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Relationship of some hematological indicators with gastrointestinal parasites in sheep

机译：绵羊血液学指标与胃肠道寄生虫的关系

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The aim of the present study was to determine the main hematological indicators and their relationships with the level of infestation by gastrointestinal strongylids and the anemia degree in grazing sheep. For this, 62 animals from two productive entities in Rio de Janeiro were sampled by extracting feces directly from the rectus and blood by jugular vein puncture. The parasite load was determined by the McMaster method and the count of red (RBC) and white blood cells (WBC), hemoglobin (HB), hematocrit (Hct), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC) by using an automatic blood analyzer. According to the Hct, the animals were classified as animals with moderated or severe anemia and no anemic animals. Also, the relationship between the hematological variables of the red serie and the parasitic load (Pearson's correlation coefficient) was calculated. The indicators of the red serie were shown to be more affected as the parasitic infestation increased, mainly by Haemonchus contortus, and the animals with severe anemia showed the higher parasite loads and considerable affectations in the amount of red cells, which involved the presence of microcytic microchromic anemia. An inverse relationship between parasite load, the HB and the Hct (p£0.01) was obtained. It was concluded that there was a direct relationship between the parasitism, mainly Haemonchus contortus, and the anemia degree with consequences on the blood red serie.
机译：本研究的目的是确定主要血液学指标及其与胃肠道强虫病侵袭程度和放牧绵羊贫血程度的关系。为此，对来自里约热内卢两个生产实体的62只动物进行了采样，方法是通过颈静脉穿刺直接从直肌和血液中提取粪便。寄生虫负荷是通过McMaster方法确定的，其中红细胞（RBC）和白细胞（WBC），血红蛋白（HB），血细胞比容（Hct），平均红细胞体积（MCV），平均红细胞血红蛋白（MCH）和使用自动血液分析仪的平均血红蛋白浓度（MCHC）。根据Hct，将动物分类为患有中度或严重贫血并且没有贫血动物的动物。同样，计算了红色系列的血液学变量与寄生负荷（皮尔森相关系数）之间的关系。随着寄生虫侵害的增加，红色系列的指示物受到的影响更大，主要是由弯曲变形杆菌（Haemonchus contortus）引起的，严重贫血的动物表现出较高的寄生虫负荷和对红细胞数量的重大影响，其中涉及微胞的存在。微色性贫血。获得了寄生虫负荷，HB和Hct之间的反比关系（p£0.01）。可以得出结论，寄生虫（主要是捻转血矛线虫）与贫血程度之间存在直接关系，而贫血程度会影响血红色系列。

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