ArticleFrontiers in veterinary science2026
Dietary calcium and phosphorus levels in lactating Shenxian sows regulate growth performance and bone metabolism in suckling piglets.
Article in Frontiers in veterinary science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Optimal dietary calcium and phosphorus levels are critical for maximizing milk production in highly prolific sow breeds and subsequent bone development in suckling piglets. However, specific nutritional recommendations for the Shenxian sow are lacking. Aim: This study aimed to evaluate the effects of graded dietary Ca and P levels during lactation on growth performance, mineral metabolism, and the OPG/RANKL/RANK signaling pathway in nursing piglets. Methodology: Forty-five multiparous Shenxian sows were randomly assigned to one of five dietary treatments in a completely randomized design (n = 9 sows/treatment). Treatments consisted of a control diet (C: 0.63% Ca, 0.31% available P), a low Ca-P diet (L: 0.55% Ca, 0.27% available P), and three high Ca-P diets (H1: 0.71%/0.35%; H2: 0.79%/0.39%; H3: 0.87%/0.43%). Piglet blood samples were collected via anterior vena cava puncture on days 17 and 35 of lactation for serum biochemical and hormonal analysis. Results: High dietary Ca-P supplementation linearly improved indicators of mineral retention and bone regulation. Compared with the control group, apparent Ca digestibility increased in H1, H2, and H3 groups by 15.18%, 19.86%, and 16.08%, respectively ( Conclusion: Elevating dietary Ca and P levels to 0.79% and 0.39%, respectively, optimally enhances piglet growth performance by modulating the OPG/RANKL/RANK axis and reducing postnatal bone resorption. These findings establish evidence based nutritional thresholds for high-yielding Shenxian sows. Future research should investigate the long term effects of these mineral levels on sow longevity and subsequent reproductive cycles.
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