The Effect of Increased Standardized Ileal Digestible Lysine through Increased Soybean Meal During Late Gestation on Lactating Sow Performance

Authors

Abigail K. Jenkins, Kansas State UniversityFollow
Jason C. Woodworth, Kansas State UniversityFollow
Jordan T. Gebhardt, Kansas State UniversityFollow
Robert D. Goodband, Kansas State UniversityFollow
Mike D. Tokach, Kansas State UniversityFollow
Joel M. DeRouchey, Kansas State UniversityFollow

Keywords

gestating sow, lactating sow, lysine

Abstract

A total of 87 sows (Line 241, DNA) and their offspring were used to evaluate the effect of increasing SID Lys through increasing soybean meal concentration in late-gestating sow diets on sow and litter lactation performance. Sows were blocked by parity and body weight (BW) on approximately d 90 of gestation and allotted to one of three treatments of increasing SID Lys (0.60, 0.80, or 1.00%) through increased soybean meal (14, 21, or 29% of the diet). Sows received approximately 4.5 lb/d of their treatment diet for an average SID Lys intake of 11.9, 15.8, or 19.9 g/d, respectively. Diets were fed from d 90 of gestation until farrowing. After farrowing, all sows were fed a common lactation diet containing 1.10% SID Lys. Litters were cross-fostered within sow treatment by 48 h after farrowing to equalize litter size. Parity was included in the statistical model as a fixed effect with sows being classified as either as primiparous (n = 35) or multiparous (n = 52). Weight gain from d 90 to d 110 of gestation increased as SID Lys increased (linear, P < 0.001). Change in urinary creatinine level from d 90 until d 110 of gestation tended to decrease as SID Lys level in the late gestation diet increased (linear, P = 0.063) indicating less muscle catabolism. Piglet ADG from d 2 to d 10 of lactation increased as SID Lys fed in gestation increased (linear, P = 0.017). There was a quadratic effect of late gestation sow diet on litter gain from d 2 until weaning (quadratic, P = 0.044). Litters from sows fed the 0.80% SID Lys diet tended to have numerically greater lactation litter gain. Sows fed the 0.80% SID Lys diet had numerically the highest (quadratic, P = 0.025) piglet mortality during the first two days of lactation. There was a parity × gestation diet interaction for d 2-to-weaning pre-weaning mortality (P = 0.049) where pre-weaning mortality increased as SID Lys increased in primiparous sows but decreased as SID Lys increased in multiparous sows. In conclusion, increasing SID Lys through increased SBM linearly increased late-gestation sow BW gain and piglet ADG during the first portion of lactation. However, litters from sows fed 0.80% SID Lys in late gestation had the highest litter ADG during late lactation and overall. These results suggest that increasing SID Lys intake to 0.80% during late gestation may be beneficial in improving lactation performance.

Recommended Citation

Jenkins, Abigail K.; Woodworth, Jason C.; Gebhardt, Jordan T.; Goodband, Robert D.; Tokach, Mike D.; and DeRouchey, Joel M. (2024) "The Effect of Increased Standardized Ileal Digestible Lysine through Increased Soybean Meal During Late Gestation on Lactating Sow Performance," Kansas Agricultural Experiment Station Research Reports: Vol. 10: Iss. 6. https://doi.org/10.4148/2378-5977.8620