1947
The Journal of Experimental Biology 204, 1947–1956 (2001) Printed in Great Britain © The Company of Biologists Limited 2001 JEB2678
LIMITS TO SUSTAINED ENERGY INTAKE III. EFFECTS OF CONCURRENT PREGNANCY AND LACTATION IN MUS MUSCULUS
M. S. JOHNSON, S. C. THOMSON AND J. R. SPEAKMAN* Aberdeen Centre for Energy Regulation and Obesity (ACERO), Department of Zoology, University of Aberdeen, Aberdeen AB24 2TZ, Scotland, UK *Author for correspondence (e-mail:
[email protected])
Accepted 11 March 2001 Summary To determine whether mice were limited in their P=0.046) and negatively related to mean pup mass capacity to absorb energy during late lactation, we (F1,19=5.78, P=0.027) in the first lactation. In the second attempted to increase the energy burden experienced by a lactation, the experimental mice gave birth to more (t=2.75, group of female mice during late lactation by mating them d.f.=38, P=0.0092) and lighter (t=−5.01, d.f.=38, P
