키틴분해효소를 분비하는 형질전환 Bacillus subtilis의 사료내 첨가가 비육돈의 성장, 영양소 소화율, 혈액성상 및 육질특성에 미치는 영향

This study was conducted to investigate the effects of supplementation with transgenic Bacillus subtilis secreting chitinase on the growth performance, nutrient digestibility, blood characteristics and carcass traits in finishing pigs. A total of sixty-four pigs (50.82+0.82 kg, average initial body weight) were assessed over a period of 84 days. Dietary treatments included: 1) CON (basal diet without antibiotics), 2) AD (basal diet+0.1% Virginiamycin), 3) CD0.5 (basal diet+0.5% transgenic B. subtilis), 4) CD1.0 (basal diet+1.0% transgenic B. subtilis). Each dietary treatment had 4 replicates of 4 pigs per pen in a randomized complete block design. In terms of growth performance, the ADG (average daily gain) and gain/feed ratio were significantly increased with the CD1.0 diet compared to the AD diet during weeks 0-4 (p