Evaluation of different soy protein concentrate sources on growth performance of weanling pigs

AbstractPorcine reproductive and respiratory syndrome virus (PRRSV) is the most prevalent disease of swine globally. Infection of weanling pigs with PRRSV leads to a complex immune response resulting in significant disease and decreased growth performance. Previous experimental evidence suggests that increasing concentrations of soybean meal in the diet of young pigs confer benefits in terms of growth performance and immune parameters. The objective of this experiment was to identify potential modes of action for this benefit, specifically the ability for soy-derived isoflavones (ISF) to confer immunological benefits to young pigs infected with PRRSV. Four dietary treatments differing in soy protein source (soy protein concentrate vs. enzyme-treated soybean meal) and ISF supplementation (none vs. 1,500 mg total ISF/kg) were fed; the control diet (CON) contained soy protein concentrate and no supplemental ISF. Weanling pigs (60 barrows, 21 d of age, 5.71 ± 0.44 kg) from a naturally Mycoplasma hyopneumoniae (Mh)–infected source herd were individually housed in disease containment chambers and provided ad libitum access to experimental diets for 7 d before receiving either a sham inoculation or a 9.28 × 103 50% tissue culture infective dose of PRRSV at 28 d of age (0 d postinoculation). A total of 5 experimental treatments included an uninfected group receiving the CON diet, plus four infected groups each receiving a different dietary treatment. Growth performance and rectal temperatures were recorded throughout the study, and blood was collected for quantification of serum PRRSV load, presence of anti-PRRSV antibodies, differential complete blood counts, cytokine concentrations, and T-cell immunophenotyping. Data were analyzed as a 2-way or 3-way ANOVA for all treatments including PRRSV-infected pigs, in addition to a single degree of freedom contrast to compare uninfected and infected pigs receiving the CON diet. PRRSV-infection reduced growth rate and efficiency compared with noninfected controls with minimal influences by ISF. Supplemental ISF reduced PRRSV-induced band neutrophilia and improved cytotoxic-to-helper T-cell ratios. These results suggest that ISF contribute to activation of adaptive immune system pathways and could benefit recovery from and clearance of PRRSV infections.

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A Very Low CP Level Reduced Diarrhoea and Productivity in Weaner Pigs, but No Differences between Post-Weaning Diets Including Soybean Meal or Soy Protein Concentrate Were Found

Animals ◽

10.3390/ani11030678 ◽

2021 ◽

Vol 11 (3) ◽

pp. 678

Author(s):

Julie C. Lynegaard ◽

Niels J. Kjeldsen ◽

Julie K. Bache ◽

Nicolai R. Weber ◽

Christian F. Hansen ◽

...

Keyword(s):

Growth Performance ◽

Soy Protein ◽

Soybean Meal ◽

Nutrient Utilization ◽

Positive Control ◽

Negative Control ◽

Soy Protein Concentrate ◽

Protein Concentrate ◽

Feed Conversion ◽

And Performance

Soy protein concentrate improves nutrient utilization and growth performance compared to soybean meal, and diets with a low crude protein (CP) level decreases diarrhoea. The objectives were to (1) test a low CP diet based on different soy products, and (2) to test a very-low CP diet (15.1%) with amino acids (AA) on diarrhoea and productivity. A total of 5,635 weaned pigs (~28 days), were assigned to five dietary treatments; PC (positive control): Standard CP levels (192, 189, 191 g/kg CP) with 2500 ppm ZnO; NC (negative control): Same as PC without ZnO; SP (Soy protein concentrate): Low CP levels (176, 174, 191 g/kg CP); SB (Soybean meal): Low CP levels (177, 176, 191 g/kg CP); and XLA (X-low CP + AA): Very low CP levels (154, 151, 191 g/kg CP) with AA. The PC and XLA diets reduced diarrhoea by 41 and 61%, respectively, compared to the NC group, while no difference between SB and SP were observed. The XLA diet reduced feed intake and daily gain compared with PC and NC, where SP, SB, and XLA had a poorer feed conversion compared with PC. Conclusively, the SP and SB low-protein diets did not reduce diarrhoea or growth performance, whereas the XLA diet decreased both diarrhoea and performance.

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Necessity of dietary taurine supplementation for preventing green liver symptom and improving growth performance in yearling red sea bream Pagrus major fed nonfishmeal diets based on soy protein concentrate

Fisheries Science ◽

10.1007/s12562-009-0185-y ◽

2009 ◽

Vol 76 (1) ◽

pp. 119-130 ◽

Cited By ~ 51

Author(s):

Shusaku Takagi ◽

Hisashi Murata ◽

Takanobu Goto ◽

Hideo Hatate ◽

Makoto Endo ◽

...

Keyword(s):

Growth Performance ◽

Red Sea ◽

Soy Protein ◽

Sea Bream ◽

Soy Protein Concentrate ◽

Protein Concentrate ◽

Red Sea Bream ◽

Pagrus Major ◽

Taurine Supplementation

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Effects of Dietary Soy Protein Concentrate on Growth Performance, Digestion, and Protein Metabolism of Juvenile Darkbarbel Catfish Pelteobagrus vachelli

Israeli Journal of Aquaculture - Bamidgeh ◽

10.46989/001c.20765 ◽

2014 ◽

Author(s):

Jipeng Xue ◽

Xiaojie Wang ◽

Wenbing Zhang ◽

Wei Xu ◽

Kangsen Mai ◽

...

Keyword(s):

Growth Performance ◽

Soy Protein ◽

Protein Metabolism ◽

Soy Protein Concentrate ◽

Protein Concentrate ◽

Pelteobagrus Vachelli

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PSXVI-4 Supplemental effects of increasing levels of soy protein concentrate replacing animal protein supplements on growth performance and intestinal health of nursery pigs

Journal of Animal Science ◽

10.1093/jas/skab235.748 ◽

2021 ◽

Vol 99 (Supplement_3) ◽

pp. 415-416

Author(s):

Zixiao Deng ◽

Marcos E Duarte ◽

Sung Woo Kim

Keyword(s):

Growth Performance ◽

Soy Protein ◽

Animal Protein ◽

Control Group ◽

Soy Protein Concentrate ◽

Protein Concentrate ◽

Intestinal Health ◽

Protein Supplements ◽

Nursery Pigs ◽

Supplemental Effects

Abstract This study evaluated supplemental effects of increasing levels of soy protein concentrate (SPC) replacing animal protein supplements on growth performance and intestinal health of nursery pigs. Thirty-two newly weaned pigs (6.4 ± 0.4 kg BW) were allotted to 4 treatments in a RCBD with initial BW and sex as blocks and fed for 35 d in 3 phases (P1/2/3 for 10/12/13 d, respectively) following NRC (2012). Dietary treatments were SPC-0 (diet with fish meal 4/2/1%, poultry meal 10/8/4%, and blood plasma 4/2/1% for P1/2/3, respectively); SPC-1, SPC-2, and SPC-3 (SPC-0 with SPC replacing 1/3, 2/3, and 3/3 of animal protein supplements). Titanium dioxide (0.4%) was added to the diets as indigestible marker from d 30. Growth performance was recorded for each phase. Pigs were euthanized on d 35 to collect jejunal tissue to measure intestinal health, and ileal digesta to measure apparent ileal digestibility (AID) of nutrients. Data were analyzed using the MIXED procedure of SAS. Overall, increasing levels of SPC replacing animal proteins reduced linearly (P < 0.05) the BW (21.4 to 17.3 kg), ADG (431 to 312 g/d), and ADFI (551 to 390 g/d) of pigs. The G:F decreased linearly (P < 0.05) on P1 (0.72 to 0.52). Increasing levels of SPC replacing animal proteins did not affect the AID of nutrients. Immunoglobulin A tended to increase (P = 0.099, 3.39 to 5.55 mg/mg of protein) when SPC supplemental levels were compared with the control group. Increasing levels of SPC replacing animal proteins did not affect the concentration of MDA, TNF-a, IL-8, protein carbonyl, and IgG and villus height, villus width, and crypt cells proliferation among treatments. Collectively, increasing level of SPC supplement did not negatively affect the intestinal health and digestibility of nutrients, whereas linearly reduced the growth performance.

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