title: [Dynamics of thyroid hormones and hematological and biochemical indices in chronic nitrate poisoning in sheep].
abstract: 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.
authors.forename: P
authors.initials: P
authors.lastname: Georgiev
authors.forename: I
authors.initials: I
authors.lastname: Nikolov
authors.forename: S P
authors.initials: SP
authors.lastname: Simeonov
authors.forename: V
authors.initials: V
authors.lastname: Iordanova
mesh_terms: D000821:Animal Feed / Q000506:poisoning; D000818:Animals; D002908:Chronic Disease; D005260:Female; D009566:Nitrates / Q000506:poisoning*; D011247:Pregnancy; D012756:Sheep; D012757:Sheep Diseases / Q000097:blood / Q000139:chemically induced*; D013961:Thyroid Gland / Q000187:drug effects / Q000503:physiopathology; D013963:Thyroid Hormones / Q000097:blood*; D013997:Time Factors; D014802:Vitamin A Deficiency / Q000097:blood / Q000139:chemically induced / Q000662:veterinary
chemical_list: D009566:Nitrates; D013963:Thyroid Hormones
vernacular_title: Dinamika na tireoidnite khormoni i niakoi khematologichni i biokhimichni pokazateli pri khronichno nitratno otraviane na ovtse.