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Journal description
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Details for article 6 of 16 found articles
| Title: |
Feeding activity and egg formation in hens lit continuously |
| Author: |
Duncan, I. J. H. Hughes, B. O. |
| Appeared in: |
British poultry science |
| Paging: | Volume 16 (1975) nr. 2 pages 145-155 |
| Year: |
1975-03 |
| Contents: |
1. The feeding patterns of five laying hens were examined in Skinner boxes under conditions of continuous light. 2. Four of the birds maintained a circadian rhythm, in two the rhythm was 24 h while in the other two it was slightly in excess of 24 h. 3. In all birds, feeding activity was less in the 12 h before oviposition than in the 12 h after. 4. When only the first egg of a clutch was considered, it was found that a low level of feeding activity was associated with the release of luteinising hormone (32 h before oviposition), there was then a sharp increase at ovulation to a new level which was maintained from about 23 to 18 h before oviposition and then a decline in feeding occurred until a few hours before laying. 5. There was variation in the amount of feeding activity shown in the few hours before oviposition. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 6 of 16 found articles
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