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

Hatch traits of artificially incubated ostrich eggs as affected by setting position, angle of rotation and season

Brand, Z., Cloete, S.W.P. and Brown, Chris (2020) Hatch traits of artificially incubated ostrich eggs as affected by setting position, angle of rotation and season. South African Journal of Animal Science, 50 (4). pp. 607-612. ISSN 0375-1589

[img]
Preview
Text
Brand et al 2020-Hatch traits of artificially incubated ostrich eggs as affected by setting position, angle of rotation & season.pdf - Published Version
Available under License Creative Commons Attribution.

Download (394kB) | Preview

Abstract

High levels of hatching failure in artificially incubated ostrich eggs cause considerable loss of income for the industry. In the 2015 - 2016 breeding seasons, between 846 and 1 549 egg records were used to determine the effect of various setting positions during artificial incubation. Fresh eggs were placed in trolleys in the setter that were turned automatically hourly through 60 degrees or 90 degrees. The additional treatments as factorial design included eggs set horizontally for five weeks in the setter; in horizontal position for three weeks and vertically for two weeks; and vertically for five weeks. These treatments were repeated over two production years to represent the seasons, namely winter (June to August), spring (September to November), and summer (December). Late embryonic mortalities improved significantly in eggs that were set to turn through 90 degrees (0.16 ± 0.02) compared with those set to turn through 60 degrees (0.28 ± 0.02), regardless of season and setting position. The preferred way of setting ostrich eggs would therefore be vertically in a trolley that turns hourly through 90 degrees with the air cell upwards to utilize incubator space optimally.

Item Type: Article
Additional Information:

The full-text of the online published article can be accessed via the official URL and is available to download from this record.

Copyright resides with the authors in terms of the Creative Commons Attribution 4.0 South African Licence. See: http://creativecommons.org/licences/by/4.0/za
Condition of use: The user may copy, distribute, transmit and adapt work, but must recognise the authors and the South African Journal of Animal Science.

Uncontrolled Discrete Keywords: chick weight, embryonic mortalities, ostrich, pipping time, moisture loss
Subjects: Q Science > Q Science (General)
Q Science > QL Zoology
Divisions: College of Health, Life and Environmental Sciences > School of Science and the Environment
Related URLs:
Copyright Info: Open access article
Depositing User: Chris Brown
Date Deposited: 07 Oct 2020 11:00
Last Modified: 07 Oct 2020 11:00
URI: https://eprints.worc.ac.uk/id/eprint/9837

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.