Upadhaya Santi Devi, Seok Woo Jeong, Kumar Shanmugam Suresh, van der Veen Rudolf H, Kim In Ho
Department of Animal Resource and Science, Dankook University, Cheonan 31116, Korea.
Celtic Sea Minerals, Cork P43 NN62, Ireland.
J Anim Sci Technol. 2023 May;65(3):562-578. doi: 10.5187/jast.2022.e121. Epub 2023 May 31.
The aim of the present study was to evaluate the effects of dietary supplementation of Ca-Mg complex on the longevity and reproductive performance of sows. In total, seventy-two gilts ([Yorkshire × Landrace] × Duroc, average body weight 181 kg) were randomly allocated to 1 of 3 treatments during 4 successive parity in a 4 × 3 factorial arrangement. Treatments consisted of CON (basal diet), CM1 (basal diet -MgO - 0.3% limestone + 0.4% Ca-Mg complex), and CM2 (basal diet - MgO - 0.7% limestone + 0.4% Ca-Mg complex). A higher ( < 0.05) number of totals born and live piglets, and sows increased feed intake during gestation and lactation, increased backfat thickness, and increased estrus interval were observed ( < 0.05) during their third and fourth parity than during their first and second parity. Ca-Mg complex supplementation improved ( < 0.05) the number of total piglets during the first and second parity as well as live-born piglets during the first to third parity, reduction ( < 0.05) in backfat thickness during the third and fourth parity, a higher ( < 0.05) initial and final number of suckling piglets as well as higher weaning weight compared with sows fed CON diet during the first, second, and third parity. The average daily gain (ADG) was higher ( < 0.05) in piglets born to CM1 and CM2 sows regardless of parity. The treatment diets fed to sows lowered ( < 0.05) the duration of first to last piglet birth and placenta expulsion time compared with CON sows. A significant interactive effect ( = 0.042) between parities and treatment diets was observed for the first to last piglet birth. Thus, Ca-Mg complex supplementation by partially replacing limestone in the basal diet enhanced sow performance, specifically during their third and fourth parity, thereby improving sow longevity.
本研究的目的是评估日粮中添加钙镁复合物对母猪寿命和繁殖性能的影响。总共72头后备母猪（[约克夏×长白]×杜洛克，平均体重181千克）在4个连续胎次中按4×3析因设计随机分配到3种处理中的1种。处理包括对照组（基础日粮）、CM1组（基础日粮 - 氧化镁 - 0.3%石灰石 + 0.4%钙镁复合物）和CM2组（基础日粮 - 氧化镁 - 0.7%石灰石 + 0.4%钙镁复合物）。与第一和第二胎次相比，第三和第四胎次时观察到总产仔数和活仔数增加（P<0.05），母猪在妊娠期和哺乳期的采食量增加、背膘厚度增加以及发情间隔增加（P<0.05）。添加钙镁复合物提高了（P<0.05）第一和第二胎次的总产仔数以及第一至第三胎次的活产仔数，第三和第四胎次背膘厚度降低（P<0.05），与第一、第二和第三胎次饲喂对照组日粮的母猪相比，第一和最后一窝哺乳仔猪的初始和最终数量更多（P<0.05），断奶体重更高。无论胎次如何，CM1和CM2组母猪所产仔猪的平均日增重（ADG）更高（P<0.05）。与对照组母猪相比饲喂给母猪的处理日粮缩短了（P<0.05）第一头至最后一头仔猪出生的持续时间和胎盘排出时间。对于第一头至最后一头仔猪出生，观察到胎次和处理日粮之间存在显著的交互作用（P = 0.042）。因此，通过在基础日粮中部分替代石灰石来添加钙镁复合物可提高母猪性能，特别是在第三和第四胎次期间，从而提高母猪寿命。
