scholarly journals Effect of diatomaceous earth on parasite load, egg production, and egg quality of free-range organic laying hens

2011 ◽  
Vol 90 (7) ◽  
pp. 1416-1426 ◽  
Author(s):  
D.C. Bennett ◽  
A. Yee ◽  
Y.-J. Rhee ◽  
K.M. Cheng
Keyword(s):  
Egg Production ◽  
Diatomaceous Earth ◽  
Laying Hens ◽  
Egg Quality ◽  
Parasite Load ◽  
Free Range

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.

Effect of Dietary Inclusion of Cassava Yeast as Probiotic Source on Egg Production and Egg Quality of Laying Hens

2009 ◽  
Vol 8 (2) ◽  
pp. 195-199 ◽  
Author(s):  
Songsak Chumpawade ◽  
Anut Chantirati ◽  
Suwannee Sataweesuk
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality

Effect of the frizzle gene (F) on egg production and egg quality of laying hens kept in tropical villages

2014 ◽  
Vol 55 (6) ◽  
pp. 709-714 ◽  
Author(s):  
K. Adomako ◽  
O.S. Olympio ◽  
J.K. Hagan ◽  
J.A. Hamidu
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality

scholarly journals Vegetable pigments in sorghum-based diets for laying hens

2020 ◽  
Vol 12 ◽  
Author(s):  
Donaldo Antônio Nunes Junior ◽  
Heder José D’Avila Lima ◽  
Jean Kaique Valentim ◽  
Laura Aline Zanelatto Souza ◽  
Nayara Emanoelle Matos e Silva ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Energy Sources ◽  
Natural Pigment ◽  
Randomized Design ◽  
Significant Difference ◽  
Egg Yolks ◽  
Completely Randomized Design

The main objective of this research is to evaluate the inclusion of different natural pigment solutions in diets formulated with maize and sorghum solutions on the growth performance and egg quality of commercial laying hens created in hot climates. Throughout the conduction of this experiment, were used 252 laying hens of the Hisex Brow, in a completely randomized design, with six treatments, seven repetitions, and six birds per plot. The experimental diets were assigned with different energy sources and adding pigmentation solutions, diet 1 (corn), diet 2 (corn + annatto), diet 3 (corn + carrot), diet 4 (sorghum), diet 5 (sorghum + annatto), diet 6 (sorghum + Carrot).  Afterward, being evaluated the performance and quality of eggs. It was observed significant difference with reference t egg production, egg weight (g), gem weight (g), the weight of shell (g), albumin in weight (g), and gem coloration (tons) among the treatments. There was no difference in the parameters of performance and quality of eggs evaluated, only the variable yolk color had a significant effect between treatments. Replacing the energy source of the corn diet with sorghum in the diet of laying hens at peak production provides similar performance and egg quality, which can be a substitute for quality and efficiency. The use of annatto and carrots as a natural pigmentation promotes greater pigmentation of the egg yolks of laying Hisex Brown eggs and does not impair the performance of the birds.

scholarly journals Respon Pemberian Tepung Daun Kelor (Moringa oleifera) pada Pakan Ayam Petelur terhadap Penampilan Produksi dan Kualitas Telur

2016 ◽  
Vol 40 (3) ◽  
pp. 197 ◽  
Author(s):  
Edi Wahyu Satria ◽  
Osfar Sjofjan ◽  
Irfan Hadji Djunaidi
Keyword(s):  
Egg Production ◽  
Moringa Oleifera ◽  
Laying Hens ◽  
Egg Quality ◽  
Production Performance ◽  
Leaf Powder ◽  
Materials Used ◽  
Mean Differences ◽  
Range Test

The purpose of this study was to determine the effect of Moringa leaf meal (Moringa oleifera) in feed on production performance and egg quality of laying hens. The materials used 120 laying hens of Isa Brown breed in 38 to 42 weeks age. The method used an experimental trial by Moringa oleifera addition in the basal feed. The experiment were devided into four groups i.e. without Moringa oleifera as control (P0), with Moringa oleifera 0.5% (P1), 1% (P2), 1.5% (P3) and 2% (P4). Variables observed were the appearance of egg production and quality. The data was analyzed by Completely Randomized one way design. The mean differences were calculated by the Duncan Multiple Range Test. The results showed that administration of Moringa leaf powder can increase the production and quality of eggs in laying hens. Addition of 2% Moringa leaf powder in the feed gives the best effect on the appearance and quality of production and egg. This research suggested the addition of 2% Moringa leaf powder was recommended in order to obtain the finest appearance and quality of production.

scholarly journals Productivity and Egg Quality of Two Commercial Layer Hybrids Kept in Free-Range System

2018 ◽  
Vol 6 (10) ◽  
pp. 1444
Author(s):  
Muhittin Tutkun ◽  
Muzaffer Denli ◽  
Ramazan Demirel
Keyword(s):  
Feed Intake ◽  
Feed Efficiency ◽  
Laying Hens ◽  
Egg Quality ◽  
Stocking Density ◽  
Quality Parameters ◽  
Production Performance ◽  
Poultry House ◽  
Free Range

The purpose of this study was to compare the performance and egg quality parameters of two layer hybrids (Lohmann Brown and Atak-S) which were reared in free-range system. The experiment was carried out with a total of 300 laying hens. From 18 to 50 weeks of age Lohmann Brown (LB) and Atak-S (AS) were housed in two groups of 150 hens in a poultry house with a stocking density of 7 hens/m2. The 2 trial groups were formed from 10 repetitions each consisting of 15 hens. At the 20, 30, 40 and 50 weeks of ages, the production performance and egg quality parameters were evaluated. Mean daily feed intake and feed efficiency through the trial were 111.2 g vs 124.3 g, and 2.46 vs 2.58 respectively for LB and AS hybrids (P

scholarly journals Differences in oviposition and egg quality of various genotypes of laying hens

2017 ◽  
Vol 62 (No. 9) ◽  
pp. 377-383 ◽  
Author(s):  
E. Tůmová ◽  
J. Vlčková ◽  
D. Chodová
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Laying Hen ◽  
Sequence Length ◽  
Production Traits ◽  
Egg Weight ◽  
Egg Shell ◽  
Egg Components

The differences in egg production traits in six laying hen genotypes (brown-egg hens Bovans Brown, Bovans Sperwer, ISA Sussex; white-egg hen Dekalb White; laying hens with tinted shells Moravia Barred and Moravia BSL) and the interactions of genotype and oviposition on egg quality were evaluated. The genotype affected the laying rate (P ≤ 0.003), mean sequence length (P ≤ 0.001), and time of oviposition (P ≤ 0.001). The brown-egg genotypes laid eggs approximately 1 h earlier than the white-egg genotypes and approximately 2 h earlier than the tinted-egg genotypes. Egg shell strength was the lowest in tinted-egg genotypes (P ≤ 0.001) and declined with the time of oviposition (P ≤ 0.002). Egg shell percentage (P ≤ 0.011) and thickness (P ≤ 0.011) were affected by the interaction of genotype and oviposition. None of the effects affected egg weight; however, the proportion of egg components was significantly influenced by the interaction of genotype and oviposition. The study confirmed that the differences in the egg production and egg quality of various genotypes are associated with the laying pattern.

Dietary Silymarin (silybum marianum) to Improve The Health Status of Layer Chickens

2021 ◽  
Vol 23 (06) ◽  
pp. 15-26
Author(s):  
Mushtaq Talib Abdulwahid ◽  
◽  
Huda Hameed K. Alabbody ◽  
Hussein Ali Rashid ◽  
◽  
...  
Keyword(s):  
Health Status ◽  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Histopathological Examination ◽  
Harmful Effect ◽  
The Body ◽  
Body Tissues ◽  
Layer Chickens

The study aimed to evaluate silymarin material (SM) in reducing the damage in the body caused by residual aflatoxin as well as to improve the health status and quality of the produced eggs in laying hens which were fed on a contaminated diet with aflatoxin. The experiment was conducted on 120 layer chickens (ISA Brown” strain) aged 240-day were randomly divided into three equal groups (40 hens). The first group was fed a basal diet free of aflatoxin. The 2nd group fed on contaminated diet with aflatoxin (14.6 ppb) while the 3rd group fed on the same diet (in 2nd group) with 0.5% of silymarin/kg feed. Ten hens from each group were slaughtered at the end of the experiment for the histopathological examination to evaluate the harmful effect of aflatoxin in tissues (liver, spleen and intestine) as well as, estimated the production and quality of the produced eggs during experiment study. Abnormal visible symptoms observed on 2nd group include decreased in feed intake and body weight, as well as, in some there was abnormal pigmentation (comb and wattles). The most frequent effects on eggs were poor egg quality as decreased egg production, reduced egg size, thin or rough egg shell. The most common pathological lesions associated with aflatoxin residue in chickens were found in liver, spleen and intestine organs. In advanced cases, these organs become enlarged, swollen and changed colour into yellowish. While in the 3rd group, the macroscopic examination of the same organs was less pronounced and almost invisible. We conclude that silymarin has a significant effect and is highly effective in repairing the damage caused by aflatoxin to the body tissues of laying hens. The production in terms of the quantity and quality of eggs was not affected as well as, improving the health status.

scholarly journals Performance and egg quality of laying hens fed with dietary levels of digestible lysine and threonine

2012 ◽  
Vol 64 (3) ◽  
pp. 743-750 ◽  
Author(s):  
G.O Figueiredo ◽  
A.G Bertechini ◽  
E.J Fassani ◽  
P.B. Rodrigues ◽  
J.Á.G Brito ◽  
...  
Keyword(s):  
Egg Production ◽  
Laying Hens ◽  
Egg Quality ◽  
Experimental Unit ◽  
Egg Mass ◽  
Feed Conversion ◽  
Linear Effect ◽  
Randomized Experimental Design ◽  
Egg Shell

The present study was developed using 864 Hy-Line W36 laying hens (42 to 58 weeks of age) with a randomized experimental design in a 4x3 factorial arrangement, with five replicates and 12 birds per experimental unit and 4 evaluation periods of 28 days each. The digestible lysine levels studied were 0.675%, 0.743%, 0.811% and 0.879%, and the digestible threonine levels were 0.542%, 0.596% and 0.650%. The performance and egg quality was evaluated. There were no significant effects on the egg production, specific gravity, albumen and yolk percentage and total solids in albumen and yolk for birds submitted to the different dietary digestible lysine and threonine levels. There was significant interaction between these amino acids on the egg shell percentage and Haugh unit in fresh eggs. There was a decreasing linear effect on the feed intake with increase of digestible lysine level. Egg weight, egg mass and feed conversion demonstrated a quadratic effect with the increase of the digestible lysine level with the best results in the diets with 0.754, 0.772 and 0.795% of digestible lysine, respectively.

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