Genetic evaluation of beef cattle in the Czech Republic

1. Genetic evaluation of beef cattle in the Czech Republic J. Přibyl1, J. Přibylová1, P. Šafus1, Z. Veselá1, L. Vostrý1, J. Kopecký2, K. Malát2, K. Šeba2 1Institute of Animal Science, 10400 Prague – Uhříněves, Czech Republic, www.vuzv.cz 2Czech Beef Breeders Association, Prague, Czech Republic, www.cschms.cz

2. Beef cattle population in % (N = 353,678)

3. 23,002 active population with performance recording 155,000 cows in a suckler system Commercial herds

4. Cows in the active population in % (1.5.2008)

5. Calves born in the active population in % (control year 2006/7 )

7. BREEDING: - Only purebred beef sires - Sire – state licence - Natural service majority - AI 12.8 %, for Charolais 21.9 % -815 bulls enter into breeding / year - 752 for natural service -85% from domestic production

8. The most important paths of breeding: - Selection of young bulls (young sires) for herds - Combination of parents for the future generation ofsires

9. DEVELOPMENT of the SYSTEM - Performance recording - Genetic evaluation (BV) - Handling of databases - Operative feedback to the supervisors and farmers

10. Evaluated characteristics Recorded traits Others - health - genetic defects - defects conformation - sexual dimorphism - locomotion - ………

12. Performance recording Field test Type Calving difficulty Scoring body measurements and capacity Performance – test stations ♂ Birth weight 120 days weight Scoring muscling and overall type 210 days weight Daily gain • days weight

13. Estimation of BV Updated 4 times / year

14. Animals in genetic evaluation

15. Field test Breeding values: Multiple-Breeds, Multiple-Traits Animal Model withMaternal effect (5 direct + 5 maternal traits)

16. yijklmnop = yri + hysij + sk+ aml + am+ mn+ pn + hdo+ hmp+eijklmnop yijklmnop - recorded performance (ce, birth, 120, 210, 365) yri - year hysij - group of jointly evaluated animals (herd-year-season) sk - sex of the animal aml - mother’s age at calving am - direct BV of the animal mn - maternal BV pn - maternal permanent environment hdo - direct heterosis of calves hmp - maternal heterosis of dams eijklmnop- residual (am andmn with joint relationship and genetic groups according to the breeds)

17. Correlations between BV of sires in consecutive years

19. Own growth of bulls atperformance-test stations Breeding value: Multiple-Breeds Single-Trait Animal Model

20. Daily gains of bulls from birth to the end of the test (Bohmanová, 2001)

21. yijklm = hysi + amj + chk + atl+ gm+ eijklm yijklm- recorded daily gain in test hysi- group of jointly evaluated animals (station-year-season) amj - mother’s age at calving chk - class of the herd from which the individualscame according to the average gain atl- regression on the age of introduction into thetest gm- BV of the animal withgenetic groups according to the breeds eijklm- error

22. Type traits of young animals HS- height at sacrum BL - body length LW - live weight CW - front chest width CD - chest depth PE - pelvis (length and width) SM - shoulder muscling BM - back muscling RM - rump muscling PT - production type

23. Breeding values: Multiple-Breeds, Multiple-Traits Animal Model (10 traits) Traits two groups: 1) Body measurements and body capacity ( HS, BL, LW, CW, CD and PE) 2) Muscling and overall type (SM, BM, RM and PT).

25. First group:yijklmn = hysi + sj + amk+ ael +gm + eijklmnSecond group:yijlmno = hysi + sj ael + bdgn + gm + eijlmno yijklmn (yijlmno)- scoring of the trait hysi- group of jointly evaluated animals (herd-year-season) sj- sex of the animal amk- mother’s age at calving ael- regression on age at evaluation bdgn- regression on daily gain from birth gm- BVof the animal with genetic groups according to the breeds eijklmn (eijmnol)- error

26. Slaughtered sonsaccording to BV of sires for muscling

27. Selection indexes for young bulls IM- terminal crossing IZ - foundation sires IS - common beef herd

28. The sources of information - BV: - Field test -10 BV for direct and maternal effects for easy calving and growth, - Performance-testing stations - BV for daily gain bulls - Type traits of young animals -10 BV

29. Highest importance in the breeding objective - Direct effects for daily gain until weaning and after weaning 90% to 96% of the total selection effect

30. The time trend of BVof Charolais bulls

31. Future development direct evaluation of carcass traits. female fertility

33. ORGANIZATIONOF BEEF www.CSCHMS.CZ

34. MINISTRY ČSCHMS Praha Czech Beef Breeders Association (CBBA) 1990

35. ČSCHMS Praha (CBBA) CHAIRMAN election BREEDERS (voluntarily)

37. CHAIRMAN EXECUTIVE MANAGER (employee) 7 PROFESSIONALS + SECRETARY (employees)

38. ČSCHMS Praha (CBBA) CHAIR PERSONS (elected) BREED CLUBS coordination of breeds

39. ČSCHMS Praha (CBBA) ČMSCH a.s. (CMBC) PLEMDAT central evidence of animals state responsibility BV calculation BREEDERS

40. ČSCHMS Praha (CBBA) PLEMDAT ČMSCH a.s. (CMBC) central evidence of animals state responsibility BV calculation RESEARCH BREEDERS

41. ČSCHMS Praha (CBBA) PLEMDAT ČMSCH a.s. (CMBC) central evidence of animals state responsibility BV calculation BREEDERS RESEARCH INSEMINATION COMPANY

42. ČSCHMS Praha (CBBA) ADMINISTRATION INSPECTORS HERD BOOK - PERFORMANCE RECORDING - EVALUATION OF ANIMALS - PROMOTION OF BEEF CATTLE - SUBSIDIES …….

43. INFORMATION FLOW ČSCHMS Praha (CBBA) BREEDERS - CONTACT WITH INSPECTORS - PRINTED REPORTS - PUBLICATIONS

44. ANNUAL • REPORTS

45. ASSOCIATION • MAGAZINE • 4 x / year

46. WEBSITE– updated daily www.CSCHMS.CZ

47. - Internet Tool for Breeders - Breeding Programmes - Interactive Database of Animals - On – Line Performance Recording - Breeding Bull Search Database - BV - News – vet. – economic – husbandry …………….

48. Thank for your attention See you soon in the Czech Republic