Session 19 - C4

• Environmental and age effects on the semen semen quality of Austrian Simmental bulls (birgit.fuerst-waltl@boku.ac.at)
• Routine quality monitoring of embryo transplantation in dairy cattle based on NR56 (Roelofs.R@cr-delta.nl))
• Fertility in U.S. Holsteins by states (ignacy@uga.edu)
• Economic weights for beef traits in Slovakian Simmental population (peskovic@vuzv.sk)
• Estimates of genetic and phenotypic parameters for days to calving in Nelore cattle (forni@fcav.unesp.br).
• Seasonal climatic changes affect fertility of Holstein Friesian cows on large-scale dairy farms in Malawi (Mizeck.Chagunda@agrsci.dk)
• Ultrasound evaluation of the mammary gland tissue structure in preparturient heifers vs. performance of first calvers (jstrzet@izoo.krakow.pl)
• Breed Composition of Cattle in West Herzegovina (anita.zelenika@tel.net.ba)
• Genetic distances among Burlina, Holstein Friesian and Brown Swiss cattle breeds (chiara.targhetta@unipd.it)
•  Determination of the most suitable production testing interval and calculation method for estimating the lactation in Holstein …… (alicdeniz@hotmail.com)