Bakir, GalipKaygisiz, AliCilek, Suleyman2020-06-252020-06-252009closedAccess1680-55931993-601Xhttps://hdl.handle.net/20.500.12587/4324KAYGISIZ, ALI/0000-0002-5302-2735The purpose of this study was to estimate the trends components of 305-days milk yield in Holstein Friesian Cattle Holstein cows raised at the Ceylanpinar state farm in Turkey between 1986 and 2007 years. The phenotypic, genetic and environmental trends for 305-days milk yield were found to be 106.91, 13.42 and 93.49 kg year(-1), respectively. Despite, there was a correct decision in selection environmental factors affected yield more. In this respect, continuing the improving environmental factors which is composed of maintenance, feeding, milking practices and barn is recommended.eninfo:eu-repo/semantics/closedAccessCattleHolsteinmilk yieldgenetic trendsTurkeyArticle812255325562-s2.0-77951630889N/AWOS:000271623400025Q4