| The effects of lactation on the relationship between metabolic rate and ambient temperature in the rat. | |
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MedLine Citation:
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PMID: 3977290 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The oxygen consumption rates of virgin and lactating rats fed ad libitum were measured at temperatures ranging from 1 to 28 degrees C. The oxygen consumption rates of the virgin animals decreased progressively with increasing ambient temperature, but those of the lactating animals decreased slightly between 1 and 8 degrees C, remained approximately constant between 8 and 20 degrees C and fell rapidly above 20 degrees C. It is suggested that the fall in oxygen consumption rate above 20 degrees C in the lactating rats was due to a reduction in milk synthesis rate, and that the thermoneutral zone for normal lactation was 8-20 degrees C; this is a substantially cooler range than that of virgin rats (28-29 degrees C). The net energetic efficiency of milk production was calculated from the energy output in milk and the amount of energy used to produce milk (estimated from the oxygen consumption rates). The value obtained was 57.0%. |
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Authors:
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S B Roberts; W A Coward |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Annals of nutrition & metabolism Volume: 29 ISSN: 0250-6807 ISO Abbreviation: Ann. Nutr. Metab. Publication Date: 1985 |
Date Detail:
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Created Date: 1985-03-27 Completed Date: 1985-03-27 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 8105511 Medline TA: Ann Nutr Metab Country: SWITZERLAND |
Other Details:
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Languages: eng Pagination: 19-22 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Body Temperature Regulation* Body Weight Energy Metabolism* Female Lactation* Oxygen / blood Pregnancy Rats |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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