V. Ujică


INTRAPOPULATIONAL STRUCTURE OF THE B.N.R. CATTLE REARED IN THE PRIVATE FARMS FROM THE NORTH-EASTERN AREA OF ROMANIA

V. Ujică, Rodica Dănăilă, V. Maciuc, I. Nistor, Şt. Creangă

Abstract
The research has been conducted in terms of household and semiintensive operating Black and White Romanian cows from Moldova region. The primary data came from a database of OARZ: Iasi, Bacau, Botosani, Suceava, Vaslui and Vrancea, obtained by control of production, supplemented by direct observations of some personal holdings taken in research.
In the Black and White Romanian cow intrapopulation structure from the specific area 56 genetics groups with more then 10 daughters were indentified. From 56 males used for reproduction, the bulls with the most numerous daughters were: code. 51,111 with 210 daughters, code 51,114 with 112 daughters, 51,131 with 110 daughters, 51454 with 101 daughters and 51112 with 95 daughters.
The medium milk production on these genetic structures reveal us some very valuable genetic families with 6000 kg milk production and over in the first lactation. Similarly, 8 families (14.28%) achieved in the first lactation 6000 kg milk and 26 families (46.42%) over 5000 kg milk. All these genetic structures and those presented above show the genetic value of Black and White Romanian cows from Moldova region.

Key words: cows, Black and White Romanian, intrapopulation structure, genetics groups

STRUCTURA INTRAPOPULATIONALA LA TAURINELE DE RASA B.N.R. EXPLOATATE ĪN FERMELE PRIVATE DIN ZONA DE N-E A ROMĀNIEI

V. Ujică, Rodica Dănăilă, V. Maciuc, I. Nistor, Şt. Creangă

Rezumat
Cercetarile s-au efectuat īn conditiile sistemului gospodaresc si semiintensiv de exploatare a vacilor de lapte de rasa B.N.R. crescute īn zona Moldovei. Datele primare au provenit din banca de date a OARZ: Iasi, Bacau, Botosani, Suceava, Vaslui si Vrancea, obtinute prin controlul oficial al productiei, completate cu observatii personale directe din unele exploatatiile luate īn cercetare.
Īn structura intrapopulationala a rasei B.N.R., din arealul studiat au fost identificate 56 grupe genetice cu peste 10 fiice. Din cei 56 de reproducatori masculi, taurii cu cele mai multe fiice au fost: cod. 51111 cu 210 fiice, cod. 51114 cu 112 fiice, 51131 cu 110 fiice, 51454 cu 101 fiice si cod 51112 cu 95 fiice. Productia medie de lapte pe aceste structuri genetice a evidentiat existenta unor familiii genetice foarte valoroase, cu performante de 6000 Kg lapte si peste, la prima lactatie. De asemenea, 8 familii (14,28%) au realizat la prima lactatie peste 6000 Kg lapte, iar 26 familii (46,42%) peste 5000 Kg lapte. Toate aceste structuri genetice si altele prezentate evidentiaza valoarea genetica a rasei B.N.R. din zona Moldovei.

Cuvinte cheie: rasa, BNR, structura intrapopulationala, grupe genetice