Effects of Fermented Soy Protein on Growth Performance and Blood Protein Contents in Nursery Pigs

  • Min, B.J. (Department of Animal Resource and Science, Dankook University) ;
  • Cho, J.H. (Department of Animal Resource and Science, Dankook University) ;
  • Chen, Y.J. (Department of Animal Resource and Science, Dankook University) ;
  • Kim, H.J. (Department of Animal Resource and Science, Dankook University) ;
  • Yoo, J.S. (Department of Animal Resource and Science, Dankook University) ;
  • Lee, C.Y. (Reigional Animal Industry Center, Jinju National University) ;
  • Park, B.C. (Gyeongnam Province Advanced Swine Research Institute) ;
  • Lee, J.H. (Korea National Arboretum) ;
  • Kim, I.H. (Department of Animal Resource and Science, Dankook University)
  • Received : 2008.05.02
  • Accepted : 2008.11.18
  • Published : 2009.07.01


Fifty-four cross-bred ((Landrace${\times}$Yorkshire)${\times}$Duroc) pigs (13.47${\pm}$0.03 kg average initial BW) were evaluated in a 42 d growth assay to determine the effects of the fermented soy product (FSP). The dietary treatments were: FSP 0 (corn-soybean basal diet), FSP 2.5 (FSP 0 amended with 2.5% FSP), and FSP 5 (FSP 0 amended with 5% FSP). The body weight at the end of the experiment increased linearly (p = 0.05) as the FSP levels in the diets increased. In addition, the ADG and G/F ratio also increased (linear effect, p = 0.06) as the levels of FSP increased. However, there was no effect of FSP on ADFI or DM digestibility (p>0.05). Furthermore, the N digestibility increased as the FSP levels increased (linear effect, p = 0.003), although the total protein concentration in the blood was not affected by FSP (p>0.05). Additionally, the albumin concentration was higher in pigs fed diets that contained 2.5% FSP than in pigs in the control group or the FSP 5 group (quadratic effect, p = 0.07). The creatinine concentrations were also evaluated at d 42 and found to be greater in pigs that received the FSP 2.5 diet (quadratic effect, p = 0.09). Moreover, the creatinine concentration increased linearly in response to FSP treatment (p = 0.09). Finally, although the BUN concentration on the final day of the experiment was greater in pigs that received the FSP 2.5 diet (quadratic effect, p = 0.10), there were no incremental differences in BUN concentrations among groups (p>0.05). Taken together, the results of this study indicate that feeding FSP to pigs during the late nursery phase improves growth performance and N digestibility.


Fermented Soy Protein;Growth Performance;Blood Protein Contents;Nursery Pigs


Supported by : Dankook University


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