| 杨润,肖昊,梁兴伟,等.妊娠后期补饲硫酸镁钾盐对母猪生产性能、抗氧化能力及免疫功能的影响[J].广东农业科学,2024,(4-6):- |
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妊娠后期补饲硫酸镁钾盐对母猪生产性能、抗氧化能力及免疫功能的影响 |
| Effects of Supplemental Potassium Magnesium Sulfate during late Pregnancy on Performance, Antioxidant Capacity and Immune Function in Sows |
| 投稿时间：2024-01-13 修订日期：2024-04-01 |
| DOI： |
| 中文关键词: 硫酸镁钾 妊娠母猪 生产性能 抗氧化活性 血浆生化 免疫功能 |
| 英文关键词: Potassium magnesium sulfate Pregnant sow Production performance Antioxidant activity Plasma biochemistry Immune function |
| 基金项目:十四五国家重点研发专项 (2021YFD1300401)；财政部和农业农村部国家现代农业产业技术体系；广州市科技计划项目 (202005000003) |
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| 中文摘要: |
| 【目的】本试验旨在研究妊娠后期补饲硫酸镁钾盐(Potassium Magnesium Sulfate, PMS) 对母猪生产性能、血浆生化指标、抗氧化活性和免疫性能的影响,以期系统研究富钾、镁的天然矿物盐PMS对母猪性能的影响。【方法】试验选取3~4胎次、健康状况良好且预产期相近的妊娠后期 (妊娠85 d) 史记长×大二元母猪60头,采用单因子试验设计随机分为4组 (每组15头,每头1个重复),分别饲喂0、5、10、15 g/头/天PMS。试验从妊娠85 d开始,母猪分娩后,停止补饲PMS,且泌乳期各组自由采食相同商业泌乳饲料,试验期至哺乳仔猪18日龄称重结束。【结果】1) 补饲PMS对母猪产仔数、健仔数、背膘厚、产程、体重、泌乳期采食量、仔猪初生个体重、断奶仔猪数、哺乳期仔猪死亡数等指标均无显著影响 (P > 0.05)；与对照组相比,补饲PMS后母猪妊娠后期粪便评分呈线性增长 (Plinear < 0.05) 且补饲10 g PMS显著提高 (PAnova < 0.05)；补饲PMS对仔猪初生窝重、断奶仔猪窝重、哺乳期仔猪窝均增重和哺乳期仔猪日增重呈线性增加 (Plinear < 0.05),除了初生窝重外均有二次效应 (PQuadratic < 0.05),组间显著影响 (PAnova < 0.05),10 g PMS组与对照组相比仔猪初生窝重、断奶仔猪窝重、哺乳期仔猪窝均增重和哺乳期仔猪日增重分别提高了16.27%、24.42%、35.14%和31.64%。2) 补饲PMS对母猪血浆中甘油三酯 (TG) 、胆固醇 (CHO) 、低密度脂蛋白 (LDL) 胰岛素 (INS) 含量呈线性增加趋势 (Plinear < 0.05) 且显著提高 (PAnova < 0.05),其中TG及LDL有二次效应 (PQuadratic < 0.05),其中10 gPMS组较对照组分别提高了20.00%、28.35%、25.00%和31.98%。3) 补饲PMS对母猪血浆中免疫球蛋白G (IgG)、免疫球蛋白A (IgA)、免疫球蛋白M (IgM) 和谷胱甘肽过氧化酶 (GSH-Px) 含量呈线性增加 (Plinear < 0.05),其中10g PMS组显著提高 (PAnova < 0.05),且10 gPMS组较对照组分别提高了17.10%、20.34%、8.00%和15.04%。4) 补饲PMS对母猪初乳中脂肪含量呈线性增加 (Plinear < 0.05) 且显著提高 (PAnova < 0.05),对初乳中非脂乳固体、乳糖、蛋白质呈线性增加 (Plinear < 0.05) 且有显著影响趋势 (0.05 < PAnova < 0.1),其中10 gPMS组较对照组提高了51.42%。【结论】妊娠后期补饲PMS可显著改善母猪粪便评分,缓解母猪便秘,提高母猪的生产性能和机体健康,其中以补饲10 g PMS为最佳剂量。 |
| 英文摘要: |
| 【Objective】The purpose of this experiment was to study the effects of potassium magnesium sulfate (PMS) on sow performance, serum biochemical indexes, antioxidant activity and immune performance in the third trimester of pregnancy, and to systematically evaluate the effects of natural mineral salt PMS rich in potassium and magnesium on sow performance.【Method】Sixty sows with 3-4 parity, good health and similar expected date of delivery in the third trimester of pregnancy (85th day of pregnancy) were randomly divided into 4 groups (control group), groups 1, 2 and 3 with 15 sows in each group and 1 replicate in each head. During pregnancy, the basal diet was designed to meet the reproductive nutrition needs of sows, and the experimental groups were supplemented with PMS at 0, 5, 10 and 15 g/head/day respectively. The experiment started from the 85th day of pregnancy. After the sow gave birth it stopped feeding potassium magnesium sulfate. During lactation, all groups were fed the same commercial lactation feed, and the experimental period ended when the piglets were 18 days old.【Result】1) Supplemental PMS had no significant effects on litter size, healthy litter size, backfat thickness, labor process, body weight, feed intake in sows during lactation, and newborn weight of piglets, number of weaned piglets and number of deaths of suckling piglets (P > 0.05). The fecal score of sows during pregnancy was significantly increased by PMS supplementation (PAnova < 0.05) and showed a linear increase trend (Plinear < 0.05). Compared with the control group, 10g PMS had significant effects on newborn litter weight, weaned litter weight, average litter gain of lactating piglets and standard deviation of daily gain of lactating piglets (PAnova < 0.05), and showed a linear increase (Plinear < 0.05) and quadratic (PQuadratic < 0.05), the 10 gPMS group Compared with the control group, the birth litter weight, weaning litter weight, lactation litter average gain and lactation daily gain of piglets were increased by 16.27%, 24.42%, 35.14% and 31.64%. 2) Supplementation with PMS significantly increased the contents of triglyceride (TG), cholesterol (CHO) and low-density lipoprotein (LDL) in plasma of pregnant sows (PAnova < 0.05) and showed a linear increase trend (Plinear < 0.05), in which TG and LDL had a quadratic effect (PQuadratic < 0.05), the 10 gPMS group increased by 20.00%, 28.35%, 25.00% and 31.98% compared with the control group. 3) Supplementation with PMS linearly increased (Plinear < 0.05) the plasma contents of immunoglobulin G (IgG), immunoglobulin A (IgA), immunoglobulin M (IgM) and glutathione peroxidase (GSH-Px) in sows, and significantly increased in 10g PMS group compared with the control group (PAnova < 0.05), the 10 gPMS group increased by 17.10%, 20.34%, 8.00% and 15.04% compared with the control group. 4) PMS supplementation significantly increased the fat content in colostrum (PAnova < 0.05) and linearly increased it (Plinear < 0.05). and non-fat milk solids, lactose and protein had an increasing trend (0.05 < PAnova < 0.1) and were linearly increased (Plinear < 0.05), the 10 gPMS group increased by 51.42% compared with the control group. 【Conclusion】 PMS supplementation in late gestation can significantly improve the fecal scores of sows, relieved constipation, and improved sow performance and body health, with 10 g of PMS as the optimal dose. |
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