Status as of: 2019-08-12

Form GE

DESCRIPTION OF NATIONAL GENETIC EVALUATION SYSTEMS

Country (or countries)	Czech Republic	
Main trait group1
	Female Fertility	
Breed(s)	Holstein	
Trait definition(s) and unit(s) of measurement2
Attach an appendix if needed	Conception Rate (CR)
(pregnant (1) or non-pregnant (0) after 3 month from insemination)	
Method of measuring and collecting data	Rectal examination of pregnancy. Data collected by AI service technicians	
Time period for data inclusion	Inseminations since 1.1.1996 for heifers, 31.7.2002 for cows 	
Age groups (e.g. parities) included	Maiden Heifers: 0
Lactating cows: first three parities	
Other criteria (data edits) for inclusion of records	First three inseminations. Donors and recipients are excluded with all related reproduction cycle.	
Criteria for extension of records (if applicable)	none	
Sire categories	All AI bulls. 	
Environmental effects3, pre-adjustments 	None	
Method (model) of genetic evaluation3	Single trait BLUP animal model	
Environmental effects3 in the genetic evaluation model	Heifers: HYS of insemination(F), HYS of birth(F), Insemination order(F), Age at AI(F), AI technician per year(R), Bull used for AI(R). All effects discontinuous.
Cows: HYS of insemination(F), HYS of previous calving(F), Insemination order(F), Age of first calving(F), parities order(F), AI technician per year(R), Days in milk(F), kg milk in first 100 days in current lactation(F), Bull used for AI(R). All effects discontinuous.	
Adjustment for heterogeneous variance in evaluation model	none	
Use of genetic groups and relationships	Phantom parent groups are defined according to year of birth and country of origin.	
Blending of foreign/Interbull information in evaluation	none	
Genetic parameters in the evaluation	Heifers: h2=0.039
Cows: h2=0.044	
System validation	Check of input data and results	
Expression of genetic evaluations
If standardised (e.g. RBV), give standardisation formula in the appendix	RBV standardized with mean = 100 and SD = 12	
Definition of genetic reference base
Next base change	Average of all bulls born in 2010	
Calculation of reliability	R = Sw / (Sw + K) 
Where: Sw = effective number of inseminations
             K = (4 – h2) / h2	
Criteria for official publication of evaluations	Heifers: R >= 0.3
Cows: R >= 0.45	
Number of evaluations / publications per year	6	
Use in total merit index4	TMI = 0.49*Production + 0.15*Fertility + 0.07*UdderHealth + 
  + 0.05*Longevity + 0.24*Conformation
TMI = 0.225*ProteinKG + 0.115*FatKG + 0.11*Protein% + 
  + 0.04*Fat% + 0.075* heifersCR+ 0.075*CowCR +   
  + 0.07*SomaticCells + 0.05*Longevity + 0.06*Feet&Legs +
  + 0.0225*FootAngle(#) + 0.01*RearLegRearView(#) 
  + 0.0175* Locomotion(#) + 0.0375*UdderDepth(#)  +
  + 0.025*ForeUdderAttachment(#)  + 0.0225*UdderSupport(#)  +
  + 0.0125*RearTeatPlacement(#)  + 0.01625*RearUdderHeight(#)  +         
  + 0.01625*TeatLength(#)
TMI is standardized to mean 100 and st. dev. 12. Traits marked as (#) are only for purpose of TMI computation reaching highest value in optimum for each trait (since 08/2019).	
Anticipated changes in the near future		
Key reference on methodology applied		
Key organisation: name, address, phone, fax, e-mail, web site	Czech Moravian Breeders’ Corporation
252 09 Hradistko, Benesovska123
Ph. ++420 257 896 444
Fax. ++420 257 740 491
e-mail: cmsch@cmsch.cz
website: www.cmsch.cz
www.plemdat.cz	
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): Czech Republic		
Main trait group: Female fertility		
Breed (repeat as necessary): Holstein		

Trait	Definition	ITBa	h2b	genetic
varianceb	official proof
standardisation formulac	
						
Maiden heifer’s ability to conceive :	Conception Rate (CR)
1 barren / 100 pregnant	  X	0.039	95.45	See below the table	
Lactating cow’s ability to conceive : 	Conception Rate (CR)
1 barren / 100 pregnant	  X	0.044	108.54	See below the table	

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.

a = average of bulls born in 1995, b = standard deviation of bulls born in 1995, c = 12, d = 100

note 1:	
estimated genetic variance = 95.45 (heifers), 108.54 (cows)
converted genetic variance used in trend validation testing method 3:
21.468 (for heifers)
21.276 (for cows)
- formula used for conversion