CONTRIBUTIONS TO THE KNOWLEDGE OF THE MAIN PRODUCTIVE INDICES IN PRIMIPAROUS ROUMANIAN SPOTTED BREED
G. Onaciu, E.C. Jurco
In this study we will present some comparative elements regarding cow's milk production in first lactation breeding and exploited in some private farms from the counties of Alba and Cluj. The researches for main milk production trait were orientated to analyse the content and quantity of fat and protein, corresponding to normal and total lactation. The entire research herd, 340 heifer cow's in first lactation from four farms was analysed and interpreted, thus : 220 head of cow farm, SC Agrotrust, 30 head from cow farm, S.C. Agrolact, 25 head from cow farm, S.C. Unichim and 65 heads from cow farm S.C. Crisan. In presenting and interpreting the results of research with regarding to milk production traits, was used the data obtained from official control of milk production (OCP). Thus, average milk production is too variable but depending on the farm between 3342 and 5001 kg milk for normal lactation. Best performances were achieved in SC CRISAN cow farm with a herd of 65 head cow milk, where milk production achieved in normal lactation was 5001.36 kg, 3.97% fat and 3.21% protein, corresponding to an average lactation length of 300 days. Age of first calving was 1004.93 days (33 months and 2 days) with a pronounced variability of this precocity cattle trait (V = 16.06%). In conclusion, after finish the research study we can to say, milk production results were quite good, comparison with Romanian Yellow Spotted standard bred performances.