[Several cases of nitrite poisoning in broiler breeding hens]
Related Experiment Video
Updated: Jan 25, 2026

Preparation of Rat Skeletal Muscle Homogenates for Nitrate and Nitrite Measurements
Published on: July 29, 2021
Abstract:
Because of insufficient ventilation during winter, water condensation associated with a high concentration of ammonia (70-100 ppm) in the air, occurred on several breeding farms. The ammonia became bound to the condensation water and was converted into nitrites (6000-16000 mg/l) and nitrates (1630-1700 mg/l). Ingestion by the birds resulted in acute death, probably as a result of the high nitrite concentration. The brown colour of the blood pointed to the conversion of haemoglobin to methaemoglobin and this is one of the features of nitrite poisoning.
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