University of Worcester Worcester Research and Publications
 
  USER PANEL:
  ABOUT THE COLLECTION:
  CONTACT DETAILS:

The Effect of Dietary Energy and Protein Levels During a Breeding Season of Ostriches (Struthio cemelus domesticus) on Production the Following Season.

Brown, Chris and Brand, Z and Brand, T.S. (2002) The Effect of Dietary Energy and Protein Levels During a Breeding Season of Ostriches (Struthio cemelus domesticus) on Production the Following Season. South African Journal of Animal Science, 32 (4). pp. 226-230. ISSN 0375-1589

Full text not available from this repository. (Request a copy)

Abstract

In a study on ostrich nutrition that spanned three breeding seasons, we assessed the effect of different energy and protein levels in the previous breeding season on production in the following breeding season. During the first breeding season, groups of breeding ostriches were fed diets with energy levels of 8.5, 9.5 and 10.5 MJ metabolisable energy (ME)/kg dry matter (DM) and protein levels of 13.5, 15.0 and 16.5%. Amino acid profile was balanced and was related to the protein content in all cases. In the second breeding season, groups were fed diets with levels of 7.5, 8.5 and 9.5 MJ ME/kg DM and 10.5, 12.0 and 13.5% protein, and during the third breeding season all the breeding birds were fed a single diet of 9.5 MJ ME/kg DM and 12% protein. Different levels of dietary protein in previous years had no effect on egg production, egg weight, fertility, hatchability and initial chick weight in subsequent years of production. Different levels of dietary energy in previous years had no significant effect on the body weight of breeding females, initial egg weight or the percentage of infertile eggs produced over the three seasons, but females fed diets containing only 7.5 MJ ME/kg DM during the second year produced significantly fewer eggs in the third breeding season, resulting in fewer chicks being hatched. It was concluded that there are potential carry-over effects of dietary energy levels from one year to the next and that an energy level of less than 8.5 MJ ME/kg DM in the diet may have an adverse effect on egg production in breeding female ostriches in following breeding seasons.

Item Type: Article
Additional Information:

The electronic full-text for this item can be accessed via the Official URL.

Uncontrolled Keywords: ostriches, breeders, nutrition, protein levels, amino acid levels, carry-over effect
Subjects: S Agriculture > S Agriculture (General)
Q Science > QH Natural history > QH301 Biology
Divisions: Academic Departments > Institute of Science and the Environment
Related URLs:
Depositing User: Chris Brown
Date Deposited: 27 May 2010 08:41
Last Modified: 27 May 2010 08:41
URI: https://eprints.worc.ac.uk/id/eprint/896

Actions (login required)

View Item View Item
 
     
Worcester Research and Publications is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.