Ann. Méd. Vét., 2004, 148 (1), pp 39 - 46 Study of the spirometric variables and the morphometrical measures of crossed belgian blue - holstein calves and dual purpose calvesJACQMOT O., MICHAUX C., BORCEUX J.P., BOUTET P., LEKEUX P.Abstract :
The bovine species is highly susceptible to respiratory dis-eases. A previous experiment has shown that Belgian Blue and White calves have lower spiro-metric variables than Holstein calves. The first aim of this study was to measure the spirometric variables (peak inspiratory flow, peak expiratory flow, maximal tidal volume, maximal ventilation in 15 seconds and ventilatory reserve) of 18 crossed Belgian Blue x Holstein calves and of 32 Dual purpose calves by the lobelin test and to compare them with 19 Holstein calves and 22 Belgian Blue and White calves. The second aim was to test the correlation between some mor-phometrical parameters (chest girth, thoracic width, thoracic length, thoracic height, thoracic section and costal angle) and those spirometric variables. The spirometric variables of the crossed calves and of the Dual purpose calves are situated between the ones of the Belgian Blue and White and of the Holstein. There is a positive sig-nificant correlation between these parameters and the spirometric variables. The higher cor-relation is obtained with the chest girth. All these parameters are easier and quicker measura-ble, and at lower cost than the spirometric variables. Get the PDF Contact person : ojacqmot@ulg.ac.be |