Fig. 1

Body weight change between arrival and pre-competition in draft horses participating in the Heavy Horse Pull competition at the Calgary Stampede. a Body weight (in Kg) measured at arrival and pre-competition in all 50 horses participating in the event. b Body weight change in the 16 horses from the lightweight division between arrival and pre-competition. c Body weight change in the 16 horses from the middleweight division between arrival and pre-competition. d Body weight change in the 18 horses from the heavyweight division between arrival and pre-competition. * indicates significantly different from arrival