tailieunhanh - báo cáo khoa học: "Types of red cell potassium in seven of cattle Spanish native breeds"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Types of red cell potassium in seven of cattle Spanish native breeds | Génét. Sél. Evol. 1988 20 2 255-258 Note Types of red cell potassium in seven Spanish native breeds of cattle Paquita GONZALEZ Maria Jesus TUNON and M. VALLEJO Biologia Facultad de Veterinaria Universidad de León Campus de la Vegazana 24007 Leon Spain Departamento de Genética Facultad de Veterinaria Ciudad Universitaria 28040 Madrid Spain Summary The distribution of red-cell potassium was studied in seven Spanish native breeds of cattle. Two classes of cattle were identified one with potassium concentrations higher than 46 m-equiv 1 HK and one with lower concentrations LK . Mean values for LK animals varied from to 29 m-equiv 1. For HK animals the means ranged from to m-equiv 1. Key word red cell potassium cattle Spanish breeds. Résumé Types de potassium érythrocytaire de sept races bovines autochtones espagnoles L étude de la distribution du potassium érythrocytaire dans sept races bovines autochtones espagnoles a mis en évidence deux populations 1 une OÙ les animaux ont des concentrations de potassium érythrocỵtaire supérieurẹs à 46 m-équiv 1 HK 1 autre OÙ les concentrations sent inferieures à ce seuil LK Les valeurs moyennes du potassium érythrọcytaire chez les animaux LK valient entre 22 6 et 29 m-équiv 1 et chez les animaux HK entre 50 8 et 66 1 m-équiv 1. Mots clés potassium érythrocytaire bovins races espagnoles. I. Introduction Several authors Evans Phillipson 1957 Howes et al. 1961 Evans 1963 have contributed data on red-cell potassium concentrations in cattle but Ellory Tucker 1970 were the first researchers to point out the existence of two types of populations in this regard in Jersey cattle. They suggested the inheritance of the potassium type in cattle was simple as in sheep Evans King 1955 the LK gene being dominant over the HK one. Later Rasmusen et al. 1974 indicated that a major difference in potassium levels of red cells in cattle may be controlled by two codomi- 256 Paquita GONZALEZ MARIA JESUS TUNON M. VALLEJO nant alleles. .

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