Abstract
1. It has been shown that under a given feeding régime the concentration of blood urea in the sheep is constant.2. Changes in the diet lead to different levels of blood-urea concentration which can be correlated with different rumen-ammonia concentrations; the change in blood-urea concentration follows increases or decreases in rumen ammonia after a delay period of 4–8 hr.3. Fluctuations in blood-urea concentration in the sheep are not primarily due to changes in the overall nitrogen intake.4. It is suggested that these findings might form the basis of a supplementary test in assessing the value of the protein in a foodstuff for ruminants.
Publisher
Cambridge University Press (CUP)
Subject
Genetics,Agronomy and Crop Science,Animal Science and Zoology
Cited by
193 articles.
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