Sisk D B, Colvin B M, Bridges C R
Tifton Veterinary Diagnostic and Investigational Laboratory, College of Veterinary Medicine, University of Georgia, Tifton 31793.
J Am Vet Med Assoc. 1988 Oct 15;193(8):943-5.
Twenty-six cows died after accidental exposure to boron fertilizer. Cows developed diarrhea, weakness, ataxia, signs of depression, and died, usually within a few hours. Seizure-like behavior was noticed in 2 cows, and 2 were suspected of aborting. High boron concentrations in tissues from affected cows confirmed ingestion of an appreciable amount of boron fertilizer. In an attempt to confirm the diagnosis of boron poisoning, boron fertilizer was administered to goats. A kid goat given 3.6 g of fertilizer/kg of body weight developed clinical signs similar to those seen in the cattle. Boron compounds such as sodium borate and boric acid have been considered generally nontoxic, and reports of livestock toxicosis are uncommon. This case report suggests that these compounds may be palatable under certain circumstances leading to ingestion of toxic quantities.
26头奶牛在意外接触硼肥后死亡。奶牛出现腹泻、虚弱、共济失调、抑郁症状，通常在几小时内死亡。2头奶牛出现类似癫痫的行为，2头疑似流产。患病奶牛组织中高浓度的硼证实其摄入了相当数量的硼肥。为了确诊硼中毒，给山羊投喂硼肥。一只幼山羊按每千克体重3.6克的剂量投喂硼肥后，出现了与牛相似的临床症状。硼化合物如硼酸钠和硼酸通常被认为无毒，家畜中毒的报告并不常见。本病例报告表明，这些化合物在某些情况下可能会变得可口，从而导致摄入有毒剂量。
