Related Experiment Video
Updated: Jul 10, 2026

Catheterization of Intestinal Loops in Ruminants
Published on: June 11, 2009
Amaranthus hybridus (syn. quitensis) intoxication in cattle in Argentina: Case report
Juan Agustín García1, Gina Rustichelli Millán1, Valeria Scioli1
1Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS, INTA Balcarce-CONICET), RN 226 Km 73.5, Balcarce, 7620, Buenos Aires, Argentina.
Abstract:
Amaranthus spp. is a nephrotoxic plant with unknown toxic principle, affecting production animals worldwide, mainly in South America. The aim of this paper is to describe 5 spontaneous outbreaks of A. hybridus intoxication in beef cattle, where 7 autopsies were performed. Main gross findings were pale diffuse and enlarged kidneys. Microscopically, kidneys were characterized by severe tubular acute to subacute nephrosis, with dilatated tubules showing different degrees of epithelial degeneration and necrosis, and containing intraluminal eosinophilic hyaline casts. Intratubular birefringent crystals, compatible with oxalate, were observed under polarized light in kidneys from 3 autopsies. Positive von Kossa and red alizarin S staining confirmed the intratubular crystals as calcium deposits. This intoxication occurs mainly in stubble paddocks during summer and early autumn. The data from the present study suggests that oxalates were related to nephrotoxicity due to Amaranthus consumption.
More Related Videos
15:57Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle
Published on: July 11, 2015
05:55How to Create Conditioned Taste Aversion for Grazing Ground Covers in Woody Crops with Small Ruminants
Published on: April 30, 2016
Related Concept Videos
Physical Properties of Amines
Anticholinesterase Agents: Poisoning and Treatment
Irreversible agents form a strong bond with the cholinesterase enzyme, making it inactive. The breakdown of the phosphorylated enzyme is slower than the...
Toxicity Testing in Animals
Pharmaceutical Poisoning: Potential Scenarios
Pharmaceutical Poisoning: Treatment Strategies
Inhalation Anthrax