I. Gîlcă


RESEARCHES CONCERNING THE COMPARISON OF MILK YIELD BETWEEN CATTLE OF SCHWYZ BREED IMPORTED FROM SWITZERLAND AND BRUNA OF MARAMURES BREED

I. Gīlca, Valerica Macovei, M. Dolis, Luminita Dolis, D. Robu

Abstract
The main aim of this study was to compare the milk performance realized by cattle of Schwyz breed imported from Switzerland and the indigenous breed Bruna of Maramures. The analysis was performed into a farm at the first and second lactations. The imported dairy cattle (Schwyz breed) were compared with contemporaries indigenous breed (Bruna of Maramures) calved in the same period. 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 difference in milk production between Schwyz and Bruna of Maramures breeds, at first and second lactations, were not statistically significant. The Schwyz breed cattle achieved higher fat, protein and lactose percentage at the first lactation (4.25% and 3.94%, 3.42% and 3.20%, respectively 4.67% and 4.49%) and at the second lactation (4.29% and 4.02%, 3.42% and 3.21%, respectively 4.59% and 4.43%). These differences were statistically highly significant (P<0.01).

Key words: milk yield, cattle breed, Schwyz, Bruna of Maramures

CERCETARI COMPARATIVE PRIVITOARE LA PRODUCTIA DE LAPTE REALIZATA DE VACILE DIN RASA SCHWYZ IMPORTATE DIN ELVETIA SI VACILE DIN RASA BRUNA DE MARAMURES

I. Gīlca, Valerica Macovei, M. Dolis, Luminita Dolis, D. Robu

Rezumat
Scopul principal al acestei lucrari a constat īn compararea performantelor īn productia de lapte realizate de vacile din rasa Schwyz importate din Elvetia fata de vacile din rasa Bruna de Maramures. Studiul s-a realizat īntr-o ferma privata, analizāndu-se productiile īnregistrate la prima si a doua lactatie. Comparatia īntre cele doua rase s-a facut numai īntre indivizi nascuti īn aceiasi perioada, pentru a evita obtinerea unor date eronate. Vacile din ambele rase au beneficiat de conditii similare de īntretinere si furajare. Modelul liniar folosit pentru analiza productiei de lapte la prima lactatie a fost Yij= μ+ Hi+Cj+eij. Modelul liniar utilizat pentru analiza productiei de lapte la a doua lactatie a fost Yijk=μ+ Hi+Cj+ Jk+eijk. Diferentele īnregistarte la productia de lapte īntre cele doua rase, la prima si a doua lactatie, au fost nesemnificative din punct de vedere statistic. Laptele produs de vacile din rasa Schwyz, comparativ cu cel obtinut de la vacile din rasa Bruna de Maramures, a avut un continut mai mare īn grasime, proteine si lactoza atāt la prima fatare (4.25% - 3.94%, 3.42% - 3.20%, respectiv 4.67% - 4.49%), cāt si la a doua fatare (4.29% - 4.02%, 3.42% - 3.21%, respectiv 4.59% - 4.43%). Aceste diferente au fost, din punct de vedere statistic, foarte semnificative (P<0.01).

Cuvinte cheie: taurine, rase, Schwyz, Bruna de Maramures, productii de lapte