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Asian-Australas J Anim Sci > Volume 22(7); 2009 > Article
Swine Nutrition and Feed Technology
Asian-Australasian Journal of Animal Sciences 2009;22(7): 1038-1042.
DOI: https://doi.org/10.5713/ajas.2009.80240    Published online June 25, 2009.
Effects of Fermented Soy Protein on Growth Performance and Blood Protein Contents in Nursery Pigs
B. J. Min, J. H. Cho, Y. J. Chen, H. J. Kim, J. S. Yoo, C. Y. Lee, B. C. Park, J. H. Lee, I. H. Kim
Abstract
Fifty-four cross-bred ((LandraceYorkshire)Duroc) pigs (13.47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.
Keywords: Fermented Soy Protein; Growth Performance; Blood Protein Contents; Nursery Pigs


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