Szuba-Trznadel Anna, Rząsa Anna, Hikawczuk Tomasz, Fuchs Bogusław
Department of Animal Nutrition and Feed Management, Wrocław University of Environmental and Life Sciences, J. Chełmońskiego 38D, 51-630 Wrocław, Poland.
Department of Immunology, Pathophysiology and Veterinary Preventive Medicine, Wrocław University of Environmental and Life Sciences, C.K. Norwida 31, 50-375 Wrocław, Poland.
Animals (Basel). 2021 Jul 7;11(7):2030. doi: 10.3390/ani11072030.
The aim of this study was to evaluate the effect of zinc (Zn) supplementation in different commercial forms on the growth performance, health status, and Zn balance of weaners in field conditions. The animals were fed pre-starter (from the 28th to 47th day of life) and starter (from the 48th to 74th day of life) mixtures differing in Zn form and concentration. Group I was given ZnSO at 150 mg kg; Group II received pre-starter zinc oxide (ZnO) at 3000 mg kg and starter at 150 mg kg; and Group III was given 150 mg kg of zinc oxide nanoparticles (nZnO). We found that the average daily gain in Group I was significantly lower, compared to Groups II and III. A commonly accepted level of Zn (150 mg kg) as nZnO can be recommended, instead of therapeutic doses of Zn preparations with the same efficiency. Moreover, a lower level of Zn in the diet can prevent the excessive accumulation of this element in waste and, thus, reduce environmental damage.
本研究的目的是评估在实际养殖条件下，不同商业形式的锌（Zn）补充剂对断奶仔猪生长性能、健康状况和锌平衡的影响。给动物饲喂锌形式和浓度不同的预启始料（出生后第28天至47天）和启始料（出生后第48天至74天）混合物。第一组给予150 mg/kg硫酸锌（ZnSO）；第二组接受3000 mg/kg的预启始料氧化锌（ZnO）和150 mg/kg的启始料氧化锌；第三组给予150 mg/kg的氧化锌纳米颗粒（nZnO）。我们发现，与第二组和第三组相比，第一组的平均日增重显著更低。可以推荐使用公认水平的锌（150 mg/kg）作为nZnO，而不是具有相同效率的治疗剂量的锌制剂。此外，日粮中较低水平的锌可以防止该元素在粪便中过度积累，从而减少对环境的破坏。
