N. Itoh et al., CORRELATION BETWEEN HEART-MUSCLE DAMAGE AND HIGH-NUTRIENT FEED IN BROILER-CHICKENS, Journal of veterinary medical science, 59(3), 1997, pp. 209-211
One-day-old broiler chickens were given commercial chicken starters du
ring first 4 weeks of growth. The chickens were then divided into two
groups: one group was fed commercial intensive growers (central feed),
and the other group was fed commercial broiler finishers (high-nutrie
nt feed). Body weights were calculated weekly. At eight weeks old, blo
od samples were collected and heart tissues were examined histopatholo
gically. Significant increases in body weight as well as pathological
findings in the heart muscle and an elevation of serum creation kinase
(CK) were observed in chickens fed with broiler finisher. Histopathol
ogical changes in heart fiber resembled that of sudden death syndrome,
and this heart damage was thought to be related to the increase of CK
levels.