National Office for Food Safety (ONSSA), Rabat, Morocco.
UMR SELMET, CIRAD-ES, Montpellier, France.
Biol Trace Elem Res. 2020 Dec;198(2):472-477. doi: 10.1007/s12011-020-02073-3. Epub 2020 Feb 7.
Zinc plays a major role in skin integrity, which can be affected by dromedary camels' hard life conditions. Deficiencies in some trace elements especially in zinc can explain susceptibility of this species to skin diseases. Compared with ruminants, camel is already known for his relatively low zincemia. In order to assess dromedary camels' skin zinc content, the present study was carried out in several provinces located in the south of Morocco where camel skin diseases are commonly observed. Zinc content in dromedary camel skin was determined using for the first time laser-induced breakdown spectroscopy (LIBS), method considered so far quick and simple with few or no sample processing. Collected data showed that zinc skin contents ranged between 115 ± 60 (for external side) and 94 ± 82 ppm (for internal side) with significant variability according to animals and to skin layers (external side versus internal side). Zinc skin content decreased from external to internal layers. Such preliminary results could be used to compare skin zinc nutritional level in healthy camels with those affected by skin diseases.
锌在皮肤完整性中起着重要作用，而这一完整性可能会受到单峰驼艰苦生活条件的影响。一些微量元素的缺乏，特别是锌的缺乏，可以解释该物种易患皮肤病的原因。与反刍动物相比，骆驼已经以相对较低的血锌水平而闻名。为了评估单峰驼的皮肤锌含量，本研究首次在摩洛哥南部的几个省进行，这些地区通常观察到骆驼的皮肤疾病。本研究首次使用激光诱导击穿光谱（LIBS）法来确定单峰驼皮肤中的锌含量，该方法被认为迄今为止是快速简单的，几乎不需要或不需要对样品进行处理。收集的数据表明，锌的皮肤含量在 115±60（外侧）和 94±82ppm（内侧）之间变化，根据动物和皮肤层（外侧与内侧）的不同而有显著的差异。锌的皮肤含量从外到内逐渐减少。这些初步结果可用于比较健康骆驼和患有皮肤疾病的骆驼的皮肤锌营养水平。
