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Effects of dietary lysophospholipid complex supplementation on lactation performance, and nutrient digestibility in lactating sows

Wang, Q. Q., S. F. Long, J. X. Hu, M. Li, L. Pan and X. S. Piao

This study was conducted to investigate the effects of dietary lysophospholipid complex (LPL; Lipidol; EasyBio, Inc., Korea) on lactation performance, production of immunoglobulins, and nutrients digestibility in lactating sows. Forty sows (Large White × Landrace, 222 ± 13 kg BW, and 2.5 ± 0.6 parity) were allotted to 5 dietary treatments with 8 sows per treatment based on back fat thickness, and body weight. From d 107 of gestation to d 21 of lactation, sows were fed corn-soybean meal-based diets containing 0, 250, 500, 750 and 1000 mg / kg LPL, respectively. As the concentration of LPL increased, body weight loss of sows during lactation was reduced (P <  0.05, linear), whereas ADG of nursing piglets was increased (P <  0.05, linear). Meanwhile, as the concentration of LPL increased, levels of IgA, IgM and IgG in colostrum and milk were increased (P <  0.05) linearly. The apparent total tract digestibility of dry matter, crude protein, ether extract, gross energy, neutral detergent fiber and acid detergent fiber in sows was also increased (P <  0.05, linear) as the concentration of LPL increased. The content of IgA in serum of sow was increased (P <  0.05) quadratically, and the contents of IgA and IgM in serum of piglets were also increased (P <  0.05) quadratically as the concentration of LPL increased. The content of serum glucose was raised (P <  0.05) linearly, whereas the contents of serum triglyceride and total cholesterol were decreased (P <  0.05) linearly in sows as the concentration of LPL increased.

In conclusion, increasing LPL supplementation improved performance, colostrum and milk immunoglobulins, serum parameters, nutrient digestibility and litter performance in lactating sows.