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A total of 1,143 pigs (PIC 337 × 1050, initially 55.3 lb) were used to determine the effects of tribasic copper chloride (TBCC; Intellibond C; Micronutrients Inc., Indianapolis, IN) or copper sulfate (CuSO4) on growth performance, carcass characteristics, pen cleanliness, and economics in a 111-d study. Pens of pigs were randomly allotted to 1 of 6 dietary treatments and balanced based on average pen weight in a completely randomized design with 25 to 28 pigs per pen and 8 pens per treatment. Treatment diets included a corn-soybean meal positive control, a high by-product diet with 30% dried distillers grains with solubles (DDGS) and 15% bakery meal (negative control), or the negative control diet with 75 or 150 ppm copper from CuSO4 or TBCC. All diets were formulated on a standardized ileal digestible (SID) amino acid basis and were 0.05% below the pig’s estimated lysine requirement throughout the trial. Pigs fed the corn-soybean meal positive control diet had improved (P < 0.01) F/G and tended to have increased ADFI (P < 0.08) compared with those fed the negative control, high by-product diet. Pigs fed increasing copper had improved (linear, P < 0.01) ADG and ADFI but tended to have slightly poorer (quadratic, P < 0.06) F/G. Although no interactions were observed between copper source and level, pigs fed increasing CuSO4 had increased (linear, P < 0.02) ADFI, whereas pigs fed increasing TBCC had increased ADG, ADFI, and final BW (linear, P < 0.01).

kansas agricultural experiment station research reports

Effects of copper source (Intellibond C or copper sulfate) on growth performance, carcass characteristics, pen cleanliness, and economics in finishing pigs