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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
Affiliation:
Department of Animal Industries, Queensland Agricultural College, Lawes, Queensland, Australia

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
Copyright
Copyright © Cambridge University Press 1975

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References

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