scholarly journals Effect of Feeding Achiote Seed on Egg-Yolk Pigmentation

1969 ◽  
Vol 46 (2) ◽  
pp. 91-96
Author(s):  
F. T. Landagora
Keyword(s):  
Drinking Water ◽  
Puerto Rican ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Yolk ◽  
Egg Yolks ◽  
Orange Color ◽  
Effect Of Feeding ◽  
Basal Ration

The yolk-coloring effect of "achiote" seed was investigated. Hens fed a ration supplemented with whole achiote seed laid eggs with deep-colored yolks. The red-orange color that was observed in the egg yolks of the achiote group persisted in both fresh and boiled eggs. Ground achiote seed fed to laying hens did not impart color to the egg yolks when added to the basal ration or when mixed with the drinking water given. The addition of whole achiote seed to the ration fed to laying hens not only colored the egg yolks more deeply, but also increased egg production. Since Puerto Rican consumers prefer eggs with deeper colored yolks this rinding has potential commercial significance.

scholarly journals Extraction of Uronic Acid From Sargassum crassifolium and Its Feeding Effects On The Eggs Production and Quality of Lohmann Chicken Eggs

2020 ◽  
Vol 7 (3) ◽  
pp. 264
Author(s):  
Veybe Gresje Kereh ◽  
Ivonne Maria Untu ◽  
Marie Najoan ◽  
T. Lumi
Keyword(s):  
Drinking Water ◽  
Uronic Acid ◽  
Egg Production ◽  
Pathogenic Bacteria ◽  
Laying Hens ◽  
Brown Seaweed ◽  
Egg Yolk ◽  
Egg Mass ◽  
Chicken Eggs

ABSTRACTThe use of antibiotics in chicken feed is currently banned because it can cause resistance to pathogenic bacteria and cause residues in products. This study aimed to see the effect of drinking water containing uronic acid extracted from Sargassum crassifolium (S. crassifolium) on the physical and chemical quality of Lohmann chicken eggs. One hundred and twenty laying hens were divided into 2 groups: (1) chickens given commercial feed containing antibiotics and (2) feed without additional antibiotics. The chickens were randomly assigned to one of the 5 brown seaweed supplementation treatments in drinking water A1=0.0% S.crassifolium (control); A2=2.5% S.crassifolium; A3=5.0% S.crassifolium; A4=7.5% S.crassifolium; A5=10.0% S.crassifolium. The study used a completely randomized factorial design of 5 treatments, 2 factors, and 3 replications. Each replication consisted of 6 heads of laying hens. There were no differences between treatments on the performance of laying hens (egg production, egg weight, egg mass, feed conversion); physical quality (eggshell, egg yolk, egg white, shell thickness, egg yolk, Haugh unit, egg index) and chemistry (superoxide dismutase production, thiobarbituric acid reactive substances (TBARS) and Lohmann chicken egg cholesterol) but there was a difference in feed intake. The uronic acid extracted from S. crassifolium has not been able to increase the production and quality of Lohmann chicken eggs.Keywords: lohmann chicken, quality of eggs, Sargassum crassifolium, uronic acid

Effects of dietary algal docosahexaenoic acid oil supplementation on fatty acid deposition and gene expression in laying Leghorn hens

2004 ◽  
Vol 142 (6) ◽  
pp. 683-690 ◽  
Author(s):  
C. H. CHENG ◽  
T. F. SHEN ◽  
W. L. CHEN ◽  
S. T. DING
Keyword(s):  
Transcription Factors ◽  
Fatty Acid ◽  
Docosahexaenoic Acid ◽  
Acid Deposition ◽  
Egg Production ◽  
Laying Hens ◽  
Regulatory Element ◽  
Egg Yolk ◽  
Total Fatty Acids ◽  
Egg Yolks

The purpose of the current study was to determine the effects of dietary docosahexaenoic acid (DHA) on fatty acid deposition in egg yolk and various tissues of laying Leghorn hens, and on the expression of hepatic lipogenesis-related transcription factors. There were three treatments with 10 Leghorn hens per treatment. Diets were based on maize-soybean meal (ME: 12 MJ/kg; CP: 171 g/kg; Ca: 34 g/kg) supplemented with 0 (plus 20 g butter/kg), 5 g (plus 15 g butter/kg) or 20 g algal DHA oil/kg. The egg production of the birds was not affected by dietary DHA oil (P>0·05). The DHA content in egg yolks of the laying hens increased significantly (P<0·01) with the dietary supplementation of DHA. The DHA content of the total fatty acids in the egg yolk of laying hens was 4±16, 11±43 and 20±90 g/kg for 0, 5 and 20 g/kg DHA treatments, respectively for the first week, and 6±16, 18±49 and 31±86 g/kg for the second week. Therefore, algal DHA oil can be utilized by laying Leghorn hens to enhance egg yolk DHA content and produce high DHA eggs. The concentrations of triacylglycerol (TG) and cholesterol in plasma of laying Leghorn hens were not affected by dietary DHA treatments (P>0·005). The DHA content in plasma and livers of laying hens was increased with the addition of DHA in the diet (P<0·05). The DHA content in the skeletal muscle of Leghorn hens was also increased with the increase in dietary DHA. The data indicate that dietary DHA oil can be incorporated into plasma, egg yolks and various tissues. The mRNA concentrations of the lipogenesis-related transcription factors, sterol regulatory element binding protein 1 (SREBP1) and SREBP2, in the livers of laying Leghorn hens were not affected by the supplement of algal DHA oil for 2 weeks, suggesting that the expressions of these transcription factors are tightly controlled and not sensitive to DHA treatments in laying hens.

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.

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 PSVIII-2 Antibody yield for polyclonal egg yolk antibody (IgY) production in laying hens

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 252-253
Author(s):  
Cherrie Nolden ◽  
Abbey Grisham ◽  
Dan Schaefer ◽  
Matt Akins ◽  
Mark Cook
Keyword(s):  
Repeated Measures ◽  
Laying Hens ◽  
Egg Yolk ◽  
Interleukin 10 ◽  
Cpg Odn ◽  
Slow Decline ◽  
Egg Yolks ◽  
Egg Yolk Antibody ◽  
To Receive ◽  
Phosphate Buffered Saline

Abstract Antibody production in egg yolks of immunized laying hens is an alternative to conventional mammalian production. Antibody yield peak and duration have not been described for immunoglobulin Y technology using Freund’s incomplete adjuvant (FIA) and C-phosphate-guanosine oligodeoxynucleotides (CpG-ODN) without the inclusion of Freund’s complete adjuvant for enhancing the immune response to an interleukin-10 (IL-10) peptide. This study sought to describe the antibody titer production for an 8 amino acid sequence from the surface of the bovine IL-10 protein (VMPQAENG) as the antigen emulsified with CpG-ODN and FIA in phosphate buffered saline (PBS). 60 hens were assigned to receive the complete vaccine (Peptide), 20 received the vaccine without the IL-10 peptide (Control), and 8 received a PBS injection (Blank). Hens were immunized with 0.25 mL in 4 locations, each breast and each thigh on days 1, 15 and 29. The complete vaccine delivered 0.6 mg IL-10 peptide, 8 µg CpG-ODN, and 0.33 mL FIA per hen on each vaccination day. Eggs were collected regularly until 175 days after the first immunization and the anti IL-10 peptide activities of the yolk were determined by ELISA. Egg titers by treatment were analyzed with a repeated measures ANOVA in SAS. The supplementation of FIA with CpG-ODN produced high titers, of over 100 µg of antibody per mL of yolk (µg Ab/mL yolk), around day 33 through day 76, with a slow decline through day 175 when average titers remained above 40 µg Ab/mL yolk. Peptide egg titers were significantly higher than Blank or Control titers from day 31 though day 175 (P &lt; 0.0001). Titers recovered from Marcq et al. (2015) with similar methods were 1.5 to 7 times lower than these results over the same number of days.

scholarly journals Arthrospira Platensis (Spirulina) Supplementation on Laying Hens’ Performance: Eggs Physical, Chemical, and Sensorial Qualities

Foods ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 386 ◽  
Author(s):  
Omri ◽  
Amraoui ◽  
Tarek ◽  
Lucarini ◽  
Durazzo ◽  
...  
Keyword(s):  
Laying Hens ◽  
Control Diet ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Egg Yolk ◽  
Arthrospira Platensis ◽  
Cholesterol Concentration ◽  
Physical Chemical ◽  
Egg Yolks ◽  
The Impact

The present study evaluated the effects of dietary supplementation of spirulina on laying hens’ performances: Eggs’ physical, chemical, and sensorial qualities. A total of 45 Lohman White hens, 44 weeks of age, were randomized into 3 groups of 15 birds. Hens were given 120 g/d of a basal diet containing 0% (control), 1.5%, and 2.5% of spirulina for 6 weeks. Albumen height and consequently Haugh unit were significantly affected by dietary supplementation of spirulina (p < 0.05) and by weeks on diet (p < 0.05). This supplement did not affect (p > 0.05) egg yolk weight or height. However, spirulina increased egg yolk redness (a*) from 1.33 (C) to 12.67 (D1) and 16.19 (D2) and reduced (p < 0.05) the yellowness (b*) parameter from 62.1(C) to 58.17 (D1) and 55.87 (D2). Egg yolks from hens fed spirulina were darker, more red, and less yellow in color than egg yolks from hens fed the control-diet (p < 0.0001). However, spirulina did not affect (p > 0.05) egg yolks’ total cholesterol concentration. In conclusion, a significant enhancement of egg yolk color was found in response to spirulina supplementation. Further investigations are needed to evaluate the impact of spirulina on egg yolks’ fatty acids profile.

scholarly journals Effects on egg production and quality of supplementing drinking water with calcium and magnesium

2021 ◽  
Vol 51 (4) ◽  
pp. 469-476
Author(s):  
X.J. Yi ◽  
A. Rehman ◽  
R.W. Akhtar ◽  
A. Abbas ◽  
K. Hussain ◽  
...  
Keyword(s):  
Drinking Water ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Egg Weight ◽  
Calcium And Magnesium ◽  
Eggshell Colour ◽  
Haugh Unit

This study was conducted to appraise the effects on egg quality and production performance of laying hens when drinking water was supplemented with calcium (Ca) and magnesium (Mg). A total of 384 (64-week-old) Hy-line Brown laying hens were assigned at random to four treatments, which consisted of CON: unsupplemented drinking water; T1: drinking water + 2 mg/L Ca + 250 mg/L Mg; T2: drinking water + 4 mg/L Ca + 510 mg/L Mg /10 L; and T3: drinking water + 5 mg/L Ca and 760 mg/L Mg. The experiment lasted six weeks. Water intake increased linearly in week 1 with the rising levels of Ca and Mg in the drinking water. Increasing the Ca and Mg levels improved eggshell strength (week 2 (P =0.01), week 5 (P =0.01), and week 6 (P = 0.03), and eggshell thickness (week 6) (P =0.02) and reduced the rate at which eggs were broken (week 4) (P =0.01). The supplemental Ca and Mg did not affect egg production, egg weight, Haugh unit, albumen height, eggshell colour, and yolk colour compared with CON. Nor did they influence the Haugh unit and albumen height after storing for 1, 5, 10 and 15 days. In conclusion, adding Ca and Mg to the drinking water increased the thickness and strength of the eggshells.

scholarly journals Fermentation of Carrot Juice Waste (Daucus carota L) with Probiotics and Utilization in Races of Chicken Layers on Egg Production and Quality

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
Nur Endang Sukarini
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Feed Consumption ◽  
Carrot Juice ◽  
Feed Conversion ◽  
Index Value ◽  
Basal Ration ◽  
Haugh Unit

The aim of this study was to test the use of carrot juice fermentation with probiotics in rations with different levels on the production performance and quality of egg-laying hens. The material used was Lohman Brown strain of laying hens, 27 weeks old with an average initial body weight of 1.69 kg, as many as 45 birds. The research was conducted with experimental methods and used a Complete Design Acal (CRD). The treatment tested was the use of Carrot Extract Fermentation (FLSW) with probiotic SOC in the feed consisting of T1 = 100% basal ration, T2 = basal ration (97.5%) + FLSW (2.5%): T3 = basal ration ( 95%) + FLSW (5%); T4 = basal ration (92.5%) + FLSW (7.5%); T5 = basal ration (90%) + FLSW (10%). The variables observed were production performance (consumption, egg production (HDA / Hen Day Average), egg weight, egg mass, feed conversion and income over feed cost) and egg quality variables (albumin index, yolk index, Haugh Unit (HU), yolk color, albumin pH, yolk pH). The results of the analysis of variance showed that the use of carrot extract fermentation (FLSW) with different levels had a significant effect on feed consumption (Sig.115) and HDA (Sig.063), yolk index value (Sig.087) and yolk color (Sig. 000). , and not significantly different on feed conversion (Sig. 403), albumin index value (Sig. 522), and Haugh Unit (Sig. 259). The conclusion of the research showed that the use of fermented carrot juice waste (FLSW) in the feed of laying hens had an effect on feed consumption, egg production (Hen Day Averag / HDA), yolk index and yolk brightness (yolk color), but had no effect on conversion. feed, Haugh unit and albumin index value. Key words : probiotics, fermentation, carrot juice waste, production performance, egg quality 

Providing laying hens in group-housed enriched cages with access to barley silage reduces aggressive and feather-pecking behaviour

2016 ◽  
Vol 96 (2) ◽  
pp. 161-171 ◽  
Author(s):  
S.G. Johannson ◽  
C. Raginski ◽  
K. Schwean-Lardner ◽  
H.L. Classen
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Free Access ◽  
Feather Pecking ◽  
Nest Boxes ◽  
And Performance ◽  
Barley Silage ◽  
Effect Of Feeding ◽  
Bird Weight

Two trials were conducted to study the effect of feeding barley silage on the behaviour and performance of beak-trimmed laying hens. In each trial, 20 hens and 2 roosters were housed in each of eight group-housed enriched cages, with four cages provided a laying hen diet and four cages additionally given free access to barley silage. Egg production and quality, and hen behaviour were assessed throughout the trials (Trial One 20–30 weeks; Trial Two 19–28 weeks). Data were analysed using Proc Mixed of SAS 9.4 and differences were significant when P ≤ 0.05. Silage-fed hens consumed 41 (13.9 g DM) and 50 (13.5 g DM) grams of silage per hen per day in Trials One and Two, respectively, while consuming less layer diet. Birds fed silage spent less time expressing aggressive and feather-pecking behaviours and in nest boxes, and more time feeding than control birds. Egg production, egg quality, and bird weight were not affected by treatment; yolk colour was darker for the silage treatment. Feathering quality was improved in silage-fed birds compared to control birds. It was concluded that providing hens with access to barley silage can improve welfare indicators without negatively affecting the egg production and egg quality.

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