J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Prunier, A.
Right arrow Articles by Etienne, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Prunier, A.
Right arrow Articles by Etienne, M.

Journal of Animal Science, Vol 72, Issue 6 1461-1466, Copyright © 1994 by American Society of Animal Science

JOURNAL ARTICLE

Effect of light regimen under various ambient temperatures on sow and litter performance

A. Prunier, J. Y. Dourmad and M. Etienne
Station de Recherches Porcines, Institut National de la Recherche Agronomique, Saint Gilles, France.

Primiparous Large White females were exposed to one of two light regimens characterized by an increase (from 12 to 16 h/d, LONG treatment) or a decrease (from 12 to 8 h/d, SHORT treatment) in photoperiod during gestation. Two successive replicates were conducted, and farrowings occurred in January and July. During the last month of gestation, during lactation and after weaning, ambient temperatures varied between 18 and 25 degrees C and between 25 and 38 degrees C for the first and second replicates, respectively. Weaning occurred at 3 wk postpartum. Percentage of sows in estrus within 10 d after weaning was higher (P < .05) in the SHORT than in the LONG group for both replicates and when farrowing occurred in January compared with July for both photoperiod groups (SHORT-January: 92%, LONG-January: 53%, SHORT-July: 32%, LONG-July: 14%). Loss of live weight in sows during lactation was higher in July than in January and higher in the SHORT than in the LONG photoperiod (P < .05). Live weight of pigs at birth was higher in July than in January, whereas growth rate of pigs until weaning was higher in January (P < .05). Temperature may have a greater influence on sow and litter performance than photoperiod.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
A. K. Johnson, F. M. Mitloehner, J. L. Morrow, and J. J. McGlone
Effects of shaded versus unshaded wallows on behavior, performance, and physiology of the outdoor lactating sow
J Anim Sci, December 1, 2008; 86(12): 3628 - 3634.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
S. R. Niekamp, M. A. Sutherland, G. E. Dahl, and J. L. Salak-Johnson
Photoperiod influences the immune status of multiparous pregnant sows and their piglets
J Anim Sci, August 1, 2006; 84(8): 2072 - 2082.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1994 by the American Society of Animal Science.