Archiva Zootechnica Vol. 1 - 1989

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Table of contents	3
Acrylamide agarose system of vertical horizontal bidimensional electrophoresis and histonic conformational changes involved in gene expression control Emilia Balauru, I.Cureu	9
Genetic structure of transferrin in Large White pigs and in Landrace x Large White hybrids I Gavrilet, I Curea, Victoria Neagu, Mariana Rebedea	17
Genetic structure of transferrin and albumin in Lipitan and Hutul horse breeds and in the hybrid Hutul x Romanian Light Draught horse I Gavrilet, I Curea, Victoria Neagu, Mariana Rebedea, I.Blaga	23
Types of haemoglobin in sheep related to environmental adaptation G.Vicovan, Dorina Rascu	33
A new biological achievement The synthetic swine line 345 Peris I.Beris, Maria Stoice, N Zeneci	45
Possibilities of new line development within swine breeds in top-quality pig units Felicia Popovici, G.Aureliu, I.Biris, Galieta Paraschivescu, Aurelia Cuc, A.Dutca, V.Gat, Gh. Balbaie Elena Andrei, I.Lup, M.Beres, P.Cretu, D.Axente, Gh.Gheoghitoiu, Gh.Carciumarescu, V.Sasu	51
Study on the variability of the main quantitative traits in some silkworm races Ana Brasla, Alexandra Matei, I.Stoian	63
Results concerning the use of metabolic profile tests in unfertile states in young sheep I.Pivoda, Stela Zamfirescu, Magdalena Lungu, Angela Cojocaru	71
Effect of enzymatic predigestion of feed on the productive performances of fattening pigs Gh.Puia Negulescu, Josefina Stavri, Gh.Burlacu	81
Study on the feed efficiency in Bombyx Mori L. Olga Cotenu, Valeria Rusu	89
Influence of the particle size of the sample on the degree of precision of the calibration coefficients obtained by near infrared reflectance spectroscopy D.Soneriu, C.M.Luca, V.Popa, Angela Petrescu	95
Technologies for improving the spruce stand storey pastures and their ecological implications Gh. Anghel, V.Cardasol	101
Improvement of pen resting area for different pig categories D. Simionescu, G. Aureliu, L. Alexandrescu, S. Radulescu, Floarea Sgorcea, S. Dinescu, C. Mircescu	107
Contributions to the technologies of controlling the species Deschampsia Caespitosa V. Cardasol, I. Razec, Constantina Chiper