Effect of dietary oil, cholesterol, and soysterols on the lipid concentration and fatty acid composition of egg yolk, liver and serum of laying hens

Poultry Science
J S Sim, D B Bragg


Effect of dietary lipid factors (saturated and unsaturated oil, zoo and phytosterols) on the lipid concentration and fatty acid composition of egg yolk, liver and serum of the laying hen were studied. Single Comb White Leghorn laying hens, at 30 weeks of age, were fed two basal diets containing 8.0% hydrogenated coconut oil (HCO) or safflower oil (SFO), with or without supplemental cholesterol (1.0%), soysterols (2.0%) or combination of both. When HCO basal diet was fed, both liver weight and lipid content were significantly (P less than .01) increased as compared to hens fed the SFO diet. Cholesterol feeding increased total lipid content in liver and serum, whereas soysterol feeding reduce or diminish lipid accumulation caused by the cholesterol treatment. Both dietary cholesterol and soysterols alter the fatty acid composition of liver, serum and egg yolk lipids by increasing oleic acid and decreasing palmitic and/or stearic acids. These changes were significantly greater upon feeding cholesterol than soysterols. However, the simultaneous feeding of cholesterol with soysterols exerted the least effect on the fatty acid composition.


Aug 1, 1989·Archiv für Tierernährung·A M Abdelhamid

Related Concepts

Cocos nucifera
Egg Yolk (Dietary)
Saturated Fat

Trending Feeds


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.

Alzheimer's Disease: MS4A

Variants within the membrane-spanning 4-domains subfamily A (MS4A) gene cluster have recently been implicated in Alzheimer's disease in genome-wide association studies. Here is the latest research on Alzheimer's disease and MS4A.

Pediculosis pubis

Pediculosis pubis is a disease caused by a parasitic insect known as Pthirus pubis, which infests human pubic hair, as well as other areas with hair including eye lashes. Here is the latest research.

Rh Isoimmunization

Rh isoimmunization is a potentially preventable condition that occasionally is associated with significant perinatal morbidity or mortality. Discover the latest research on Rh Isoimmunization here.

Genetic Screens in iPSC-derived Brain Cells

Genetic screening is a critical tool that can be employed to define and understand gene function and interaction. This feed focuses on genetic screens conducted using induced pluripotent stem cell (iPSC)-derived brain cells. It also follows CRISPR-Cas9 approaches to generating genetic mutants as a means of understanding the effect of genetics on phenotype.

Enzyme Evolution

This feed focuses on molecular models of enzyme evolution and new approaches (such as adaptive laboratory evolution) to metabolic engineering of microorganisms. Here is the latest research.

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.

Pharmacology of Proteinopathies

This feed focuses on the pharmacology of proteinopathies - diseases in which proteins abnormally aggregate (i.e. Alzheimer’s, Parkinson’s, etc.). Discover the latest research in this field with this feed.

Alignment-free Sequence Analysis Tools

Alignment-free sequence analyses have been applied to problems ranging from whole-genome phylogeny to the classification of protein families, identification of horizontally transferred genes, and detection of recombined sequences. Here is the latest research.