Rosenfeld G, Reichmann C E, Jaria L J, Andrade S O
Arq Inst Biol (Sao Paulo). 1976 Jul-Dec;43(3-4):99-103.
Hematological studies were developed on two mares and twelve adults castrate sheeps of "Ideal" breed. The animals had been on a pasture formed with Brachiaria radicans Napper for one and two months respectively. This experiment was developed in winter time, so the leaves of the graminea had a yellow-green color. Clinical and hematological observations were made weekly. The typical symptoms of intoxication failed to present as observed in the former investigation when the plant was green (3). The hematological exames showed only for ovines a slight anemia, it was also characterized as being macrocytic and hypochromic. Some red blood cells with basophillic stippling and the occurrence of anisocytosis was observed in the blood of anemic animals, but no methemoglobin and Heinz bodies were found. The Brachiaria radicans Napper, had a low level of nitrate (2) therefore the animal poisoning must be attributed to another plant component, not nitrate as admited in the first hematological study (12).
对两匹母马和十二只成年阉割的“Ideal”品种绵羊进行了血液学研究。这些动物分别在由拉氏臂形草组成的牧场上放牧了一个月和两个月。该实验在冬季进行，所以禾本科植物的叶子呈黄绿色。每周进行临床和血液学观察。与之前对绿色植物进行调查时观察到的情况不同，此次未出现中毒的典型症状（3）。血液学检查仅显示绵羊有轻微贫血，其特征还表现为大细胞性和低色素性。在贫血动物的血液中观察到一些有嗜碱性点彩的红细胞以及红细胞大小不均一性的出现，但未发现高铁血红蛋白和海因茨小体。拉氏臂形草的硝酸盐含量较低（2），因此动物中毒一定归因于植物的其他成分，而非首次血液学研究（12）中所认为的硝酸盐。
