Hill G M, Miller E R, Ku P K
J Anim Sci. 1983 Jul;57(1):123-9. doi: 10.2527/jas1983.571123x.
Effects of supplemental dietary Zn levels of 0, 50, 500 and 5,000 ppm on the mineral concentration in milk of first- and second-parity sows were evaluated. Colostrum from sows fed 5,000 ppm of supplemental Zn contained less Cu and P than colostrum from sows on the other treatments. Calcium was reduced in the colostrum from sows fed 0 or 5,000 ppm Zn. Copper was reduced and Zn increased in milk from sows fed the highest Zn level compared with the other treatments during wk 1, 2 and 3 of lactation. Iron was lower in the 2nd wk milk from sows supplemented with 50 ppm Zn compared with sows on the other treatments. Copper and Zn concentrations were reduced in the 1st, 2nd and 3rd wk milk from sows fed 0, 50 or 500 ppm additional Zn compared with colostrum, but only Zn was reduced in milk from sows supplemented with 5,000 ppm Zn compared with colostrum. Calcium concentrations were increased in milk for all treatments compared with colostrum, and Mg was increased in 1st, 2nd and 3rd wk milk from sows fed 0, 50 or 500 ppm Zn and in 2nd and 3rd wk milk from sows fed 5,000 ppm Zn compared with colostrum. Phosphorus was higher in 2nd wk milk from sows fed 0 or 500 ppm Zn and higher in 3rd wk milk for sows fed 0, 500 or 5,000 ppm Zn compared with colostrum. The Fe concentration in 1st wk milk from the second-parity sows was increased compared with that from the first-parity sows for all treatments. Magnesium was reduced in second-parity colostrum compared with first parity for all treatments except the unsupplemented group.
评估了日粮中添加0、50、500和5000 ppm锌水平对初产和经产母猪乳汁中矿物质浓度的影响。饲喂5000 ppm添加锌的母猪所产初乳中的铜和磷含量低于其他处理组母猪的初乳。饲喂0或5000 ppm锌的母猪所产初乳中的钙含量降低。与其他处理相比，在泌乳第1、2和3周，饲喂最高锌水平的母猪所产乳汁中的铜含量降低而锌含量升高。与其他处理相比，添加50 ppm锌的母猪在第2周所产乳汁中的铁含量较低。与初乳相比，饲喂0、50或500 ppm额外锌的母猪在第1、2和3周所产乳汁中的铜和锌浓度降低，但与初乳相比，添加5000 ppm锌的母猪所产乳汁中仅锌含量降低。与初乳相比，所有处理的乳汁中钙浓度均升高，与初乳相比，饲喂0、50或500 ppm锌的母猪在第1、2和3周所产乳汁中的镁含量升高，饲喂5000 ppm锌的母猪在第2和3周所产乳汁中的镁含量升高。与初乳相比，饲喂0或500 ppm锌的母猪在第2周所产乳汁中的磷含量较高，饲喂0、500或5000 ppm锌的母猪在第3周所产乳汁中的磷含量较高。对于所有处理，经产母猪在第1周所产乳汁中的铁浓度高于初产母猪。除未添加组外，所有处理的经产母猪初乳中的镁含量均低于初产母猪。
