Deeming, D. C. and Hodges, H. R. and Cooper, J. J. (2011) Effect of sight barriers in pens of breeding ring-necked pheasants (Phasianus colchicus): II. Reproductive parameters. British Poultry Science, 52 (4). pp. 415-422. ISSN 0007-1668
#166_Deeming_et_al._BPS.pdf - Whole Document
Restricted to Repository staff only
Official URL: http://dx.doi.org/10.1080/00071668.2011.587182
Abstract 1. The effects of sight barriers in the pens of breeding ring-necked pheasants were investigated on a commercial game farm over a 10-week laying season.
2. Reproductive performance was recorded as egg production, numbers of eggs rejected for hatching together with measures of fertility, embryonic mortality and hatchability for 11 pens with barriers and 11 pens that were left open and acted as controls.
3. Egg production per pen and the numbers of rejected eggs were not significantly affected by the presence of the barriers.
4. Fertility was significantly higher and persisted for longer in the barrier pens, particularly towards the end of the laying season.
5. Embryonic mortality was unaffected by the presence of the barriers but hatchability was significantly lower in the open pens, which was associated with lower levels of fertility.
6. Establishing sight barriers in breeder pens for commercial pheasants would appear not only to offer
improved welfare but also significant commercial advantages.
|Keywords:||Fertility, Pheasant, Hatchability|
|Subjects:||C Biological Sciences > C140 Developmental/Reproductive Biology|
|Divisions:||College of Science > School of Life Sciences|
|Deposited By:||Charles Deeming|
|Deposited On:||05 Oct 2011 18:15|
|Last Modified:||28 Aug 2014 12:09|
Repository Staff Only: item control page