The aim of this study was to determine the influence of feeding local and imported
soybean protein feeds to fattening pigs and examining it impact on the quality of pork. The trial
was created with 40 pigs divided in two groups (20 in each). Pigs in the control group received
imported soybean meal, in the trial group local farm grown in Latvia extruded soybean cake
mixed in the compound feed. The diets were designed to be nutritionally equivalent. For fattening
pigs each diet were available on an ad libitum basis to pens. During the study pigs were weighed
three times at 84, 140 and 190 days at age. Feed consumption, pig carcass traits and meat chemical
composition were determined. The final live weight in control group was 108.33 ± 2.904 kg and
in trial group was 111.88 ± 2.793 kg there were no significant difference (P > 0.05). Average
daily live weight gain in the all experimental period in control group was 0.779 ± 0.096 kg and
in trial group was 0.822 ± 0.103 kg, there were no significant difference (P > 0.05). Feed
consumption per kg of live weight in control group was 2.39 kg in trial group was 2.24 kg. Pig
carcass traits and meat chemical composition were similar for both groups without significant
differences (P > 0.05). Soybeans grown and processed in Latvia were equivalent to imported
soybeans and gives good rates of pig growth and quality of pork