Hostname: page-component-84b7d79bbc-x5cpj Total loading time: 0 Render date: 2024-07-30T14:12:43.232Z Has data issue: false hasContentIssue false
  • English
  • Français

Nitrogen retention from dietary urea by ewes in late pregnancy

Published online by Cambridge University Press:  27 March 2009

J. J. Parkins
J. J. Parkins
Affiliation:
Glasgow University Veterinary School, Bearsden, Glasgow
Get access Rights & Permissions [Opens in a new window]

Summary

Three separate nitrogen balance experiments were made in three consecutive years. Comparisons of nitrogen retention were made between late-pregnant (15–20 weeks) Greyface (Border Leicester ♂χ Scottish Blackface ♀) ewes given a basal diet of hay and molassed sugar-beet pulp cubes (SBP, 1·25 em diameter x ca. 3cm length) and when given additional nitrogen supplied as urea contained in molassed sugar-beet pulp cubes (SBPU). Both sugar-beet pulp materials were adequately supplemented with minerals and vitamins. Supplementation with urea significantly increased nitrogen retention.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 83 , Issue 3 , December 1974 , pp. 563 - 565
Copyright
Copyright © Cambridge University Press 1974

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Duthie, I. F. (1969). A sheep metabolic cage for mineral balance and radioisotope experiments. Laboratory Practice 8, 408–14.Google Scholar
Robinson, J. J. & Forbes, T. J. (1966). A study of the protein requirements of the mature breeding ewe. 1. Maintenance requirements of the non-pregnant ewe. British Journal of Nutrition 20, 263–72.CrossRefGoogle Scholar
Robinson, J. J. & Forbes, T. J. (1967). A study of the protein requirements of the mature breeding ewe. 2. Protein utilization in the pregnant ewe. British Journal of Nutrition 21, 879–91.CrossRefGoogle ScholarPubMed
Parkins, J. J., Fraser, J., Ritchie, N. S. & Hemingway, R. G. (1974). Urea as a protein source for ewes with twin lambs in late pregnancy and early lactation. Animal Production (in the press).CrossRefGoogle Scholar