https://www.selleckchem.com/pr....oducts/4-hydroxytamo
The objective of this study was to define a new composite trait for Holstein dairy cows and evaluate the possibility of joint improvement in milk and fertility traits. A data set consisting 35 882 fertility related records (days open (DO), calving interval (CI), and number of services per conception (NSC) and total milk yield in each lactation (TMY) was collected from 1998 to 2016 in Polish Holstein-Friesian breed herds. In this study TMY, DO, CI and lactation length (LL) of each cow was used to obtain compos
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