[Circulation load test and quality of meat in fattening pigs of known genetic origin].

102 fattened pigs with known genetic origin were tested on a conveyor-belt 1--4 days before slaughtering. 64 animals run in the first passage in each case 154 m in a 4 minutes (0.64 m/s), compared to it the 38 animals of the second passage run in each case 770 m in 20 minutes. Measurements of heart frequency and breathing and body temperature were taken before and at intervals until 30 minutes after movement. After slaughtering the values of pH, colour and drip loss of the M. longissimus dorsi were measured. It turned out a difference in the meat quality with a high part of PSE-meat in the first passage (36%), caused by season. The criterion "recovery time of heart action after load" was able to value the stress susceptibility in dependence on meat quality p.m. Animals with a longer recovery time exhibited a lower pH45 value, a lighter colour and a higher drip loss of meat. But only after a certain stress intensity (2. passage) the assertion was given.