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Research Regarding the Conservation of Genetic Fund Specific to Breed Sura de Stepa from Romania

2009; AcademicPres; Volume: 66; Linguagem: Inglês

2457-1423

V. Maciuc, Șteofil Creangă, G. Nacu,

Wheat and Barley Genetics and Pathology

Conservation and sustainable use of animal genetic resources was the subject of United Nation Convention from Rio de Janeiro since 1992 and International Treaty regarding phytogenetical resources for food and agriculture. In Romania, the conservation of genetic fund is scientifically accepted and applied somewhat in 196 0 but at the time it has a legislative support. Survey carries out on 33 cows were followed: milk yield indices per successive lactation; body development indices at adult animals; intrapop ulation genetic structure; genetic parameters. For estimating the genetic parameters has been used REML (Restricted Maximum Likelihood) method. From the productive point of view, milk yield range s between 1493.36 kg and 2499.14 kg with variability over 28%. The average value for th e size was 122.27 cm and body weight was 575.59 kg. Different studies shows average value for milk yield of 1624 kg for a mean of 216.54 days in 1947 at Anton Paul - Ilfov farm, 2172 kg in 1959 and 2 310 kg in 1960, 1976 kg in 1963 at G.A.S Laza Vaslui, 1244 kg in 1961 at G.A.C 8 Mai S aveni, Feteti. The heritability coefficient (h 2 ) has average value between 0.30-0.34 for the fat and milk quanti ty, and in case of fat percentage it may notice a strong genetic determinism. The studied population represents a valuable genetic fund, which must be preserved and ameliorated in the way of mixed production meat-milk and developed numerically.