PMID: 2506923Jul 1, 1989Paper

Lipid metabolism in shorn and unshorn pregnant sheep

The British Journal of Nutrition
Michael E SymondsM A Lomax

Abstract

The aim of the present study was to determine how the long-term metabolic adaptations to winter shearing of the pregnant ewe result in significant changes in the rates of lipid mobilization and utilization of non-esterified fatty acids (NEFA) in comparison with unshorn controls. Continuous infusions of [1-14C]palmitic acid, [2-3H]glycerol and NaH14CO3 were used to measure whole-body lipid metabolism in fed (estimated metabolizable energy (ME) intake 9.54 MJ/d) and under-fed (estimated ME intake of 3 MJ/d), shorn and unshorn sheep over the final 4 weeks of pregnancy. Whole-body carbon dioxide, estimated heat production, total NEFA entry and oxidation rates were all significantly higher in fed shorn ewes compared with unshorn controls, even though there was no difference in the arterial plasma NEFA concentration. These differences may be mediated via an increase in the plasma concentrations of thyroid hormones in shorn animals. As a result of under-feeding any significant differences in lipid metabolism between shorn and unshorn groups were removed. In all sheep the mean total NEFA entry rate as measured using [1-14C]palmitic acid was 3.4 times the value obtained using [2-3H]glycerol. It is concluded that when sheep are fed on a ...Continue Reading

References

Apr 1, 1975·Quarterly Journal of Experimental Physiology and Cognate Medical Sciences·G E ThompsonA W Bell
Nov 1, 1975·The American Journal of Physiology·R P BrockmanJ G Manns
Sep 1, 1988·The British Journal of Nutrition·M E SymondsM A Lomax
Nov 1, 1986·The British Journal of Nutrition·M E SymondsM A Lomax
Feb 1, 1973·Journal of Dairy Science·K S Sidhu, R S Emery
Mar 1, 1973·Journal of Dairy Science·Y T Yang, R L Baldwin
Nov 1, 1973·Analytical Biochemistry·R H Hammerstedt
Oct 1, 1968·The American Journal of Physiology·E N Bergman
Oct 11, 1968·The American Journal of Physiology·E N BergmanS S Reulein
Sep 1, 1983·The British Journal of Nutrition·S WilsonP J Buttery
Sep 1, 1983·The British Journal of Nutrition·G D BairdE N Bergman
Jan 1, 1981·Australian Journal of Biological Sciences·C B GowE F Annison
Jan 1, 1980·Progress in Lipid Research·R G Vernon
Jan 1, 1962·The British Journal of Nutrition·K L BLAXTER

❮ Previous
Next ❯

Citations

Jan 31, 2006·The British Journal of Nutrition·H M R GreatheadP J Buttery
Jan 1, 1996·Nutrition Research Reviews·M E Symonds, L Clarke
Nov 25, 2014·The Journal of Endocrinology·Neele S DellschaftSylvain P Sebert

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.