Georgiev P, Nikolov I, Simeonov S P, Iordanova V
Vet Med Nauki. 1987;24(10):58-62.
Experimental researches were carried out on sheep, fed with forage, containing 0.6% nitrate in the dry substance of the ration with the aim to follow the dynamics of the thyroid hormones, respectively the functions of the thyroid gland and its connection with some hematologic and biochemical indexes in the blood (methaemoglobin, blood sugar, carotene and vitamin A). It is ascertained that T3 and T4 decrease during the development of chronic nitrate poisoning, and the blood sugar and methaemoglobin are increased. The quantity of carotene and vitamin A is decreased, as a hypovitaminosis condition of the animal organism is achieved.
对以日粮干物质中含0.6%硝酸盐的草料喂养的绵羊进行了实验研究，目的是追踪甲状腺激素的动态变化，即甲状腺的功能及其与血液中一些血液学和生化指标（高铁血红蛋白、血糖、胡萝卜素和维生素A）的关系。已确定在慢性硝酸盐中毒发展过程中，T3和T4降低，血糖和高铁血红蛋白升高。由于动物机体出现维生素缺乏症，胡萝卜素和维生素A的量减少。
