<P> Advocates for rodeo state that sick, injured, hungry, or severely abused animals cannot perform well in a given event . Rough stock must be healthy and well fed to give the cowboy a powerful and challenging ride sufficient to obtain a high score . The bucking strap has to be an incentive to an animal that already wants to buck off a rider, not a prod, or the animal will either flee the pain, not buck, quickly sour and refuse to work, regardless of any pain that might be inflicted . Steers and roping calves will not break from the chute fast enough for ropers to achieve a fast time if they are lame or weak, and they are not generally used for more than a single season . </P> <P> Health regulations mandate vaccinations and blood testing of animals crossing state lines, so rodeo stock receives routine care . An injured animal will not buck well and hence a cowboy cannot obtain a high score for his ride, so sick or injured animals are not run through the chutes, but instead are given appropriate veterinary care so they can be returned to their usual level of strength and power . PRCA regulations require veterinarians to be available at all rodeos to treat both bucking stock and other animals as needed . </P> <P> The PRCA emphasizes that they first promulgated rules for proper and humane treatment of livestock in 1947, a full 7 years before the founding of the Humane Society of the United States . Participants are fined for animal abuse, and a study of 21 PRCA rodeos found only 15 animals injured in 26,584 performances, a 0.06 percent rate . </P> <P> On the other hand, there are occasions of rule violations and animal mistreatment at sanctioned rodeos . However, the major national rodeos are also under the most intense scrutiny and are the most likely to rigorously follow the rules . Rodeos not subject to the rules of the PRCA or other organizations, and rodeos outside of the United States and Canada, where animal cruelty laws are weaker, are more likely to be the sites of abusive practices . However, animal rights groups are less likely to target these cases . </P>

The term trick or treat was first used in which canadian province