Effects of specialty proteins as alternatives to bovine or porcine spray-dried plasma in non-medicated diets fed to weaned pigs housed in an unsanitary environment

Crenshaw, J. D.; Campbell, J. M.; Polo, J.; Stein, H. H.

In Exp. 2, pigs provided a diet with 5.00% SDBP had higher BW, ADG and ADFI at d 7 and 14 postweaning compared to diets containing either 8.04% SPC; 0.4% APP; 10.66% EHSY; a combination of 0.4% APP, 6.36% EHSY, and 2.5% fish meal; or 0.44% IEGG. As observed in Exp. 1 with SDPP diets, pens in Exp. 2 provided the SDBP diet did not have any pens with a negative ADG at d 7, while all other specialty protein diets had 10 to 50% of the pens with negative ADG. However, across all non-SDBP diets, some pens fed the different specialty protein diets had a maximum ADG above the minimum ADG for SDBP, suggesting that local pen environment may have influenced growth response to diets, but that the other specialty proteins did not consistently enhance growth performance compared to the SDBP diet under the experimental conditions of unsanitary pens and non-use of medication.