Graph listing heart rate in beats per minute on the right. The scale starts at 50 at the bottom left and rises to 200 at the top left increasing by 25 each time. Time in chute is listed along the bottom axis. The time starts at 0 on the left and goes to 10 on the right increasing by 2 minutes each time. The graph shows a wavy line remaining steady at about 100 beats per minute, then a spike at 4 minutes with the word umbrella written under the spike area on the graph. The line gradually decreases to just above the 100 beats per minute level.

Heart Rate: A Potential Tool for the Improvement of Feed Efficiency and More