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Mycotoxin binder used in contaminated diets on growing pig performance

The use of a commercial mycotoxin binder improves growth performance of pigs fed contaminated diets with deoxynivalenol.

Wednesday 5 December 2012 (6 years 1 months 17 days ago)

Deoxynivalenol (DON) in corn can inhibit growth and feed efficiency in pigs. A 7-d feeding trial with 80 pigs in 80 pens was conducted using 10 treatments to evaluate performance effects of a commercial mycotoxin binder (CMB) at 0, 0.45, 0.91 or 1.81 kg/ton (0CMB, LowCMB, MedCMB, or HiCMBB) in diets contaminated with DON at 0 (0.68 by assay), 1.25 (1.9 by assay), or 2.5 (2.5 by assay) ppm (0.7D, 1.9D, or 2.5D). A completely randomized design was used and ANOVA was performed in 2 sets of 6 treatments each (0CMB+0.7D and LowCMB+0.7D with 4 1.9D treatments or with 4 2.5D treatments) (P ≤ 0.05). Contaminated corn from the US midwest was blended with fresh corn and soybean/trace mineral/vitamin concentrate (ratio of 55.6% corn to 44.4% concentrate) to achieve desired DON levels. Litter mates of 40 barrows and 40 gilts (~10 wk old) of a commercial breed were used.

Regarding DON effects, the 1.9D level lowered average daily gain (ADG) (0.64 vs. 0.86 kg; P > 0.05) whereas the 2.5D level significantly reduced (0.20 vs. 0.86 kg; P ≤ 0.05) ADG compared with 0.7D level. Similarly, the 1.9D and 2.5D levels significantly (P ≤ 0.05) increased feed/gain (F/G) ratios compared with 0.7D level (2.24, 3.13 vs. 7.04 kg/kg). Regarding binder effects, at 1.9D level MedCMB increased ADG (0.78 vs. 0.64 kg; P > 0.05) and significantly lowered F/G (2.34 vs. 3.13 kg/kg; P ≤ 0.05) compared with 0CMB. At 2.5D level, each binder level (LowCMB, MedCMB, and HiCMB) significantly (P ≤ 0.05) improved ADG and F/G compared with 0CMB. Pigs fed LowCMB+0.7D diets had significantly higher ADG and lower F/G than 0CMB+1.9D or LowB+1.9D (P ≤ 0.05), or 0CMB+2.5D or LowCMB+2.5D pigs (P ≤ 0.05).

In conclusion, pigs receiving 1.9 ppm and 2.5 ppm DON contaminated diets supplemented with the commercial mycotoxin binder (0.45, 0.91, or 1.81 kg/ton) had better ADG and F/G ratios than non-supplemented pigs. The 0.91 kg/ton level of CMB supplementation (MedCMB) was most effective at improving ADG and F/G when pigs were fed DON-contaminated diets (1.9D or 2.5D).

P Williams and MD Sims. 2011. Evaluation of a commercial mycotoxin binder on performance of growing pigs in a 7-day feeding trial using diets with or without deoxynivalenol (DON) contamination. Journal of Animal Science, 89 (E-Suppl. 2): page 132.

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