scholarly journals Select 3-Hydroxy-3-Methylglutaryl-Coenzyme A Reductase Inhibitors Vary in Their Ability to Reduce Egg Yolk Cholesterol Levels in Laying Hens through Alteration of Hepatic Cholesterol Biosynthesis and Plasma VLDL Composition

1999 ◽  
Vol 129 (5) ◽  
pp. 1010-1019 ◽  
Author(s):  
Robert G. Elkin ◽  
Zhihong Yan ◽  
Yuan Zhong ◽  
Shawn S. Donkin ◽  
Kimberly K. Buhman ◽  
...  
Keyword(s):  
Coenzyme A ◽  
Laying Hens ◽  
Cholesterol Biosynthesis ◽  
Egg Yolk ◽  
Hepatic Cholesterol ◽  
Reductase Inhibitors ◽  
Cholesterol Levels ◽  
Yolk Cholesterol ◽  
Coenzyme A Reductase

scholarly journals Effect of Dietary Factors on Serum and Egg Yolk Cholesterol Levels of Laying Hens

1977 ◽  
Vol 56 (5) ◽  
pp. 1616-1621 ◽  
Author(s):  
J.S. SIM ◽  
D.B. BRAGG
Keyword(s):  
Laying Hens ◽  
Egg Yolk ◽  
Dietary Factors ◽  
Cholesterol Levels ◽  
Yolk Cholesterol

Effect of Dietary Lipid-Lowering Drugs upon Plasma Lipids and Egg Yolk Cholesterol Levels of Laying Hens

1999 ◽  
Vol 47 (11) ◽  
pp. 4731-4735 ◽  
Author(s):  
Agnes V. Mori ◽  
Cassio X. Mendonça, ◽  
Cristiane O. F. Santos
Keyword(s):  
Plasma Lipids ◽  
Laying Hens ◽  
Egg Yolk ◽  
Dietary Lipid ◽  
Lipid Lowering ◽  
Lipid Lowering Drugs ◽  
Cholesterol Levels ◽  
Yolk Cholesterol

EFFECT OF AN ANTIBIOTIC ON LIPID FRACTIONS IN PLASMA AND EGG YOLK OF LAYING HENS

1963 ◽  
Vol 41 (10) ◽  
pp. 2171-2175
Author(s):  
P. J. Lupien ◽  
F. A. Vandenheuvel ◽  
W. G. Hunsaker ◽  
G. V. Hatina
Keyword(s):  
Egg Production ◽  
Species Differences ◽  
Laying Hens ◽  
Plasma Cholesterol ◽  
Egg Yolk ◽  
Human Beings ◽  
Cholesterol Levels ◽  
Lipid Fractions ◽  
Egg Yolks ◽  
Yolk Cholesterol

Supplementation of the basal ration of laying hens with 0.001, 0.005, and 0.01% neomycin sulphate did not produce any significant changes in the weight of the hens, their eggs, or egg yolks, nor did it alter egg production. Supplemental neomycin caused no significant changes in levels of plasma cholesterol. Plasma and yolk lipid levels varied considerably within as well as between groups of hens. Plasma squalene/plasma cholesterol and yolk squalene/yolk cholesterol ratios were approximately the same, indicating the presence of 250 times more cholesterol than squalene. Plasma squalene/yolk squalene and plasma cholesterol/yolk cholesterol ratios showed that both components were approximately 13 times more concentrated in the yolk than in the plasma. The variable plasma cholesterol levels for rats, rabbits, mice, human beings, as well as the laying hen, treated with neomycin, are suggestive of species differences in response.

scholarly journals Dietary Supplementation of Probiotic Lactobacillus acidophilus Modulates Cholesterol Levels, Immune Response, and Productive Performance of Laying Hens

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1588 ◽  
Author(s):  
Abdulaziz A. Alaqil ◽  
Ahmed O. Abbas ◽  
Hossam S. El-Beltagi ◽  
Hanaa. K. Abd El-Atty ◽  
Gamal M. K. Mehaisen ◽  
...  
Keyword(s):  
Immune Response ◽  
Lactobacillus Acidophilus ◽  
Laying Hens ◽  
Density Lipoprotein ◽  
Dietary Supplementation ◽  
Egg Yolk ◽  
Egg Mass ◽  
Productive Performance ◽  
Cholesterol Levels ◽  
Yolk Cholesterol

This study examines the effect of dietary supplementation with Lactobacillus acidophilus (LA) on the cholesterol levels, immune response, and productive performance of laying hens. A total of 216, 40-week-old, commercial Hy-Line brown chicken layers were randomly assigned into four treatment groups (18 birds × three replicates per group) and fed diet supplemented with 0 (control), 1 × 109, 21 × 109, and 31 × 109 colony forming units (CFUs) of Lactobacillus acidophilus (LA) per kg of feed for six consecutive weeks. Results show that plasma triglycerides, low-density lipoprotein (LDL) and total cholesterols became lesser, while high-density lipoprotein (HDL) cholesterol became higher in LA-supplemented groups compared to the control. In addition, a significant reduction occurred in the liver and egg yolk cholesterol by LA supplementation. Moreover, the immunological parameters including antibody titer against sheep red blood cells (SRBCs), phytohemagglutinin (PHA)-wattle swelling test, and T- & B-lymphocyte proliferation were enhanced in laying hens supplemented with LA compared to the control hens. While the heterophil to lymphocyte (H/L) ratio decreased with LA supplementation, indicating low stress conditions in the treated hens. These positive effects for LA were further reflected on the productive performance of laying hens and improved egg production, egg weight, egg mass, and feed efficiency. Our findings indicate that LA probiotic could be recommended in laying hens’ diets for lowering egg yolk cholesterol with positive impacts on health and performance.

EFFECT OF AN ANTIBIOTIC ON LIPID FRACTIONS IN PLASMA AND EGG YOLK OF LAYING HENS

1963 ◽  
Vol 41 (1) ◽  
pp. 2171-2175
Author(s):  
P. J. Lupien ◽  
F. A. Vandenheuvel ◽  
W. G. Hunsaker ◽  
G. V. Hatina
Keyword(s):  
Egg Production ◽  
Species Differences ◽  
Laying Hens ◽  
Plasma Cholesterol ◽  
Egg Yolk ◽  
Human Beings ◽  
Cholesterol Levels ◽  
Lipid Fractions ◽  
Egg Yolks ◽  
Yolk Cholesterol

Supplementation of the basal ration of laying hens with 0.001, 0.005, and 0.01% neomycin sulphate did not produce any significant changes in the weight of the hens, their eggs, or egg yolks, nor did it alter egg production. Supplemental neomycin caused no significant changes in levels of plasma cholesterol. Plasma and yolk lipid levels varied considerably within as well as between groups of hens. Plasma squalene/plasma cholesterol and yolk squalene/yolk cholesterol ratios were approximately the same, indicating the presence of 250 times more cholesterol than squalene. Plasma squalene/yolk squalene and plasma cholesterol/yolk cholesterol ratios showed that both components were approximately 13 times more concentrated in the yolk than in the plasma. The variable plasma cholesterol levels for rats, rabbits, mice, human beings, as well as the laying hen, treated with neomycin, are suggestive of species differences in response.

scholarly journals Effects of cholestyramine and lovastatin upon plasma lipids and egg yolk cholesterol levels of laying hens

2000 ◽  
Vol 37 (1) ◽  
pp. 00-00 ◽  
Author(s):  
Agnes Veridiana MORI ◽  
Cássio Xavier de MENDONÇA Jr. ◽  
Claudio WATANABE
Keyword(s):  
Plasma Lipids ◽  
Laying Hens ◽  
Egg Yolk ◽  
Cholesterol Levels ◽  
Yolk Cholesterol

Influence of dietary boron supplementation on some serum metabolites and egg-yolk cholesterol in laying hens

2007 ◽  
Vol 55 (1) ◽  
pp. 29-39 ◽  
Author(s):  
M. Eren ◽  
F. Uyanik
Keyword(s):  
Laying Hens ◽  
Egg Yolk ◽  
Gamma Glutamyl Transpeptidase ◽  
Serum Globulin ◽  
Serum Triglycerides ◽  
Cholesterol Levels ◽  
Dietary Boron ◽  
Serum Aspartate Aminotransferase ◽  
Serum Biochemical ◽  
Yolk Cholesterol

The influence of dietary boron (B) supplementation on some serum parameters and egg-yolk cholesterol was studied in laying hens. A total of 224 eighteen-week-old hens of the Hyline Brown 98 strain were assigned to 7 groups with 4 replicates of 8 hens each after 10 days of adaptation, and they were fed commercial diets supplemented with 0, 5, 10, 50, 100, 200 or 400 mg/kg (diet) B (H 3 BO 3 ) for 8 weeks. Serum gamma-glutamyl transpeptidase (GGT) activity, albumin, glucose, total cholesterol, HDL- and LDL-cholesterol levels were decreased with all B levels. Except in the group receiving 5 mg/kg B supplementation, decreases were found in serum triglycerides in all groups. Serum aspartate aminotransferase (AST) activity was decreased in the groups receiving 100 mg/kg or higher levels of B. All levels of B supplementation increased lactate dehydrogenase (LDH) activity at weeks 21 and 22, while 10 mg/kg or higher levels of B increased serum globulin, urea and egg-yolk cholesterol levels. The results demonstrate that B supplementation at levels exceeding 5 mg/kg affects serum biochemical parameters and increases egg-yolk cholesterol in laying hens.

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