RESEARCHES REGARDING THE PERFORMANCE OF MILK PRODUCTION REGISTRED IN DAIRY BREEDS PINZGAU AND TRANSILVANIA'S PINZGAU, EXPLOITED IN THE NORTH-EAST OF ROMANIA
I. Gîlcă, Valerica Gîlcă
The main aim of this study was to compare the milk performance realized by cattle of Pinzgau breed (PZ) imported from Austria and the indigenous breed Pinzgau of Transylvania (PZT). The analysis was performed in two herds at the first and second lactations. Both breeds were kept in the same conditions and with the same feeding. The first lactation records were analyzed according to the following linear model: Yij = µ + Hi + Cj + eij. The second lactation records were analyzed according to the following linear model: Yijk = µ + Hi + Cj + Jk + eijk. The analyses of covariances were processed and calculated the production of fat-protein corrected milk (FPCM) and energy content in milk (ECM) according to the following formulae: FPCM= 0.22M + 7.5F + 15P, respectively ECM = 37.68F + 16.75P + 16.54L. The difference in milk production between Pinzgau and Pinzgau of Transilvania breeds, at first and second lactations, were not statistically significant. The Pinzgau breed cattle achieved higher fat, protein and lactose percentage at the first lactation and second lactations. These differences were statistically highly significant (P<0.01).
Key words: North-East Region, milk yield, cattle, Pinzgau breed