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Spray-dried animal plasma has been shown to improve both growth performance and feed intake in newly weaned pigs. A commercial spray-dried animal plasma (SDAP) was proposed to use which is a high-density, ready-to-use source plasma and high digestible energy. The hypothesis was that providing nutrients through the water may be and effective method in combating postvaccination feed intake reduction. The objective of the study was to evaluate the effects of SDAP and a porcine circovirus 2 (PCV2) and Mycoplasma hyopneumoniae (M. hyo) vaccine regimen on growth performance of nursery pigs. A total of 180 nursery pigs ( initially BW = 5.72 ± 0.10 kg, and 19 ± 2 d of age) were used in a 35-d study. Pigs were randomly allotted to 1 of 4 treatments arranged in a 2 x 2 factorial with main effects of SDAP (with or without) and PCV2/M. hyo vaccine regimen (vaccinates or non-vaccinates) with 5 pigs per pen and 9 pens per treatment. At weaning, pigs in the vaccinate group were given a full dose (2 mL) of the combination of the two vaccines. On d 21, pigs in the vaccinate group were administered a second full dose (2 mL) only against PCV2 per label instructions. SDAP was administered to the pigs via water medicators for the first 5 d after arrival to the nursery.
No vaccine x SDAP interactions occurred for ADG or F/G throughout the study. From d 0 to 5, non-vaccinated pigs had a tendency (P < 0.07) for increased ADG. From d 21 to 35, pigs previously administered SDAP had greater ADFI (P = 0.05) than those not provided SDAP; however, overall (d 0 to 35) SDAP had no effects on growth performance. From d 0 to 35, vaccinated pigs had decreased (P < 0.01) ADG and ADFI compared with non-vaccinated pigs.
In conclusion, administering SDAP during the first 5 d in the nursery increased feed intake later in the nursery stage (d 21 to 35), but the response was not great enough to influence overall growth performance. Pigs administered the PCV2 and M. hyo vaccine regimen had decreased ADG and ADFI.
AJ Myers, JR Bergstrom, MD Tokach, SS Dritz, RD Goodband, JM DeRouchey, JL Nelssen, BW Ratlif, DM McKilligan. 2011. Effects of liquitein on weanling pigs administered a porcine circovirus type 2 and mycoplasma hyopneumoniae vaccine strategy. Kansas State University Swine Day, pages 62-69.