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. 2018 Mar 10;2(1):62–73. doi: 10.1093/tas/txx004

Table 4.

Effects of added dietary Cu, Zn, EO, and CTC on nursery pig growth performance (exp. 2)a,b

Added Cuc: + + + +
Added Znd: + + + +
EOe: + + + +
CTC, ppm: 0 55 441 SEM
BW, kg
 d 5 6.57 6.56 6.56 6.53 6.61 6.69 6.56 6.62 6.53 6.55 0.084
 d 33 18.94 19.61 19.82 19.08 20.47 19.91 19.85 19.96 18.88 19.64 0.361
 d 47 29.02 29.32 29.68 28.83 30.56 29.50 29.47 29.89 28.90 29.28 0.503
d 5 to 33
 ADG, kg 0.44 0.46 0.47 0.42 0.49 0.47 0.47 0.48 0.43 0.46 0.012
 ADFI, kg 0.56 0.58 0.61 0.55 0.61 0.62 0.61 0.62 0.55 0.59 0.018
 G:F 0.77 0.79 0.77 0.76 0.81 0.76 0.78 0.76 0.79 0.78 0.012
 ME caloric efficiencyf 4,262 4,163 4,253 4,338 4,049 4,304 4,196 4,293 4,165 4,193 65.2
 NE caloric efficiencyf 3,145 3,071 3,137 3,200 2,986 3,175 3,095 3,166 3,073 3,092 48.1
d 33 to 47
 ADG, kg 0.72 0.69 0.70 0.70 0.72 0.68 0.69 0.71 0.72 0.69 0.016
 ADFI, kg 1.17 1.13 1.15 1.13 1.16 1.12 1.13 1.14 1.12 1.12 0.028
 G:F 0.62 0.62 0.61 0.62 0.62 0.61 0.61 0.62 0.64 0.61 0.113
d 5 to 47
 ADG, kg 0.53 0.54 0.55 0.51 0.57 0.54 0.55 0.55 0.53 0.54 0.011
 ADFI, kg 0.76 0.76 0.79 0.73 0.79 0.79 0.78 0.79 0.74 0.77 0.019
 G:F 0.70 0.71 0.69 0.69 0.72 0.69 0.70 0.70 0.72 0.70 0.009
 ME caloric efficiencyf 4,726 4,652 4,721 4,754 4,553 4,752 4,704 4,702 4,590 4,666 61.5
 NE caloric efficiencyf 3,483 3,429 3,479 3,504 3,355 3,502 3,467 3,465 3,383 3,439 45.3

aA total of 350 nursery pigs (PIC 1050, initially 6.05 kg BW) were used in a 47-d study with 5 pigs per pen and 7 replicate pens per treatment except for 4 treatments (EO, Cu + Zn, Cu + EO, Cu + Zn + EO), which had 6 replicate pens each.

bExperimental treatment diets were fed from d 5 to d 33. All diets contained 16.5 ppm Cu and 110 ppm of Zn from the trace mineral premix.

cCu from CuSO4 was added to treatment diets at either 0 or 125 ppm.

dPharmacological Zn diet treatments had an addition of 3,000 ppm Zn from added ZnO from d 5 to 12 and an addition of 2,000 ppm Zn from added ZnO from d 12 to 33.

eRegano EX (Ralco Animal Nutrition, Marshall, MN) was added to treatment diets at either 0 or 0.1%.

fCaloric efficiency is expressed as kcal per kg of live weight gain.