Status as of:  2011-08-08

Form GE

DESCRIPTION OF NATIONAL GENETIC EVALUATION SYSTEMS

Country (or countries)	Korea	
Main trait group1
NOTE! Only one trait group per form!	Production	
Breed(s)	HOLstein	
Trait definition(s) and unit(s) of measurement2
Attach an appendix if needed	Milk(kg), fat(kg), protein(kg) on 305-day lactation basis	
Method of measuring and collecting data	All production data collected by official milk recording agencies using ICAR certified milk recording methods	
Time period for data inclusion	All lactation records from 2000 onwards are used	
Age groups (e.g. parities) included	First five lactations	
Other criteria (data edits) for inclusion of records	Allowed ranges of age of calving for first five lactations are   18- 42,   30-57,   42- 66,   54-78 and 66-90 months, respectively. Range of lactation length 70-305days.	
Criteria for extension of records (if applicable)	Shorter lactations are extended to 305-day using adjustment factors, which were determined based on the effects of herd-year, season, age at calving, and stage of lactation for production traits	
Sire categories	All categories of bulls are evaluated jointly.	
Environmental effects3, pre-adjustments 	No pre-adjustments for environmental effects	
Method (model) of genetic evaluation3	ST-ML-BLUP-AM	
Environmental effects3 in the genetic evaluation model	Fixed effects : herd-year-season effects and calving age classes for each  lactation. Random effects: animal additive genetic effect for each of the first five lactations.	
Adjustment for heterogeneous variance in evaluation model	Not implemented yet	
Use of genetic groups and relationships	Genetic group are defined for unknown parents of animal base on sex, year of birth and country of origin of the animal. At least ten generations of pedigree are traced back from the cows in multiple lactation data.	
Blending of foreign/Interbull information in evaluation	No	
Genetic parameters in the evaluation	Use Appendix GE for heritability/genetic variance estimates; for multiple-trait genetic evaluations, provide genetic correlation estimates between traits separately.
Use also appendices PR, CO, BCO, SM, LO, CA, as applicable, if you participate in the international genetic evaluations of Interbull	
System validation	Check on data quality (raw data, pedigree information, etc.)
Check on results : genetic trends, change in EBV between evaluations, stability of EBV over time, 
Interbull validation methods I and III  	
Expression of genetic evaluations
If standardised (e.g. RBV), give standardisation formula in the appendix	EBV (milk kg, fat kg, protein kg)	
Definition of genetic reference base
Next base change	EBV: stepwise 5-year cow base including all cows born in 2005
EBV: April 2015 with the base population including all cows born in 2010. 	
Calculation of reliability	Using multiple trait effective daughter contribution method	
Criteria for official publication of evaluations	Cows: lactation  records passed 70 days in milk for first lactation Bulls: daughters are distributed in at least 10 herds, and at least 50% reliability for protein yield	
Number of evaluations / publications per year	3 / April, August,  December	
Use in total merit index4	TEBV =(EBV1*0.45) + (EBV2*0.30) + (EBV3*0.20) + (EBV4*0.025) + (EBV5*0.025)
KTPI = (.5*(PTAF/SDPTAF) + 1.5*(PTAP/SDPTAP) + 1*(PTAT/SDPTAT) + 1*(UDC/SDUDC))*50 + 576
PTAT: final linear score , UDC : udder conformation 	
Anticipated changes in the near future	Introduction of genetic evaluation for conformation traits in 2012	
Key reference on methodology applied	Liu, Z., Reinhardt, F., Bünger, A., and Reents, R. 2004. Derivation and calculation of approximate reliabilities and daughter yield-deviations of random regression test-day model for genetic evaluation of dairy cattle. J Dairy Sci. 87:1896-1907. 	
Key organisation: name, address, phone, fax, e-mail, web site	National Institute of Animal Science(NIAS), RDA
Animal Genetic & Breeding Division
#9, Eoryong-ri, Seonghwan-eup, Cheonan-si, Chungnam 331-801, Korea
Phone : 82-41-580-3362
Fax : 82-41-580-3369
e-mail : ckh1219@korea.kr  web site : http:// www. nias.go.kr	
1) Either: Production (e.g. milk, fat, protein), Conformation, Health (e.g. mastitis resistance, milk somatic cell, resistance to diseases other than mastitis), Longevity, Calving (e.g. stillbirth, calving ease), Female fertility (e.g. non-return rate, interval between reproductive events, number of AI’s, heat strength), Workability (e.g. milking speed, temperament), Beef production, Efficiency (e.g. body weight, energy balance, body conditioning score), or Other traits.
2) Indicate frequencies per category if the trait is categorical and specify transformation of data if practiced.
3) Use abbreviations for most common effects (see document with list of abbreviations at http://www-interbull.slu.se/service_documentation/General/list_of_abbreviations.rtf) and indicate random (R) or fixed (F).
4) Please give economic weights and indicate how they are expressed (preferably in genetic standard deviation units).

 

Form GE	Appendix GE

Parameters used in genetic evaluation

Country (or countries):		
Main trait group:		
Breed (repeat as necessary):		

Trait	Definition	ITBa	h2b	genetic
varianceb	official proof
standardisation formulac	
Milk yield			.283	373,422		
						
Fat yield			.262	533.56		
						
Protein yield			.237	264.08		

						

						

						

						
a	Indicate, with X, traits that are submitted to Interbull for international genetic evaluations.
b	If repeated records are treated as separate traits, provide heritability estimates and genetic variances separately for each trait, as well as for all traits pooled, i.e. for the trait submitted to Interbull.
c	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.

Form GE	Appendix PR

Parameters for national genetic evaluations for production traits as provided to Interbull

Country (or countries):		
Main trait group:	Production	
Breed(s):		

Trait	h2a	genetic
variancea	official proof
standardisation formulab	
Milk yield:
	.28	373,422		
Fat yield:
	.26	533.56		
Protein yield:
	.24	264.08		
a	If lactations, or part of lactations, are treated as separate traits, provide heritability estimates and genetic variances separately for each lactation, as well as for all lactations pooled, i.e. for the trait submitted to Interbull.
b	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.

Form GE	Appendix CO

Parameters for national genetic evaluations for conformation traits as provided to Interbull
(all breeds except Brown Swiss)

Country (or countries):		
Main trait group:	Conformation	
Breed(s):		

Trait	Definition	h2a	genetic
variancea	official proof
standardisation formulab	
Stature					
Chest Width					
Body Depth					
Angularity					
Rump Angle					
Rump Width					
Rear Leg Set					
Rear Leg Rear View					
Foot Angle					
Fore Udder					
Rear Udder Height					
Udder Support					
Udder Depth					
Front Teat Placement					
Teat Length					
Rear Teat Placement					
Overall Conformation Score					
Overall Udder Score					
Overall Feet & Leg Score					
Locomotion					
Body Condition Score					
a	If repeated records are treated as separate traits, provide heritability estimates and genetic variances separately for each trait, as well as for all traits pooled, i.e. for the trait submitted to Interbull.
b	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.

Form GE	Appendix BCO

Parameters for national genetic evaluations for conformation traits as provided to Interbull

Country (or countries):		
Main trait group:	Conformation	
Breed:	Brown Swiss	

Trait	Definition	h2a	genetic
variancea	official proof
standardisation formulab	
Stature					
Chest width					
Body depth					
Angularity					
Rump angle					
Rump Width					
Rear Leg Side View					
Pasterns/Foot Angle					
Deep Heel (Hoof Height)					
Fore Udder Attachment					
Rear Udder Attachment Height					
Rear Udder Attachment Width					
Udder Support					
Udder Depth					
Front Teat Placement					
Teat Length					
Rear Teat Placement					
Overall Conformation Score					
Overall Udder Score					
Overall Feet & Leg Score					
Locomotion					
Body Condition Score					
a	If repeated records are treated as separate traits, provide heritability estimates and genetic variances separately for each trait, as well as for all traits pooled, i.e. for the trait submitted to Interbull.
b	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.

Form GE	Appendix SM

Parameters for national genetic evaluations for udder health traits as provided to Interbull

Country (or countries):		
Main trait group:	Health	
Breed(s):		

Trait	h2a	genetic
variancea	official proof
standardisation formulab	
Milk Somatic Cell:
				
Clinical Mastitis:
				
a	If repeated records are treated as separate traits, provide heritability estimates and genetic variances separately for each trait, as well as for all traits pooled, i.e. for the trait submitted to Interbull.
b	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.

Form GE	Appendix LO

Parameters for national genetic evaluations for longevity traits as provided to Interbull

Country (or countries):		
Main trait group:	Longevity	
Breed(s):		

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Direct longevity:
				
Combined longevity:
				
a	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.

Form GE	Appendix CA

Parameters for national genetic evaluations for calving traits as provided to Interbull

Country (or countries):		
Main trait group:	Calving Traits	
Breed(s):		

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Direct calving ease:
				
Maternal calving ease:
				
Direct stillbirth:
				
Maternal stillbirth:
				
a	Expressed as follows:
StandEval=((eval-a)/b)*c+d where a=mean of the base adjustment, b=standard deviation of the base, c=standard deviation of expression (include sign if scale is reversed), and d=base of expression.