Abstract
IT is generally accepted that urea is toxic when fed at levels greater than 30–35 gm. per sheep a day. Clark et al. 1 produced toxic effects by drenching sheep with 10 gm. of urea. Peirce et al. 2 killed many sheep when they fed 25–45 gm. of urea per sheep a day; in this experiment, the daily ration of urea was consumed over a period of approximately 1 hr. By adjusting the method of feeding, we have found it possible to feed sheep up to 100 gm. of urea a day with no mortality.
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References
Clark, Oyaert and Quin, Onderstepoort J. Vet. Res., 25, 73 (1951).
Peirce, Moule and Jackson, Queensland J. Agric. Sci., 12, 107 (1955).
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COOMBE, J., TRIBE, D. Toxicity of Urea to Sheep. Nature 182, 116–117 (1958). https://doi.org/10.1038/182116a0
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DOI: https://doi.org/10.1038/182116a0
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