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. 1, the improved performance of pigs fed diets with SDPP compared to SPC during the initial 2 wk post-weaning are consistent with results of multiple experiments reviewed by others (Torrallardona, 2010; Pujols et al., 2016) . Only ADG of pigs fed the diet with 5.00% SDPP compared to 2.50% SDPP was increased at d 7 and thereafter no significant differences in any performance variables were noted for diets with 2.50 or 5.00% SDPP. The observation that none of the pens provided SDPP diets had negative ADG at d 7 postweaning, while 18 to 27% of pens provided non-SDPP diets had negative ADG results suggest that pigs fed SDPP diets were more resilient to the non-medication use and unsanitary pen conditions during the initial week post-weaning. Spray-dried porcine plasma contains a diverse mixture of proteins with biological activity including globulin, albumen, transferrin, glycopro-teins, apolipoproteins, enzyme inhibitors, and proteins associated with blood clotting mechanisms (Kar et al., 2016) . Improved growth of animals fed diets with SDPP has been attributed to actions of plasma globulins against luminal pathogens and toxins and reduced pro- Average daily gain at d 7 post-weaning for each pen (n = 10) by dietary treatment for Exp. 2. Experimental diets contained the following specialty proteins as % of the diet: SPC = 8.04% soy protein concentrate (Soycomil P, ADM Alliance Nutrition, Quincy, IL); APP = 0.40% activated porcine plasma (betaGRO, NutriQuest, Mason City, IA); EHSY = 10.66% enzymatically hydrolyzed soy and yeast protein (Hamlet 800 Booster, Hamlet Protein Inc., Findlay, OH); CB = combination of 0.40% APP, 6.36% EHSY, and 2.50% fish meal; IEGG = 0.44% hyper-immunized spray-dried egg (ProtiMax for Swine, Trouw Nutrition, Highland, IL); SDBP = 5.00% spray-dried bovine plasma (AP920, APC Inc., Ankeny, IA). 1 Values are least squares cumulative performance data means for 10 pens per dietary treatment (T) analyzed using a mixed model for repeated measures of treatment (T), day of experiment (D), and treatment × day (T × D) as fixed effects, block and replication as random effects, and replication within block as sub-type for repeated measures. Experimental diets contained the following specialty proteins as % of the diet: SPC = 8.04% soy protein concentrate (Soycomil P, ADM Alliance Nutrition, Quincy, IL); APP = 0.40% activated porcine plasma (betaGRO, NutriQuest, Mason City, IA); EHSY = 10.66% enzymatically hydrolyzed soy and yeast protein (Hamlet 800 Booster, Hamlet Protein Inc., Findlay, OH); CB = combination of 0.40% APP, 6.36% EHSY, and 2.50% fish meal; IEGG = 0.44% hyper-immunized spray-dried egg (ProtiMax for Swine, Trouw Nutrition, Highland, IL); SDBP = 5.00% spray-dried bovine plasma (AP920, APC Inc., Ankeny, IA). Experimental diets were non-medicated and fed during the entire 14 d experiment.