RESEARCH STUDIES ON THE REPRODUCTION INDECES AT THE ROMANIAN BLACK SPOTTED COWS FROM THE PRIVATE FARMS SITUATED IN THE NORTH-EAST PART OF ROMANIA

T. Zus, R. Radu Rusu, Valerica Gîlcă, I. Gîlcă

Abstract
   Researches were done in a population of 250 cows Black Spotted breed grow into the private exploitation in the North East part of Romania (Suceava and Botoșani counties). There were analyzed the following characters: the age of the first calving (V.P.); the calving-interval (C.I.); the inter-lactation period (R.M.); service-period (S.P.). The mean values of breeding indices (VP, RM, CI and SP) highlight an inappropriate state of reproductive activity, with large differences from one holding to another and even within the same holding.