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Articles by Gabi DUMITRESCU
Total Records ( 3 ) for Gabi DUMITRESCU
  Dorel DRONCA , Nicolae PACALA , Ioan BENCSIK , Ioan OPREA , Teofil OROIAN , Vasile CIGHI , Mihaela IVANCIA , Gabi DUMITRESCU , Ada CEAN and Liliana BOCA
  Integration of the Romania in the EU is imposing a special attention to hunting animal populations. The aim of the present paper was to study the quantitative evolution of the hunting population for the 13 species, in the period 2006-2010, in the hunting terrain 15 Alios, from Forest Domain-Timisoara, with a total surface of 8464 ha. The conclusion was that the numeric evolution of the species studied is normal, keeping a balance in between populations as a conclusion of natural and artificial selection. It was also noticed that there is a good correlation between the numbers of individuals from the species studied and the biogenic capacity of the hunting fond studied.
  Dorel DRONCA , Nicolae PACALA , Ioan BENCSIK , Marian BURA , Teofil OROIAN , Vasile CIGHI , Mihaela IVANCIA , Gabi DUMITRESCU , Daniela GOINA , Adela MARCU , Ada CEAN and Liliana BOCA
  Non additive genetic component that is the base of a quantitative character has no predictability, this is the reason for which the present paper is proposing to appreciate the special combinatory capacity for average nests weight and average body mass of the descendants at the age of 21 days, in a specific crossing scheme combining three rabbit breeds common in Timis County breeders New Zealand White, Large Chinchilla and Californian. The data obtained, statistic presented confirm a good special combinative capacity for this character, reason for which the crossing scheme is recommended for producing meat individuals destined for slaughterhouses. This scheme provides an exploitation of the high frequency of the heterozygote at maternal forms and at the final hybrids.
  Ada CEAN , Nicolae PACALA , Alexandra BOLEMAN , Gabi DUMITRESCU and Dorel DRONCA
  In vitro embryo production is a biotechnology with great potential for acceleration of the genetic progress for animal species, but in the same time it’s an important tool for research. Although there is considerable progress in the improving this technique, there is still a difference between the morphology of in vitro and in vivo produced embryos. Because of this, scoring of in vitro obtained embryos is difficult, since the majority of the existent systems for scoring embryo quality are based on information obtained from morphological parameters from in vivo produced embryos (Erenus et al., 1991, Hnida C., et al., 2004). The aim of this paper was to obtain embryos by in vitro fertilization (IVF) and morphometric characterize them. For in vitro fertilization we used the protocol described by Nagy A. (2003). The morphometric parameters taken in consideration were: the zona pelucida thickness, inner diameter, outer diameter, inner and outer perimeter of the embryo. The measurements were made with Quick Photo Micro 2.2 software. The fecundation rate was assessed at 24 hours after fecundation (54.7%). All embryos and unfertilized oocytes were measured. For embryos pellucid zone thickness was 9.09±0.47 μm, for oocytes 8.02±2.25 μm; for embryos the inner diameter was 99.98±3.80 μm, for oocytes 99.34±1.76 μm; for embryos outer diameter 116.18±2.70 μm and for oocytes it was 114.38±2.46 μm; the inner perimeter for embryos was 314.2±3.12 μm and for oocytes it was 314±1.93 μm; the outer perimeter for embryos was 369.3±5.97 μm and for oocytes 362.33±3.93 μm. The data suggests an increase of the embryos dimension compared with oocytes that were not fertilized. It can also be noticed that for embryos the thickness of the pellucid zone was higher (9.09 μm) compared with the unfertilized oocytes (8.02 μm).
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