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Electrical Characteristics Based on Resistance and Impedance of Polish Olkuska Sheep Lambs Wool

Volume 17, Issue 9, September 2020, Page 1366-1377
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The aim of the study was to determine the electrical characteristics of wool derived from Polish Olkuska breed lambs. The comparison involved the features of wool both in its natural state and washed. The lambs were bathed on the 1st and 14th days of life. Electrical features were determined on the basis of impedance (Ω) and resistance (Ω) for wool samples from 16 lambs from twin litters. The wool samples were collected from the lambs on the 14th and 35th days of life. The results of blood morphology (RBC, WBC, HGB, HCT, PLT, MCV, MCH, MCHC) were used in order to evaluate the health status of both lambs subjected to bathing and control ones. The level of resistance and impedance at low frequencies in both cases demonstrated the step changes from 0 Ω to over 100 MΩ. This shows that wool has the features of a dielectric (insulator) in the frequency range from 10 Hz to 64 kHz. At a frequency of > 64 kHz, there was a linear trend of decline in the value from about 30 kΩ to the lowest values of resistance and impedance at a frequency of 1 MHz, and these values amounted to > 7.3 kΩ and > 4 kΩ, respectively. The effect of lamb bathing on the electrical properties of wool was demonstrated. These treatments resulted in an increase in resistance of wool from 35-day-old lambs bathed on the 14th day of life compared to the control group (maximum differences at the level of 40–50%). In turn, wool of lambs bathed on the 1st day of life had lower resistance than wool from lambs in the control group, on average 10–20% lower. No significant correlations were demonstrated between bathing treatment and lamb health status, except for higher levels of leukocytes in the 14-day-old lambs subject to bathing on the 1st day of life compared to the control, which amounted to 8.76 x 109/L, and 6.38 x 109/L (P ≤ 0.05), respectively.

摘要

本研究的目的是确定波兰olkuska品种羔羊毛的电气特性.比较涉及羊毛在自然状态和水洗状态下的特性.羔羊在出生的第一天和第十四天洗澡.根据16只双胎羊羔的羊毛样品的阻抗(Ω)和电阻(Ω)测定其电特性.这些羊毛样本是在羊羔出生的第14天和第35天采集的.采用血液形态学(RBC、WBC、HGB、HCT、PLT、MCV、MCH、MCHC)结果,对两只沐浴羔羊和对照羔羊的健康状况进行评价.在这两种情况下,低频下的电阻和阻抗水平都显示出阶跃变化从0Ω到超过100MΩ.这表明羊毛在10赫兹到64千赫的频率范围内具有电介质(绝缘体)的特性.在频率大于64kHz时,在频率为1MHz时,电阻和阻抗的值从约30kΩ下降到最低值,并且这些值分别大于7.3kΩ和>4kΩ.研究了羊羔浴对羊毛电性能的影响.与对照组相比,这些处理使第14天洗澡的35天龄羔羊的羊毛阻力增加(最大差异为40-50%).反过来,在出生第一天洗澡的羔羊的毛的阻力比对照组的羔羊低,平均低10-20%.沐浴治疗与羔羊健康状况之间无显著相关性,但与对照组相比,第1天洗澡的14天大羔羊的白细胞水平更高,分别为8.76 x 109/L和6.38 x 109/L(p≤0.05).

Source: https://www.tandfonline.com/doi/full/10.1080/15440478.2019.1568347?af=R

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Republished by Plato

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Republished by Plato

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