[en] 1. The whole oxygen dissociation curve of oxyhemoglobin has been determined in double-muscled cattle of the Belgian White Blue breed and in Friesian cattle of different body weight. 2. In calves, P50 values are low and DPG level is high (4-20 mumol/g Hb). 3. P50 values of 25 +/- 1.4 mm Hg (mean +/- SD) and a level of DPG less than 1.5 mumol/g Hb have been found in animals weighing more than 80 kg. 4. Effects of temperature and pH on the oxygen dissociation curve have been measured at all levels of saturation. The temperature coefficient (dlog P50/dT) and the Bohr effect expressed as dlog P50/dpH were 0.017 and -0.40, respectively. 5. Hematocrit, hemoglobin concentrations and oxygen capacity of hemoglobin have been measured. 6. No difference between both breeds has been observed. 7. These data can be used to correct measured values of oxygen tension for temperature and pH and to measure oxygen content of blood in cattle.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Gustin, Pascal ; Université de Liège - ULiège > Centre de Physiopathologie des Bovins Bruxelles
Clerbaux, T.
Willems, Evelyne ; Université de Liège - ULiège > Département des sciences cliniques > Hématologie
Lekeux, Pierre ; Université de Liège - ULiège > Centre de Physiopathologie des Bovins Bruxelles
Lomba, Fernand
Frans, A.
Language :
English
Title :
Oxygen Transport Properties of Blood in Two Different Bovine Breeds
Publication date :
1988
Journal title :
Comparative Biochemistry and Physiology. A, Comparative Physiology
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