Status as of: 2019-09-01

DESCRIPTION OF NATIONAL GENETIC EVALUATION SYSTEMS

Country (or countries)	Italy	
Main trait group1	Production	
Breed(s)	Simmental	
Trait definition(s) and unit(s) of measurement2
Attach an appendix if needed	Milk yield kg
Fat yield kg
Protein yield kg 	
Method of measuring and collecting data	Milk recording	
Time period for data inclusion	Calving date 1984	
Age groups (e.g. parities) included	All lactations with at least 3 TD; cows required first lactation TD in data	
Other criteria (data edits) for inclusion of records	Min max age at caving; at least 3 TD within CG (Herd Test Date), Limits for phenotypic expression: 2<milk kg<80, 1<fat %<7, 1< protein %<6. 	
Criteria for extension of records (if applicable)	No	
Sire categories	No	
Environmental effects3, pre-adjustments 	None	
Method (model) of genetic evaluation3	BLUP-AM-ML-RP-TDM	
Environmental effects3 in the genetic evaluation model	Herd Test Day  (F); Season at calving within region and year of calving (F); Stage of lactation within class of age at calving, parity and period of calving (F); DIM fitted by a linear covariable within Stage of lactation within class of age at calving, parity and period of calving (F); Stage of Pregnancy (F); PE cow (R); ANIMAL (R).	
Adjustment for heterogeneous variance in evaluation model	No	
Use of genetic groups and relationships	Yes 	
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, as applicable, if you participate in the international genetic evaluations of Interbull	
System validation	Checks on sex, age of parents for pedigree. Check the Mendelian Sampling. Correlations between new proofs and the previous one. Application of Interbuls Methods.	
Expression of genetic evaluations
If standardised (e.g. RBV), give standardisation formula in the appendix	EBV305=(305*EBVTD)	
Definition of genetic reference base
Next base change	Cows born in between yyyy-7 and yyyy-5 where yyyy is currently year.
Every run	
Calculation of reliability		
Criteria for official publication of evaluations	20 daughters and 10 herds with at least 4 td records	
Number of evaluations / publications per year	3	
Use in total merit index4	IDA (Indice Duplice Attitudine = Double Purpose Index): 44% Milk composite index (37% Protein yield, 5% Protein percent 2% Fat yield), 24% Beef Index, 19.5% Conformation (14.5% Udder, 5% Feet&legs), 12.5% Fitness (7,5% Milkability, Cell Somatic Score 5%)	
Anticipated changes in the near future		
Key reference on methodology applied		
Key organization: name, address, phone, fax, e-mail, web site	ANAPRI (ASSOCIAZIONE NAZIONALE ALLEVATORI BOVINI DI RAZZA PEZZATA ROSSA ITALIANA) Via I. Nievo, 19 I-33100 UDINE-ITALY. Tel. ++39 0432 224111 Fax ++39 0432 224137, anapri@anapri.it, http:\\www.anapri.it	
1) Either: Production (e.g. milk, fat, protein), Conformation, Health (e.g. mastitis resistance, milk somatic cell, resistance to diseases other than mastitis), Longevity (e.g. direct longevity, combined 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).

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

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

Trait	h2a	Genetic
variancea	official proof
standardisation formulab	
Milk yield:
	21.6	378882 kg2	EBV kg	
Fat yield:
	13.0	513 kg2	EBV kg	
Protein yield:
	18.3	345 kg2	EBV kg	
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.