scholarly journals The Effect of Pharmacological Levels of Dietary Vanadium on the Egg Production, Shell Thickness and Egg Yolk Cholesterol in Laying Hens and Coturnix

1976 ◽  
Vol 55 (3) ◽  
pp. 923-926 ◽  
Author(s):  
Youssef S.M. Hafez ◽  
F.H. Kratzer
Keyword(s):  
Shell Thickness ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Yolk ◽  
Yolk Cholesterol

scholarly journals The response of laying hens fed fermented pineapple peel waste by indigenous microorganism from bamboo sprout

2020 ◽  
Vol 21 ◽  
Author(s):  
Heryandi YAN ◽  
Yanti Putri NOVA ◽  
Adrizal ADRIZAL ◽  
Endo Mahata MARIA
Keyword(s):  
Shell Thickness ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Indigenous Microorganism ◽  
Pineapple Peel ◽  
Negative Effect ◽  
Egg Shell ◽  
Haugh Unit

ABSTRACT The bromelain enzyme content in pineapple peel waste predicted to promote digestive tract health and a positive effect on egg quality. This research aimed to evaluate the use of fermented pineapple peel waste in laying hens diet on egg quality. A total of laying hens 200 birds with Isa Brown strain, egg production of 70%, The average egg weight and body weight were 58.58 g/egg, and 1.62 g/bird, respectively. A completely randomized design was used, 5 different levels of fermented pineapple peel waste as treatment (0, 5, 10, 15, and 20%), and all treatments were repeated 4 times. Egg shell thickness, egg shell strength, haugh unit, egg yolk fat, and egg yolk color were measured. The use of fermented pineapple peel waste in the diet of laying hens up to 20% highly significant (P<0.01) on egg yolk color, and did not negative effect (P>0.05) on egg shell thickness, egg shell strength, haugh unit, and egg yolk fat. Fermented pineapple peel waste can be used as much as 20% in laying hens diet without disturbing egg quality and improve egg yolk color.

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 Egg quality and coccidiosis infestation in three production systems for laying hens

2021 ◽  
Vol 43 ◽  
pp. e53125
Author(s):  
Reza Vakili ◽  
Ahmad Salahshour ◽  
Ali Zanganeh
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Systems ◽  
Egg Yolk ◽  
Organic Production ◽  
Cholesterol Concentration ◽  
Egg Mass ◽  
Outdoor Area ◽  
Yolk Cholesterol

A total of 240 white Shaver laying hens from 22 to 34 weeks of age were assigned to 3 treatments and 5 replications. The treatments included: i) Conventional (hens were kept in experimental building without access to outdoor area and fed with the conventional diet), ii) Semi-organic (hens were kept in experimental building with access to outdoor area and fed with the organic diet plus amino acids and vitamin-minerals supplement), and iii) Organic (hens were kept in experimental building with access to outdoor and fed with the organic diet). The results showed statistically significant differences in the feed intake, egg production, egg mass, egg weight, and change body weight(g) means among the treatments (p < 0.05). The hens kept in the organic treatment had fecal highest contain of oocytes coccidia (p < 0.05). The yolk color index and shell strength in the organic treatment significantly increased in comparison with that of other treatments (p < 0.05). The highest HDL was in the semi-organic and organic treatments (p < 0.05). The lowest egg yolk cholesterol concentration was found in hens kept in the semi-organic and organic treatments (p < 0.05). It is concluded that organic production system is useful for improving egg quality.

scholarly journals Lycopene Supplementation Either Purified or as in Tomato Powder to the Diet of Laying Hens Lowers Egg Yolk Cholesterol by Modulation of Sterol Transporters

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 123-123
Author(s):  
Cemal Orhan ◽  
Osman Kucuk ◽  
Nurhan Sahin ◽  
Mehmet Tuzcu ◽  
Kazim Sahin
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Cholesterol Metabolism ◽  
Regulatory Element ◽  
Basal Diet ◽  
Egg Yolk ◽  
Gene Expressions ◽  
Development Organization ◽  
Yolk Cholesterol ◽  
Tomato Powder

Abstract Objectives The objective of this work was to investigate the effects of dietary supplementation of purified lycopene (LYC) or a source of LYC as in tomato powder (TP) on live hen performance, egg yolk cholesterol concentrations as well as the gene expressions related to mechanism and regulation of cholesterol, namely Niemann-Pick C1-like 1 protein (NPC1L1), acyl-CoA: cholesterol acyltransferase 2 (ACAT2), microsomal triacylglycerol transport protein (MTP), ATP binding cassette transporters sub-family G member 5 and 8 (ABCG5/8), ATP citrate lyase (ACLY), liver X receptor alpha (LXRα) and sterol regulatory element-binding proteins (SREBP1c). Methods A total of 150 20-week-old white laying hens were divided into one of 3 treatments, with 10 replicates of 5 hens per cage, totaling 50 hens per treatment. The birds were fed either a basal diet (Control) or basal diet supplemented with 20 mg purified lycopene/kg diet (LYC) or an equal amount of lycopene-containing tomato powder (TP) for 12 weeks. Results Feed intake, egg production and feed conversion ratio remained similar among treatments (P ≥ 0.27). However, egg weights from hens fed a diet supplemented with lycopene particularly the purified form were greater (P = 0.036). Supplementing lycopene either purified or as in TP increased the concentrations of serum and egg yolk lycopene but decreased serum and egg yolk cholesterol concentrations (P &lt; 0.001). Supplementing LYC purified or as in TP decreased the gene expression of intestinal NPC1L1, MTP, ACAT2, hepatic SREBP1c, ACLY, and LXRα but increased hepatic ABCG5 and ABCG8 (P &lt; 0.001). The gene expressions were more pronounced with TP supplements compared with that of the LYC supplements. Conclusions The results of the present work revealed that egg yolk cholesterol metabolism is downregulated through decreased activities of intestinal NPC1L1, MTP, ACAT2, hepatic SREBP1c, ACLY, and LXRα but upregulated with increased hepatic activities of ABCG5 and ABCG8. Funding Sources Small and Medium Enterprises Development Organization of Turkey (KOSGEB) Turkish Academy of Sciences.

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 Horsetail (Equisetum arvense) and Spirulina (Spirulina platensis) Dietary Supplementation on Laying Hens Productivity and Oxidative Status

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 335
Author(s):  
Vincenzo Tufarelli ◽  
Payam Baghban-Kanani ◽  
Saba Azimi-Youvalari ◽  
Babak Hosseintabar-Ghasemabad ◽  
Marina Slozhenkina ◽  
...  
Keyword(s):  
Spirulina Platensis ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Oxidative Status ◽  
Physical Parameters ◽  
Equisetum Arvense ◽  
Feed Conversion ◽  
Yolk Cholesterol

The purpose of this study was to examine the effect of dietary horsetail (Equisetum arvense) and spirulina (Spirulina platensis) supplementation on performance, egg quality, serum biochemical and antioxidant status of laying hens. A total of 648, 63-week-old Hy-Line W-36 layers were divided into nine groups with eight replicates per group (nine birds per replicate). A feeding trial was conducted under completely randomized design with factorial arrangement 3 × 3 consisting of three different dietary levels of horsetail supplementations (0, 0.25, and 0.50%, respectively) in combination with three levels of spirulina (0, 1, and 2%, respectively). Results showed that feed intake, egg production, egg weight and mass, and feed conversion ratio were not significantly affected by the dietary treatments. Eggshell thickness, strength, and yolk color were significantly improved in diets supplemented with 0.5% horsetail and 2% spirulina and their interactions. Egg yolk cholesterol was not significantly different among groups; however, a significant reduction was found when fed 2% spirulina. Serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) concentration decreased by supplementing 2% spirulina in diet; also, spirulina increased total superoxide dismutase (TSOD) and total antioxidant capacity (TAC) in laying hens. Overall, the findings indicated that the combination of horsetail and spirulina could have potential for improving the egg’s physical parameters, whereas spirulina was more effective in improving blood traits and oxidative status.

EFFECT OF DIETARY SAPONIN ON EGG CHOLESTEROL LEVEL AND LAYING HEN PERFORMANCE

1984 ◽  
Vol 64 (4) ◽  
pp. 977-984 ◽  
Author(s):  
J. S. SIM ◽  
W. D. KITTS ◽  
D. B. BRAGG
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Corn Oil ◽  
Dietary Cholesterol ◽  
Specific Effect ◽  
Egg Yolk ◽  
Cholesterol Absorption ◽  
Cholesterol Content ◽  
Yolk Cholesterol ◽  
Single Comb

A feeding trial was carried out for five 28-day periods with diets containing 0.0, 0.04, 0.2 and 0.4% of saponin (Sarsaponin) in either the presence or absence of dietary cholesterol to study the saponin-cholesterol interaction and also to determine the effects on the levels of yolk cholesterol and the performance of single-comb White Leghorn laying hens (44 wk of age). No significant differences were found in the levels of egg yolk cholesterol; however, egg production and feed intake were reduced by feeding saponin. These adverse effects on the layer performance were counteracted or completely disappeared when 0.5% cholesterol was fed simultaneously to the laying birds. Egg yolk cholesterol contents were raised by dietary cholesterol but were not influenced by the dietary presence of saponin. In the second trial, layers were given a dose of 14C-cholesterol emulsified in corn oil with and without 0.48 g saponin in order to determine the specific effect of saponin on dietary cholesterol absorption and deposition into egg yolk. Dietary saponin increased the excretion of 14C-cholesterol from 8.6 to 65.8%, decreased egg deposition from 31.5 to 16.6% and decreased serum radioactivity by 39.2%. Thus, it was concluded that dietary saponin reduced cholesterol retention and transfer of dietary cholesterol to egg yolk, but failed to lower cholesterol content in egg yolk. Key words: Saponin, egg cholesterol, 14C-cholesterol, laying hens

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