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Anim Biosci > Accepted Articles
https://doi.org/10.5713/ab.22.0104    [Accepted] Published online June 30, 2022.
Effects of selenium source and level on the physiological response, reproductive performance, serum Se level and milk composition in gestating sows
Xinghao Jin1  , Cheon Soo Kim1  , Min Jin Gim1  , Yoo Yong Kim1,* 
College of Agriculture and Life Sciences, Seoul National University, 08826 Korea
Correspondence:  Yoo Yong Kim,Email: yooykim@snu.ac.kr
Received: 14 March 2022   • Revised: 26 April 2022   • Accepted: 30 May 2022
Abstract
Objective
This study was conducted to evaluate the effects of selenium (Se) source and level on the physiological response, reproductive performance, serum Se level, and milk composition in gestating sows.
Methods
A total of 54 multiparous sows (Yorkshire × Landrace) with average body weight (BW), backfat thickness (BF), and parity were assigned to one of five treatments with 10 or 11 sows per treatment using a 2 × 2 factorial arrangement with one additional treatment in a completely randomized design (CRD). Inorganic or organic Se sources were added to the diet at 0.30 ppm and 0.50 ppm Se. A non-Se-fortified corn-soybean meal basal diet served as a negative control. Treatments were as follows: 1) Control : corn-soybean based diet, 2) IS30:control + inorganic Se 0.30 ppm, 3) IS50 : control + inorganic Se 0.50 ppm, 4) OS30: control + organic Se ppm, and 5) OS50: control + organic Se 0.50 ppm.
Results
At day 21of lactation, piglet weight and weight gain in the OS treatments were higher than those in the IS treatments (p<0.05). Meanwhile, adding 0.5 ppm Se also resulted in the same significant differences in piglet body weight and weight gain (p<0.05). Colostrum and milk Se concentrations increased (p<0.05) with Se level for both Se sources, but were greater when sows were fed organic Se (p<0.05). Except for 24 hours postpartum, the Se concentrations were higher when sows were fed organic Se (p<0.05). Sow serum Se content was greater as Se levels increased from 0.3 ppm to 0.5 ppm at day 110 of gestation, 24 hours postpartum and day 21 of lactation (p<0.05). The pig serum Se concentration increased as the dietary Se level increased (p<0.05) and was higher when the sow dietary Se source was organic (p<0.05). Organic Se 0.5 ppm also had the highest serum Se level at two measured points (p<0.05).

Conclusion

Consequently, supplementation with organic Se or 0.5 ppm Se in a gestating diet could improve piglet performance, the Se status of sows and piglets and milk composition, but organic Se at 0.5 ppm in particular is optimal.
Keywords: Selenium; Reproductive Performance; Litter Performance; Serum Selenium Level; Sows


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