Tuna, Y. T.Gurcan, E. K.Savas, T.2025-01-272025-01-2720071302-70502146-5894https://hdl.handle.net/20.500.12428/29313The present research was carried out to determine some fertility traits in Holstein cows raised at Sarimsakli State Farm. Reproductive performance records within the period from 1983 to 2003 of 764 Holstein cows raised at the farm were constituted the research material. Effect of years on First Breeding Age (FBA), First Calving Age (FCA) and Calving Interval(CI) were significant(P<0,01). Effect of Season on CI was significant (P<0,05), however on FBA and FCA were not significant(P>0,05). Effects of Lactation Length (LL) and FCA on CI was not significant(P>0.05). Effect of FBA on FCA was significant(P<0,01). Overall means for FBA, FCA and CI were found as; 18,98 +/- 2,73 month, 28,15 +/- 2,50 month and 407,07 +/- 78,59 day, respectively.trinfo:eu-repo/semantics/closedAccessHolsteinFertilityFirst Breeding AgeFirst Calving AgeCalving IntervalArticle43347357N/AWOS:000453144500012