| Autor: |
Rao ZX; Department of Animal Sciences and Industry, College of Agriculture, Kansas State University, Manhattan, KS 66506, USA., Tokach MD; Department of Animal Sciences and Industry, College of Agriculture, Kansas State University, Manhattan, KS 66506, USA., Woodworth JC; Department of Animal Sciences and Industry, College of Agriculture, Kansas State University, Manhattan, KS 66506, USA., DeRouchey JM; Department of Animal Sciences and Industry, College of Agriculture, Kansas State University, Manhattan, KS 66506, USA., Goodband RD; Department of Animal Sciences and Industry, College of Agriculture, Kansas State University, Manhattan, KS 66506, USA., Calderón HI; Department of Statistics, College of Arts and Sciences, Kansas State University, Manhattan, KS 66506, USA., Dritz SS; Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA. |
| Abstrakt: |
Fumonisin contamination in corn is an emerging issue in animal feed production. Fumonisin disrupts the metabolism of sphingolipids and reduces growth performance. This experiment was conducted to determine the effect of feeding fumonisin-contaminated corn on growth performance and sphinganine (SA) to sphingosine (SO) ratios of 9 to 28 kg pigs. A total of 350 pigs, were used with 5 pigs/pen and 14 pens/treatment. Dietary treatments contained fumonisin-contaminated corn (50 mg/kg of fumonisin B1 + B2) blended with low fumonisin corn (10 mg/kg of fumonisin B1 + B2) to provide dietary fumonisin concentrations of 7.2, 14.7, 21.9, 32.7, and 35.1 mg/kg. From day 0 to 28, increasing fumonisin concentration decreased (linear, p < 0.001) average daily gain, average daily feed intake (linear, p = 0.055), and gain:feed ratio (linear, p = 0.016). Although these response criteria tested linear, the greatest reduction in performance was in pigs fed with 32.7 and 35.1 mg/kg of fumonisin (B1 + B2). Increasing fumonisin concentration increased the serum SA:SO ratio (linear, p < 0.001) on day 14 and 28. In summary, for 9 to 28 kg nursery pigs, increasing fumonisin linearly decreased average daily gain and gain:feed ratio. However, despite the linear response, diets containing up to 21.9 mg/kg of fumonisin did not have as dramatic a decrease in growth performance as those fed more than 32.7 mg/kg. Further research is warranted to determine the effect of fumonisin concentrations between 21.9 and 32.7 mg/kg. |
