karoline Bakke		* Karoline Bakke

Rstephansen at 08:34, 9 February 2024

2024-02-09T08:34:46Z

← Older revision		Revision as of 08:34, 9 February 2024
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	== ~~Guideline for Recording~~ Feed ~~Intake for Genetic Evaluation~~ ==		== Introduction Feed and Gas ==
			Text

	~~== Introduction ==~~		link
	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 quality control of feed intake records for genomic and genetic evaluations.

	~~== Disclaimer ==~~		link
	~~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 WG ==
	~~Table 1. Definitions~~ of ~~Terms used in~~ the ~~guideline of recording feed intake for genetic evaluation~~		The objectives of the Feed and Gas WG are to:
	~~{\| class="wikitable"~~
	\|+
	~~!Term~~
	~~!Definition~~
	\|-
	~~\|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~~
	\|}

	~~== Scope ==~~		# 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.
	~~The scope here is to provide~~ guidelines for of recording ~~feed~~ intake ~~for genetic~~ and ~~genomic evaluations~~ of ~~feed~~ intake and~~/or feed efficiency~~. ~~Figure 1 illustrates~~ the ~~main elements~~ of ~~the guidelines~~ and ~~links for~~ a ~~detailed description can be found below~~.		# 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.

	== ~~Sub-sections~~ ==		== Members ==

	* ~~Setting up feed intake recording schemes~~		* Christine Baes
	* ~~Recording intake indoors and at pasture~~		* Karoline Bakke
	* Phenotypes to support feed intake in feed efficiency evaluations		* Lorenzo Benzoni
	* ~~Utilizing existing feed intake data nationally and internationally~~		* Raffaella Finocchiaro
	* ~~Quality control of feed intake data~~		* Maria Frizzarin
	*		* Nina Krattenmacher
			* Jan Lassen
	~~== Acknowledgements ==~~		* Jennie Pryce
	~~Authors of the document are, in alphabetical order:~~		* Caeli Richardson (2023 Brian Wickham Young Persons Exchange Program Bursary)
			* Rasmus Bak Stephansen
	''Maria Frizzarin~~, Teagasc, Ireland''~~

	~~''Birgit Gredler-Grandl, Wageningen Livestock Research, Netherlands''~~

	''Jan Lassen~~, VikingGenetics & Aarhus University, Denmark''~~

	''Rasmus Bak Stephansen~~, Aarhus University, Denmark''~~

	~~''Karoline Bakke Wethal, Geno, Norway''~~

Rstephansen: /* Sub-sections */

2023-12-12T13:49:06Z

Sub-sections

← Older revision		Revision as of 13:49, 12 December 2023
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	== Introduction ==		== Introduction ==
	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.		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 quality control of feed intake records for genomic and genetic evaluations.

	== Disclaimer ==		== Disclaimer ==
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	== Sub-sections ==		== Sub-sections ==
	~~Links~~
			* Setting up feed intake recording schemes
			* Recording intake indoors and at pasture
			* Phenotypes to support feed intake in feed efficiency evaluations
			* Utilizing existing feed intake data nationally and internationally
			* Quality control of feed intake data
			*

	== Acknowledgements ==		== Acknowledgements ==

Rstephansen at 11:42, 12 December 2023

2023-12-12T11:42:01Z

← Older revision		Revision as of 11:42, 12 December 2023
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	== Guideline for Recording Feed Intake for Genetic Evaluation ==		== Guideline for Recording Feed Intake for Genetic Evaluation ==

	=== Introduction ===		== Introduction ==
	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.		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 ===		== Disclaimer ==
	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.		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 ===		== Definitions and Terminology ==
	Table 1. Definitions of Terms used in the guideline of recording feed intake for genetic evaluation		Table 1. Definitions of Terms used in the guideline of recording feed intake for genetic evaluation
	{\| class="wikitable"		{\| class="wikitable"
Line 37:		Line 37:
	\|TMR		\|TMR
	\|Total mixed ration		\|Total mixed ration
	\|-
	\|
	\|
	\|-
	\|
	\|
	\|}		\|}

	=== Scope ===		== Scope ==
	~~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.		The scope here is to provide guidelines for of recording feed intake for genetic and genomic evaluations of feed intake and/or feed efficiency. Figure 1 illustrates the main elements of the guidelines and links for a detailed description can be found below.

	=== Sub-sections ===		== Sub-sections ==
	Links		Links

	=== Acknowledgements ===		== Acknowledgements ==
			Authors of the document are, in alphabetical order:

			''Maria Frizzarin, Teagasc, Ireland''

			''Birgit Gredler-Grandl, Wageningen Livestock Research, Netherlands''

			''Jan Lassen, VikingGenetics & Aarhus University, Denmark''

			''Rasmus Bak Stephansen, Aarhus University, Denmark''

			''Karoline Bakke Wethal, Geno, Norway''

Rstephansen at 11:26, 12 December 2023

2023-12-12T11:26:43Z

← Older revision		Revision as of 11:26, 12 December 2023
Line 47:		Line 47:
	=== Scope ===		=== Scope ===
	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.		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.

			=== Sub-sections ===
			Links

	=== Acknowledgements ===		=== Acknowledgements ===

Rstephansen at 11:25, 12 December 2023

2023-12-12T11:25:20Z

← Older revision		Revision as of 11:25, 12 December 2023
Line 47:		Line 47:
	=== Scope ===		=== Scope ===
	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.		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 ===

Rstephansen at 11:24, 12 December 2023

2023-12-12T11:24:18Z

← Older revision		Revision as of 11:24, 12 December 2023
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	== Guideline for Recording Feed Intake for Genetic Evaluation ==		== Guideline for Recording Feed Intake for Genetic Evaluation ==

	=== ~~Grass based~~ ===		=== Introduction ===
	~~[https:/~~/~~doi~~.~~org/10~~.~~3168/jds~~.~~S0022-0302(03)73976-9]~~		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.
	~~#Fist Item~~
	~~# Second Item~~
	* Bulleted list item

	~~<math>~~		=== Disclaimer ===
	~~R_W~~ = ~~\frac{W_t - W_B}{A_t}\times 200 + W_B~~		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.
	~~</math>~~

	{\| class="wikitable"		=== Definitions and Terminology ===
	\|~~- style="font-weight:bold;"~~		Table 1. Definitions of Terms used in the guideline of recording feed intake for genetic evaluation
	!~~<br />~~Term		{\| class="wikitable"
	!~~<br />~~Definition		\|+
			!Term
			!Definition
	\|-		\|-
	\|~~<br />~~DM		\|DM
	\|~~<br />~~Dry Matter		\|Dry Matter
	\|-		\|-
	\|~~<br />~~DMI		\|DMI
	\|~~<br />~~Dry Matter Intake		\|Dry Matter Intake
	\|-		\|-
	\| ~~<br />~~EID		\|EID
	\|~~<br />~~Electronic identification device		\|Electronic identification device
	\|-		\|-
	\|~~<br />~~FS		\|FS
	\|~~<br />~~Feed Saved		\|Feed Saved
	\|-		\|-
	\|~~<br />~~PMR		\|PMR
	\|~~<br />~~Partial mixed ration		\|Partial mixed ration
	\|-		\|-
	\|~~<br />~~REML		\|REML
	\|~~<br />~~Restricted maximum likelihood		\|Restricted maximum likelihood
	\|-		\|-
	\| ~~<br />~~RFI		\|RFI
	\|~~<br />~~Residual feed intake		\|Residual feed intake
	\|-		\|-
	\|~~<br />RIC~~		\|TMR
	\|~~<br />Roughage intake control system~~		\|Total mixed ration
	\|-		\|-
	\|~~<br />TMR~~		\|
	\|~~<br />Total mixed ration~~		\|
			\|-
			\|
			\|
	\|}		\|}

			=== Scope ===
			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.

Rstephansen at 11:17, 12 December 2023

2023-12-12T11:17:17Z

← Older revision		Revision as of 11:17, 12 December 2023
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			== Guideline for Recording Feed Intake for Genetic Evaluation ==
	==Feed Intake ~~Recording~~==

	=== Grass based ===		=== Grass based ===