منابع مشابه
Limits to sustained energy intake. VII. Milk energy output in laboratory mice at thermoneutrality.
The limits to sustained energy intake at peak lactation could be imposed peripherally, by the capacity of the mammary glands, or centrally, by the capacity of the animal to dissipate body heat generated as a by-product of processing food and producing milk. To distinguish between the two hypotheses, we examined milk energy output at peak lactation in MF1 laboratory mice exposed to 30 degrees C ...
متن کاملLimits to sustained energy intake. XV. Effects of wheel running on the energy budget during lactation.
The capacity of animals to dissipate heat may constrain sustained energy intake during lactation. We examined these constraints at peak lactation in MF1 mice that had ad libitum access to food, or that had to run a pre-set target on running wheels to obtain ad libitum access to food. The voluntary distance run decreased sharply during pregnancy and peak lactation. When lactating females were pr...
متن کاملLimits to sustained energy intake. XVIII. Energy intake and reproductive output during lactation in Swiss mice raising small litters.
Limits to sustained energy intake (SusEI) during lactation in Swiss mice have been suggested to reflect the secretory capacity of the mammary glands. However, an alternative explanation is that milk production and food intake are regulated to match the limited growth capacity of the offspring. In the present study, female Swiss mice were experimentally manipulated in two ways - litter sizes wer...
متن کاملLimits to sustained energy intake. XVI. Body temperature and physical activity of female mice during pregnancy.
Lactation is the most energy-demanding phase of mammalian reproduction, and lactation performance may be affected by events during pregnancy. For example, food intake may be limited in late pregnancy by competition for space in the abdomen between the alimentary tract and fetuses. Hence, females may need to compensate their energy budgets during pregnancy by reducing activity and lowering body ...
متن کاملLimits to sustained energy intake. XIV. Heritability of reproductive performance in mice.
Limits to sustained energy intake (SusEI) are important because they constrain many aspects of animal performance. Individual variability in SusEI may be imposed by genetic factors that are inherited from parents to offspring. Here, we investigated heritability of reproductive performance in MF1 mice. Food intake, milk energy output (MEO) and litter mass were measured in mothers (F0) and daught...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2001
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.204.11.1957