|Monson, D - TEXAS TECH UNIVERSITY|
|Mateo, Ronaldo - TEXAS TECH UNIVERSITY|
|Kim, Sungwoo - TEXAS TECH UNIVERSITY|
Submitted to: Joint Meeting of the ADSA, AMSA, ASAS and PSA
Publication Type: Abstract Only
Publication Acceptance Date: March 13, 2007
Publication Date: July 7, 2007
Citation: Monson, D.A., Carroll, J.A., Mateo, R., Kim, S. 2007. Effect of feeding fermented soybean meal on plasma concentration of cortisol in LPS-challenged nursery pigs [abstract]. Journal of Animal Science. 85(Suppl. 1):148. Abstract No. 87. Technical Abstract: The objective of the present study was to determine if feeding nursery pigs diets containing either plasma protein (PP) or fermented soybean meal (FSBM) would alter the overall stress response to a lipopolysaccharide (LPS) challenge as indicated by plasma concentrations of cortisol. Pigs (n=24) were weaned at d 21 of age and allotted to 3 dietary treatment groups: (1) CON (diet containing no PP or FSBM), (2) FS (diet with 10% FSBM), and (3) PP (diet with 7% PP). All the diets contained 33% corn, 3% fish meal, 25% dried whey, 0.5% salt, and 4% vitamin-mineral premix. Inclusion of PP and FSBM was done by replacing 11% of soybean meal. Crystalline amino acids were added to match amino acid contents among the diets. Vegetable oils and corn starch was added to match the ME contents among the treatment diets. Pigs were housed individually and fed the experimental diets for 15 d. Each treatment consisted of 8 replicates. Weight gain and feed intake of individual pigs were measured during the 15 d period. On d 14, all the pigs were non-surgically fitted with indwelling jugular vein catheters. On d 15, all pigs were administered a dose of LPS (25 ug/kg BW) via the jugular vein catheter. The ADG was 130.3, 139.0, and 158.5 g for CON, FSBM, and PP, respectively but did not differ (P>0.05) among the treatments. The ADFI of PP (235.9 g) was greater (P<0.05) than CON (182.9 g) and FSBM (198.0 g). Blood samples (3 mL) were collected over a 6-h period at 30-min intervals (from 1-h pre- to 5-h post-LPS challenge) to determine plasma concentrations of cortisol. Plasma concentrations of cortisol in the FS pigs tended to be lower (P<0.10) than those of CON pigs at 30 (58 and 77 ng/mL for FS and CON, respectively), 210 (139 and 180), 270 (100 and 155), and 300 (89 and 132) min after LPS challenge. Collectively, these data indicate that pigs fed a diet containing fermented soybean meal tended to handle the immune stress better than the other groups.