Status as of: 2020-01-14

Form GE

DESCRIPTION OF NATIONAL GENETIC EVALUATION SYSTEMS

Country (or countries)	SLOVENIJA	
Main trait group1
NOTE! Only one trait group per form!	LONGEVITY	
Breed(s)	HOL, SIM, BSW	
Trait definition(s) and unit(s) of measurement2
Attach an appendix if needed	Direct longevity: length of productive life (number of days from 1st calving to the culling or to the moment of data collection or till the end of sixth lactation). At the end of sixth lactation we marked records as censored.	
Method of measuring and collecting data	from milk recording data
	
Time period for data inclusion	Data before 01.01.2000 were cut.	
Age groups (e.g. parities) included	Parities 1 to 6. 	
Other criteria (data edits) for inclusion of records		
Criteria for extension of records (if applicable)		
Sire categories	AI	
Environmental effects3, pre-adjustments 	No	
Method (model) of genetic evaluation3	Direct longevity : ST S-MGS survival analysis model, applying a 
proportional hazard model with Weibull baseline hazard distribution.	
Environmental effects3 in the genetic evaluation model	F – age at first calving, stage of lactation within parity, yearly herd size deviation, season
R – herd, sire	
Adjustment for heterogeneous variance in evaluation model		
Use of genetic groups and relationships		
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	Genetic trend validation – method 3	
Expression of genetic evaluations
If standardised (e.g. RBV), give standardisation formula in the appendix	BV12=((BV-a)/b)*12+100
a – mean of BV
b – standard deviation of BV	
Definition of genetic reference base
Next base change	Population (bulls) average

Next evaluation	
Calculation of reliability	Yes	
Criteria for official publication of evaluations	20 daughters	
Number of evaluations / publications per year	3	
Use in total merit index4	HOL: Direct longevity 6%
BSW: Direct longevity 5%
SIM: Direct longevity 10%	
Anticipated changes in the near future		
Key reference on methodology applied	Web site: http://rodica.bf.uni-lj.si/govedo/	
Key organisation: name, address, phone, fax, e-mail, web site	University of Ljubljana, Biotechnical Faculty, Department of Animal Science, Groblje 3, 1230 Domzale, Slovenija
Tel. +386 1 3203 872 Fax: +386 1 7241 005
Jurij.Krsnik@bf.uni-lj.si, Klemen.Potocnik@bf.uni-lj.si 
	
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 LO

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

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

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Direct longevity	0.083	0.024	a=0 b=0.0835 c=12 d=100	
Combined longevity				

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

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Direct longevity	0.064	0.020	a=0 b=0.0793 c=12 d=100	
Combined longevity				

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

Trait	h2	genetic
variance	official proof
standardisation formulaa	
Direct longevity	0.065	0.020	a=0 b=0.0786 c=12 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.