Lipid metabolism in laying hens. The relationship of plasma lipids and liver fatty acid synthetase activity to changes in liver composition. 1978

M S Wagner, and J L Kelley, and E C Nelson, and P Alaupovic, and R H Thayer

Plasma and liver samples were taken from a random sample of caged commercial hybrid layer hens which had been in egg production for fifteen months. The concentration of plasma and liver lipids and the activity of liver fatty acid synthetase (FAS) were measured in laying hens with liver weight of 20 to 53 g. Liver total lipid, water, non-lipid, and cytosolic fractions, which are the four major liver components, increased linearly with respect to wet liver weight. FAS activity increased with all liver components. Accumulation of lipid in the liver did not inhibit FAS activity. Total cholesterol, free cholesterol, esterified cholesterol, triglycerides, and phosphorous were measured on each plasma sample. Multiple regression analysis showed that all plasma lipids, except cholesterol esters, were related cubically with increasing wet liver weight and cytosolic protein.

UI MeSH Term Description Entries
D008055 Lipids A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed) Lipid
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D010058 Oviposition The process of laying or shedding fully developed eggs (OVA) from the female body. The term is usually used for certain INSECTS or FISHES with an organ called ovipositor where eggs are stored or deposited before expulsion from the body. Larviposition,Larvipositions,Ovipositions
D011506 Proteins Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein. Gene Products, Protein,Gene Proteins,Protein,Protein Gene Products,Proteins, Gene
D002645 Chickens Common name for the species Gallus gallus, the domestic fowl, in the family Phasianidae, order GALLIFORMES. It is descended from the red jungle fowl of SOUTHEAST ASIA. Gallus gallus,Gallus domesticus,Gallus gallus domesticus,Chicken
D002784 Cholesterol The principal sterol of all higher animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils. Epicholesterol
D003600 Cytosol Intracellular fluid from the cytoplasm after removal of ORGANELLES and other insoluble cytoplasmic components. Cytosols
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014280 Triglycerides An ester formed from GLYCEROL and three fatty acid groups. Triacylglycerol,Triacylglycerols,Triglyceride

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