Prezentace%20aplikace%20PowerPoint

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Genetic evaluation of beef cattle in the Czech
Republic
J. Pribyl1, J. Pribylová1, P. Šafus1, Z. Veselá1,
L. Vostrý1, J. Kopecký2, K. Malát2, K.
Šeba2 1Institute of Animal Science, 10400 Prague
Uhríneves, Czech Republic, www.vuzv.cz 2Czech
Beef Breeders Association, Prague, Czech
Republic, www.cschms.cz
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Beef cattle population in (N 353,678)
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23,002 active population with performance
recording
155,000 cows in a suckler system
Commercial herds
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Cows in the active population in (1.5.2008)
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Calves born in the active population in
(control year 2006/7 )
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• 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

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

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

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• Evaluated characteristics
• Recorded traits Others
• - health
• - genetic defects
• - defects conformation
• - sexual dimorphism
• - locomotion
• -

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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

1. days weight

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Estimation of BV

• Updated
• 4 times / year

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Animals in genetic evaluation
Trait Animals in evaluation including pedigree Animals with production records Yearly augmentation of database production records
Field test      
Weight at 120 days kg 331,219 106,512 8,011
Weight at 210 days kg 331,219 113,605 10,060
Weight at 365 days kg 331,219 44,585 3,498
Young ?
Daily gain in test g/day 26,034 7,729 1,132
Type of young animals
10 traits points 44,404 17,612 5,379
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Field test

• Breeding values
• Multiple-Breeds,
• Multiple-Traits
• Animal Model
• with Maternal effect
• (5 direct
• 5 maternal traits)

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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 - mothers 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 and mn with joint relationship and genetic
  groups according to the breeds)

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Correlations between BV of sires in consecutive
years
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Own growth of bulls at performance-test stations

• Breeding value
• Multiple-Breeds
• Single-Trait
• Animal Model

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

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• yijklm hysi amj chk atl gm
  eijklm
• yijklm - recorded daily gain in test
• hysi - group of jointly evaluated animals
• (station-year-season)
• amj - mothers age at calving
• chk - class of the herd from which the
  individuals came according to the average
  gain
• atl - regression on the age of
  introduction into the test
• gm - BV of the animal
• with genetic groups according to the
  breeds
• eijklm - error

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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
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• 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).

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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 - mothers 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

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Slaughtered sonsaccording to BV of sires for
muscling
Relative BV of sire - muscling SEUROP Points
81 90 2.42
91 100 3.25
101 105 3.30
106 110 3.36
111 115 3.69
116 120 3.80
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Selection indexes for young bulls

• IM - terminal crossing
• IZ - foundation sires
• IS - common beef herd

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• 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

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

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The time trend of BVof Charolais bulls
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Future development
direct evaluation of carcass traits.
female fertility
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• ORGANIZATION OF BEEF

www.CSCHMS.CZ
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MINISTRY
CSCHMS Praha Czech Beef Breeders
Association (CBBA) 1990
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CSCHMS Praha (CBBA)

CHAIRMAN
election
BREEDERS (voluntarily)
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CHAIRMAN
EXECUTIVE MANAGER (employee)
7 PROFESSIONALS SECRETARY
(employees)
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CSCHMS Praha (CBBA)
CHAIR PERSONS (elected)
BREED CLUBS
coordination of breeds
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CSCHMS Praha (CBBA)
CMSCH a.s. (CMBC)
PLEMDAT
central evidence of animals
state responsibility BV calculation
BREEDERS
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CSCHMS Praha (CBBA)
PLEMDAT
CMSCH a.s. (CMBC)
central evidence of animals
state responsibility BV calculation
RESEARCH
BREEDERS
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CSCHMS Praha (CBBA)
PLEMDAT
CMSCH a.s. (CMBC)
central evidence of animals
state responsibility BV calculation
RESEARCH
BREEDERS
INSEMINATION COMPANY
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CSCHMS Praha (CBBA)
ADMINISTRATION
INSPECTORS
HERD BOOK
- PERFORMANCE RECORDING - EVALUATION OF ANIMALS -
PROMOTION OF BEEF CATTLE - SUBSIDIES .
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INFORMATION FLOW
CSCHMS Praha (CBBA)
BREEDERS
- CONTACT WITH INSPECTORS - PRINTED REPORTS -
PUBLICATIONS
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• ANNUAL
• REPORTS

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• ASSOCIATION
• MAGAZINE
• 4 x / year

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WEBSITE updated daily
www.CSCHMS.CZ
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• - Internet Tool for Breeders
• - Breeding Programmes
• - Interactive Database of Animals
• - On Line Performance Recording
• - Breeding Bull Search Database
• - BV
• - News vet.
• economic
• husbandry .

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Thank for your attention
See you soon in the Czech Republic