Animal activity in pigs can be a direct indicator of animal welfare. Passive infrared detectors (PID) provide one method of measuring animal activity on the pen level as a cost-effective and easy-to-use sensor technique. The study aimed to test PIDs on different commercial farms with fattening pigs. https://www.animationbengal.com/?w=super-price-johnny-cash-at-folsom-prison-fashion-great-buy