Effects of feeding a fumonsin (FB[subscript 2]) naturally contaminated corn at various levels, with and without 2 adsorbents on the growth performance, blood, and liver chemistry of nursery pigs

Abstract

Three studies were conducted to determine the effects of diets containing various concentrations of fumonisin FB1 supplied by naturally contaminated corn with and without 2 adsorbents on nursery pig performance. Use of naturally contaminated corn instead of fumonisin culture material more approximates what would occur under industry conditions. Three 21 d studies were conducted using 30 to 32 two wk old post-weaned individually penned barrows with an average initial weight of 6.54 kg that were randomly allotted to dietary treatments in each experiment. (6 replications) containing different concentrations of FB1. Exp. 1 treatments were a Phase 2 nursery diet supplemented with 1) 0 ppm FB1 (control), 2) 20 ppm FB1, 3) 30 ppm FB1, 4) 40 ppm FB1, and 5) 50 ppm FB1. In conclusion, results indicate feeding a diet up to 50 ppm FB1 did not adversely affect growth performance of nursery pigs fed for 21 d however, a liver sphinganine to sphingosine significant increase did occur. Exp. 2 dietary treatments using 0.5 % carbonized-clay adsorbent (CC) were 1) 0 ppm FB1 corn, 2) 0 ppm FB1 corn + CC, 3) 20 ppm FB1 4) 20 ppm FB1 + CC, 5) 50 ppm FB1, and 6) 50 FB1 + CC. In conclusion, the results of this study reveal that a carbonized-clay adsorbent did not improve nursery pig performance and did not prevent or reduce changes in SA: SO ratios caused by FB1. Exp 3. had dietary treatments 1) control (0 ppm FB1 corn), 2) 0 ppm FB1 + 0.5 % activated carbon (AC), 3) 50 ppm FB1, and 4) 50 ppm FB1 + 0.5 % AC. In conclusion, the clay-based activated carbon at 0.5% did not reduce the adverse affects of 50 ppm FB1 on performance, serum chemistry, and liver SA: SO ratio of nursery pigs fed diets for 21 days.