One hundred sixteen pigs were used to determine effects of the interrelationship
among genotype, sex, and dietary lysine on
subprimal cut distribution of pigs fed to 230
and 280 lb. In a 2 X 2 X 2 factorial arrangement, barrows and gilts, previously
characterized as having either high or medium
lean-gain potential, were fed one of two
dietary lysine regimens. One pig per pen
was slaughtered when the mean weight of pigs in a pen reached 230 lb and the remaining
two pigs were fed until the mean weight
reached 280 lb. When fed to either 230 or
280 lb, carcasses from high-lean genotype
pigs or gilts had higher percentages of combined closely trimmed boneless ham, loin,
and shoulder than medium-lean genotype or
barrow carcasses, respectively. Dietary
lysine level had minimal influences on
subprimal cut distribution. The highest
percentages of major lean subprimal cuts for
pigs fed either to 230 or 280 lb were in highlean genotype gilts.
