Estimation of genetic parameters for calving ease for Simmental cattle in Croatia
Conference Paper
Overview
Research
View All
Overview
abstract
The objective of this study was to estimate the genetic parameters for calving ease of Simmental eau le in
Croatia. Data consisted of 135,S92 calves. and pedigree included 639.999 animals. Calving ease was scored
from I to 5 (I = unassisted, 2 to 5 =various levels or assistance). Calving ease at first calving. and second or
later parities where treated as different traits. Variance components were estimated by REML as implemented
in VCE-5 package. Statistical model included age at calving. sex, region-year interaction as fixed effects and
owner and direct additive genetic effect as random effects. The estimated heritabilities were 0.1 05±0.005
for calving ease at first calving and 0.07S±0.005 for calving ease at second and later parities. These results
suggest that model tested can be used for call le evaluation for calving case of Simmental catle in Croatia.
