Status as of: 2020-10-20

Form GE

DESCRIPTION OF NATIONAL GENETIC EVALUATION SYSTEMS

Country (or countries)	Poland	
Main trait group1
NOTE! Only one trait group per form!	Workability
	
Breed(s)	Polish Holstein-Friesian	
Trait definition(s) and unit(s) of measurement2	Milking speed is subjectively scored on a scale of 1 to 5 and temperament is scored on a scale of 1 to 3.	
Method of measuring and collecting data	Both traits by are scored in the first lactation of the cow at the second test-day by a classifier.	
Time period for data inclusion	cows born since 2006	
Age groups (e.g. parities) included	First parity cows	
Other criteria (data edits) for inclusion of records	known sire, age of first calving between 18 and 48 months	
Criteria for extension of records (if applicable)	None	
Sire categories	All groups of sires are included 	
Environmental effects3, pre-adjustments 	None	
Method (model) of genetic evaluation3	MT  BLUP ‑ AM	
Environmental effects3 in the genetic evaluation model	Linear and quadratic regression on age at calving, herd‑year‑season-classifier (F), lactation stage (F)	
Adjustment for heterogeneous variance in evaluation model	None	
Use of genetic groups and relationships	The genetic groups based on unknown parents, sex, birth year and percentage of HF	
Blending of foreign/Interbull information in evaluation	Foreign evaluations are not blended
	
Genetic parameters in the evaluation	see appendix.
	
System validation	Genetic trend estimation by method 3 recommended by the Interbull	
Expression of genetic evaluations
If standardised (e.g. RBV), give standardisation formula in the appendix	RBV, standardised BV with mean=100 and standard deviation=10	
Definition of genetic reference base
Next base change	Bulls born between 2009 and 2011 with at least 20 evaluated daughters in at least 10 herds
	
Calculation of reliability	Approximation using selection index method
	
Criteria for official publication of evaluations	AI sires with min.10 daughters	
Number of evaluations / publications per year	3 	
Use in total merit index4	None 	
Anticipated changes in the near future		
Key reference on methodology applied	1.Sire evaluation for dairy production traits. 1999. Instytut Zootechniki, Kraków, , vol.18,  
2.Boichard D., B. Bonaiti, A. Barbat, S. Mattalia. 1995. Three methods to validate the estimation of genetic trend for dairy cattle. J Dairy Sci, 78:431‑437	
Key organisation: name, address, phone, fax, e-mail, web site	National Research Institute of Animal Production
ul. Krakowska 1, 32-083 Balice,
Tel. (+4812) 2588 133,  (+4812) 2588 136; Fax (+4812) 285 67 33 
e-mail: izooinfo@izoo.krakow.pl
www.izoo.krakow.pl	
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):	Poland	
Main trait group:	Workability	
Breed (repeat as necessary):	Polish Holstein-Friesian	

Trait	Definition	ITB	h2	genetic
variance	official proof
standardisation formulac	
Milking speed	Score on scale of 1-5	X	0.12	0.03277	StandEval=(BV1)-mean2))/SD3))*10+100	
Temperament	Score on scale of 1-3	X	0.09	0.25190	as above	
1) MME solution for an animal
2) mean of base
3) SD of base