Example 5
Three conditions were prepared, a AGP-containing feed (PC) obtained by adding antibiotics (lasalocid 0.05% by mass and avilamycin 0.01% by mass) to a standard feed, a PRB-supplemented feed (nisin (Lc)) supplemented with 2% of nisin A culture solution obtained by culturing Lactococcus lactis NCIMB 8780 in the same manner as in Example 4-1, and a AGP-free feed (standard feed only) (NC), and were administered to newborn chicks. Note that, for one condition, ten Cobb Broiler male newborn chicks were used, and the experiment was repeated three times to evaluate the body weight gain effect and feed conversion ratio of chickens. For the drug-free group (NC), a standard feed (ME 3160 kcal and CP 22% by mass without antibiotics used) was used. For the PC and nisin addition group, 2% by mass of the antibiotics (lasalocid and avilamycin) or nisin Z-containing liquid was added to the standard feed (ME 3160 kcal and CP 22% by mass), respectively.
