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Absorption of nitrogen in sheep fed with urea. 1. Absorption of ammonia, urea, glutamate and glutamine


, : Absorption of nitrogen in sheep fed with urea. 1. Absorption of ammonia, urea, glutamate and glutamine. Zeitschrift fur Tierphysiologie Tierernahrung und Futtermittelkunde 32(2): 64-73

1. Five ewes weighing between 37 and 68 kg were kept in a controlled environment and fed once daily on hay and 100 g of a mixture of urea 10, Malto-dextrin 40 and wheat bran 50 parts; they had water and a mineral lick. After 4 weeks cannulae were introduced into the portal and jugular veins and an electromagnetic flowmeter was inserted to monitor the portal flow; success was achieved in only about one operation in 4. Experiments began about 10 days later.

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