Here are some great resources from PA PBP expert, Dr Wilbers, courtesy of the good folks at PigINFOandCHAT@yahoogroups.com.
The Body Condition Score sheet shows a range of conditions. Ideal is considered to be between 2.5 and 3.
This pig is at an ideal weight/BCS. Believe it or not, he's 14 years old! Keeping pigs at a healthy weight reduces stress on all of their body systems, keeps them active, and prolongs their lives! Obesity is totally preventable!