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Quantitative Genetics Researches on Milk Protein Systems of Romanian Grey Steppe Breed
The paper makes part from a complex research project on Romanian Grey Steppe, a unique breed in terms of biological and cultural-historical importance, on the verge of extinction and which has been included in a preservation programme of genetic resources from Romania. The study of genetic polymorphism of protean fractions, especially kappa-casein, and the genotype relations of these lactoproteins with some quantitative and qualitative features of milk yield represents a current theme and a novelty for this breed. In the estimation of the genetic parameters we used R.E.M.L. (Restricted Maximum Likelihood) method. The main lactoprotein from milk, kappa - casein (K-cz), characterized in the specialized literature as a feature having a high degree of hereditary transmission, behaves as such in the nucleus under study, a value also confirmed by the heritability coefficient (h2 = 0.57 %). We must mention the medium values for milk and fat quantity (h2=0.26, 0.29 %) and the fat and protein percentage from milk having a high hereditary influence h2 = 0.71 - 0.63 %. Correlations between kappa-casein and the milk quantity are negative and strong. Between kappa-casein and other qualitative features of milk (fat content 0.58-0.67 % and protein content 0.77- 0.87%), there are positive and very strong correlations. At the same time, between kappa-casein and β casein (β-cz), β lactoglobulin (β- lg) respectively, correlations are positive having high values (0.37 – 0.45 %), indicating the same causes and determining factors for the two groups of features.
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[1] R. Bronnimann, E. Fluckiger, E. Rothenbuhler : Production laitier, Ed. IRL Lausanne, 1992, pp. 23-27.
[2] A., V. Balteanu, A. Vlaic, F., D. Pop, A., R. Rusu s.a. Characteriyation at protein level of the new ╬▒S1-cazein allele IRV discovered in Romanian Grey Steppe cattle breed Moldavian variety. Bulletin of USAMV - BT Anim. Sci. 4, 2008, pp. 1-10.
[3] A., V. Balteanu, A. Vlaic, A., R. Rusu, ┼×t. Creangâ, s.a. Milk proteins polymorphism in Romanian cattle breeds, identified by isoelectric focusing technique (IEF). Bulletin of USAMV Iasi, Anim. Sci. 50, 2007, pp.173-181.
[4] N. Gengler , A. Tijani, and G.R. Wiggans and I. Mistztal: Estimation of (co)variance function coefficients for test day yeld with a Expectation Maximization Restricted Maximum Likelihood Algorithm. 2000,
[5] V. Maciuc, V. Ujicâ, I. Nistor : Ghid practic de ameliorare geneticâ a bovinelor pentru lapte, Editura Alfa, Ia┼ƒi, 2003, pp. 206-264.
[6] V. Maciuc, ┼×t. Creangâ, M. P├«ntea : Ameliorarea geneticâ a bovinelor ├«n regiunrea transfrontalierâ. Editura ÔÇ×Ion Ionescu de la Brad", Ia┼ƒi, 2008, pp. 166-175.
[7] P. M. VanRaden , G. R. Wiggans : Derivation, Calculation, and Use of National Animal Model Information . Journal of Dairy Science Vol. 74 No. 8 2737-2746, 1991.
[8] ┼×t. Creangâ ┼×t., V. Maciuc, M. P├«ntea, I. G├«lcâ, R. Danaila : - Romanian Grey Steppe cattle breed in the context of genetic resources preservation in Romania. 3-rd International Symposium, 18-20 September, University of Technology and Life Sciences in Bydgoszcz, Poland. Book of abstract. Journal Central European of Agriculture, 2008, pp. 34-35.
[9] E. E. Wildman, G. M. Jones, P. E. Wagner, R. L. Boman : A Dairy Cow Body Condition Scoring System and Its Relationship to Selected Production Characteristics. Journal of Dairy Science Vol. 65 No. 3, 1982, pp. 495-501.
[10] J. W. West : Effects of Heat-Stress on Production in Dairy Cattle . J. Dairy Sci. 86:2131-2144, 2003.
[11] V. Maciuc, ┼×t. Creangâ, M. Schutz, S. Acatincâi, N. Bucâtaru : Results of genetic estimation for Frisian type cattle-s from North-Eastern Romania. Lucrâri ┼ƒtiinţifice seria zootehnie CD, vol 51 U.┼×.A.M.V. Ia┼ƒi, 2008.
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