Reference : Comparison of the cardiac pumping capability and cardiac pumping reserve in double mu...
Scientific journals : Article
Life sciences : Anatomy (cytology, histology, embryology...) & physiology
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/8273
Comparison of the cardiac pumping capability and cardiac pumping reserve in double muscled and conventional calves
English
Amory, Hélène mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Médecine interne des équidés >]
Mc Entee, Kathleen mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Sémiologie et clinique médicale des petits animaux >]
Linden, Annick mailto [Université de Liège - ULg > Département de morphologie et pathologie > Pathologie spéciale et autopsies >]
Desmecht, Daniel mailto [Université de Liège - ULg > Département de morphologie et pathologie > Pathologie spéciale et autopsies >]
Beduin, Jean-Marie mailto [Université de Liège - ULg > Département clinique des animaux de production (DCP) > Obstétr. et path. de la reprod. des équidés]
D'Orio, Vincenzo mailto [Université de Liège - ULg > Département des sciences cliniques > Médecine d'urgence - bioch. et phys. hum. normales et path.]
Lekeux, Pierre mailto [Université de Liège - ULg > Département de sciences fonctionnelles > Physiologie - Doyen de la Faculté de Médecine vétérinaire >]
1993
Canadian Journal of Physiology & Pharmacology
NRC Research Press
71
12
946-951
Yes (verified by ORBi)
International
0008-4212
1205-7541
Ottawa
Canada
[en] cattle ; herediatry muscular hypertrophy ; oxygen consumption ; cardiovascular system ; cardiac power output
[en] Hereditary muscular hypertrophy is a character that has been selected in several animal species for industrial meat production. The selection of this character in cattle produces animals of exceptional commercial value but ones with a lower aerobic capacity than that of conventional cattle. The purpose of this work was to study the role of cardiac function as a potential limiting factor of aerobic capacity in double-muscled calves. Two groups of healthy calves were studied, one consisting of nine calves of conventional conformation and the other of nine double-muscled calves. Pulmonary arterial and capillary wedge, central venous, and systemic arterial pressures were measured by fluid-filled catheters and recorded together with the electrocardiogram. Cardiac output was measured by the thermodilution technique. From these measurements, the heart rate, the cardiac and the stroke indices, the pulmonary and the systemic vascular resistances, and the cardiac power output were calculated. The parameters were recorded under basal resting conditions and during incremental dobutamine challenge, which allowed determination of the resting cardiac power output, the cardiac pumping capability, and the cardiac reserve. Dobutamine challenge induced a significant rise in cardiac and stroke indices, heart rate, and cardiac power output, a significant decrease in pulmonary and systemic vascular resistances, and no change in systemic and pulmonary arterial pressures. The cardiac reserve obtained in the present study was low in comparison with those previously reported in humans, dogs, and horses. This may be related to the poor running capability of bovine species relative to that of the former species.(ABSTRACT TRUNCATED AT 250 WORDS)
Researchers ; Professionals
http://hdl.handle.net/2268/8273

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
AmoryH_CanVetRes_1993b.pdfPublisher postprint1.71 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.