Status as of: 2022-04-20

Form GE

DESCRIPTION OF NATIONAL GENETIC EVALUATION SYSTEMS

Country (or countries)	JAPAN	
Main trait group1
NOTE! Only one trait group per form!	Longevity	
Breed(s)	Holstein	
Trait definition(s) and unit(s) of measurement2
Attach an appendix if needed	Survival to the next stage (9 stages in 3 lactations)	
Method of measuring and collecting data	Calculated from milk recording data	
Time period for data inclusion	Test day records from 1985	
Age groups (e.g. parities) included	First three lactations	
Other criteria (data edits) for inclusion of records		
Criteria for extension of records (if applicable)		
Sire categories	All sires(practically no NS)	
Environmental effects3, pre-adjustments 	No	
Method (model) of genetic evaluation3	ST BLUP RP AM	
Environmental effects3 in the genetic evaluation model	Fixed effects: Herd-Year-Month, Parity-Stage, and Age of first calving	
Adjustment for heterogeneous variance in evaluation model	No	
Use of genetic groups and relationships	Unknown parents grouped by sex and birth year	
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		
Expression of genetic evaluations
If standardised (e.g. RBV), give standardisation formula in the appendix	SBV	
Definition of genetic reference base
Next base change	5-year stepwise, average EBV of cows born in 2015

2025	
Calculation of reliability		
Criteria for official publication of evaluations	Must have both ≧15 daughters in ≧10 herds for both production and conformation. Recognized bulls by the national dairy sire progeny test program only. Interbull evaluations are published for foreign bulls with reliability >=75(milk) and >=60(overall conformation), however, treated as unofficial.	
Number of evaluations / publications per year	2/2, February, August	
Use in total merit index4		
Anticipated changes in the near future		
Key reference on methodology applied		
Key organisation: name, address, phone, fax, e-mail, web site	National evaluation center: National Livestock Breeding Center, IAI
1 Odakurahara, Nishigo, Nishi-Shirakawa, Fukushima, 961-8511, JAPAN
Tel: +81-248-25-4904
Fax: +81-248-25-3982
Web: http://www.nlbc.go.jp/
Contact: data analysis div. to: nlbc_japan@nlbc.go.jp	
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):	JAPAN	
Main trait group:	Longevity	
Breed (repeat as necessary):	Holstein	

Trait	Definition	ITBa	h2b	genetic
varianceb	official proof
standardisation formulac	
Direct longevity:		X	0.051	0.00739	b = 0.0430, d = 100	
						
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 LO

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

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

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Direct longevity:
	0.051	0.00739	b = 0.0430, d = 100	
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.

Form GE	Appendix CA

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

Country (or countries):		
Main trait group:	Female Fertility	
Breed(s):		

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Heifer conception
				
Cow recycling
				
Lactating cows ability to conceive (1)
				
Lactating cows ability to conceive (2)				
Interval traits
				
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 LO

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

Country (or countries):		
Main trait group:	Workability traits	
Breed(s):		

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Milking Speed
				
Temperament
				
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.