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Studies on the adaptation of the rumen to the hydrolysis of biuret in cattle

Published online by Cambridge University Press:  27 March 2009

A. C. Kondos
A. C. Kondos
Affiliation:
Department of Animal Industries, Queensland Agricultural College, Lawes, Queensland, Australia
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Summary

Studies on the adaptation of cattle to the hydrolysis of biuret and on the response of rumen ammonia level to the introduction of 50, 100 or 150 g of feed-grade biuret showed that (1) the rate of ruminal adaptation to the hydrolysis of biuret increased to a maximum effective level of about 350 mg/24 h/100 ml within 10 days when a readily available energy source was fed, (2) a single dose of 50, 100 or 150 g/day of biuret was associated with a prolonged increase of rumen NH3 concentration. The magnitude of the increase was 8–9 mg/100 ml for every 50 g of added biuret, (3) adapted rumens retained their biuretolytic activity for several weeks, and responded to the re-introduction of biuret into the diet by increasing to a near maximum rate within 24–48 h.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 85 , Issue 2 , October 1975 , pp. 351 - 357
Copyright
Copyright © Cambridge University Press 1975

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