scholarly journals Consumer criteria for purchasing eggs and the quality of eggs in the markets of the City of Belgrade

2017 ◽  
Vol 33 (4) ◽  
pp. 425-437 ◽  
Author(s):  
Natasa Tolimir ◽  
Marijana Maslovaric ◽  
Zdenka Skrbic ◽  
Milos Lukic ◽  
Borislav Rajkovic ◽  
...  
Keyword(s):  
Shelf Life ◽  
Egg Quality ◽  
Retail Store ◽  
Quality Traits ◽  
Quality Test ◽  
Egg Weight ◽  
Class A ◽  
Egg Shell ◽  
The City

In order to examine the consumers? attitude towards eggs, 239 respondents in the area of the City of Belgrade were surveyed, and the assessment of the quality of eggs on the Belgrade market was done by examining the quality of eggs in super/hypermarkets. In the survey, consumers expressed their views about the place of purchase of eggs, the criteria for purchasing and the significance of certain quality traits/properties. In the egg quality test eggs of class A were used, and it was done on egg samples from 5 super/hypermarkets, from a total of 10 egg manufacturers. Based on the results of the study, it was found that most egg consumers buy in super/hypermarkets (39.62%), that the brand/manufacturer was not important for 30.37% of the respondents, that they prefered to buy larger eggs (SS, S and A classes). The quality of eggs is very important for 73.28% of subjects, and the colour of the yolk prefered by the respondents was extremely yellow (62.76%). The supply of table eggs on the market was different (from 1 to 5 manufacturers) per retail store. The quality of eggs, observed for all super/hypermarkets and all manufacturers, expressed in Haugh units, decreased with the shelf life of eggs. The quality of eggs from category 1 to 10 days, in all super/hypermarkets, observed for all manufacturers, was within the studied class A, with egg weight ranging from 60.9 to 64.1g, egg shell colour from 3.6 to 4.2, egg cleaniness 4.4 to 5.0, the colour of the yolk (Roche) from 10.9 to 13.2, and the number of Haugh units from 73.2 to 91.7. The results of the research indicate that consumers in the City of Belgrade are placing importance on the quality of table eggs, that there are differences in the supply and freshness of the eggs between the markets, and that there are differences in the quality within the same market, regardless of the manufacturer.

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.

scholarly journals The Effect of Genotype and Age of Layer Breeders on Egg Quality Traits

2020 ◽  
Vol 36 (2) ◽  
pp. 228-236
Author(s):  
S. O. Olawumi ◽  
J. T. Ogunlade
Keyword(s):  
Egg Quality ◽  
Shape Index ◽  
Age Effect ◽  
Quality Traits ◽  
Eggshell Thickness ◽  
External Quality ◽  
Egg Weight ◽  
Effect Of Age ◽  
Haugh Unit

The external and internal qualities of 120 eggs (60:60) from Isa Brown (IB) and Bovan Nera (BN) layer breeders were evaluated at 15th and 30th week of their production. The genotypes differed significantly (P<0.09) m external egg quality traits except egg weight and egg length. IB recorded higher values in egg width, eggshell weight, eggshell thickness, shape index and shell ratio than BN, while the reverse trend was for egg length. This implies that IB genotype produced eggs with thicker shells than BN, which invariably will lead to a reduction in the rate of cracks and leakages both on the farm and in the hatchery thereby enhancing better hatchability. The age effect was significant (P<0.05) for all the external egg quality traits. The analysis showed that eggs produced at 30th week were better in terms of external quality traits with the exception of egg shape index. There was positive and significant (P <0.05) interaction effect between genotype and age on eggshell width and shell ratio but not for other traits. As regards internal egg quality traits, the genotypes differed significantly (P<0.05) in all the traits except yolk width, yolk height and albumen weight. IB recorded higher (P<0.05) values in yolk weight, albumen width and yolk ratio than BN, while the latter recorded higher values in albumen height, albumen ratio and haugh unit (HU) than the former The effect of age on internal traits was positive and significant (P<0.05) with the exception f yolk width, albumen width, yolk ratio and albumen ratio. The result showed that the 30th week analyses recorded higher (P<0.05) values in these traits than 15th week. This implies that the quality of breeding eggs improves with the advancing age of the birds. Breed x age interactions were significant for yolk weight and albumen width but not found for other traits. IB genotype was considered the best for external egg quality traits and produced thicker eggshell. However, BN genotype produced superior egg quality than lB having recorded higher values (P< 0.05) in HU, which is a determinant of egg quality

scholarly journals Quality of Laying Hen Eggs During Storage Depending on Egg Weight and Type of Cage System (Conventional vs. Furnished Cages)

2014 ◽  
Vol 14 (3) ◽  
pp. 707-719 ◽  
Author(s):  
Justyna Batkowska ◽  
Antoni Brodacki ◽  
Sebastian Knaga
Keyword(s):  
Storage Time ◽  
Egg Quality ◽  
Housing System ◽  
Weight Class ◽  
Quality Traits ◽  
Egg Weight ◽  
Cage System ◽  
Relationship Of ◽  
The Relationship

AbstractThe aim of the study was to demonstrate the relationship of egg weight and egg quality traits with storage time and type of cages in which the laying hens were kept. The material consisted of 960 eggs from same age Hy-Line Brown hens kept in conventional and furnished cages at the same time in one building. The eggs were randomly collected, sorted by weight (S, M, L and XL), and stored under controlled temperature and humidity conditions. All eggs were weighed on days 1 (day of laying) and 28 of the experiment. During the same time they were candled to determine depth of the air cell, and 60 eggs from each subgroup were chosen to evaluate quality traits (egg weight and egg specific gravity), shell characteristics (shell strength, weight, thickness and density), and interior quality of eggs (albumen height and pH, yolk colour, weight and pH). The eggs (especially those from the heavier weight classes, XL and L) from hens reared in furnished cages were characterized by significantly smaller quality changes (egg weight loss, yolk proportion, albumen height, Haugh units) due to storage time in relation to those from hens kept in conventional cages. This fact could point to their better suitability for consumption. In addition to the housing system, changes occurring in eggs during storage should also be considered in terms of their weight class. Economically important egg traits (e.g. egg weight, shell strength) were better in eggs from furnished compared to conventional cages.

scholarly journals Variability of certain table egg quality traits depending on the producer and investigation year

2006 ◽  
Vol 22 (5-6) ◽  
pp. 21-31
Author(s):  
Zdenka Skrbic ◽  
Z. Pavlovski ◽  
S. Mitrovic ◽  
M. Lukic ◽  
D. Tomasevic
Keyword(s):  
Egg Quality ◽  
Egg Mass ◽  
Quality Traits ◽  
Intensive Production ◽  
Alternative Systems ◽  
Subjective Factor ◽  
Production Cycles ◽  
Egg Shell ◽  
Production Conditions

Interest of consumers in safety and quality of table eggs is increasing. Considering the deficit/lack of eggs from alternative systems, as well as increased production cost and other (zoo-hygienic) problems in these systems, it is necessary to improve egg quality traits in intensive production conditions. In Serbia, numerous mini farmers are main suppliers of table eggs on the market, therefore there is the issue of subjective factor, i.e. producer on the quality of egg. At the same time, objective of the paper was to investigate the changes of the egg quality traits depending on the year of investigation. During three production cycles, on five farms for production of table eggs with Isabrown layers, following quality traits were investigated: egg mass, albumen height, Haugh units, yolk color, egg shell color, cleanliness and thickness. Investigation results indicated significant effect of investigation years, i.e. production cycles on quality of table eggs, based on main flocks of same light layer hen hybrid, as well as quality of feeds used for their nutrition. Also, results indicated the possibility for improvement of egg quality even in conditions of intensive production and that this improvement greatly depends on the awareness of the producer about the importance of the correct realization of production technology.

scholarly journals Bacillus subtilis Probiotics in Chicken Feed Improve Egg Quality with Differences in Shelf Life

2021 ◽  
Vol 4 (1) ◽  
pp. 8
Author(s):  
Nurul Ika Wardiana ◽  
Widya Paramita Lokapirnasari ◽  
Nenny Harijani ◽  
Mohammad Anam Al-Arif ◽  
Ardianto Ardianto
Keyword(s):  
Bacillus Subtilis ◽  
Shelf Life ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Yolk ◽  
Not Given ◽  
Egg Weight ◽  
Treatment Groups ◽  
Index Value

This study aims to examine the effect of giving Bacillus subtilis probiotics in laying hens on improving the quality of internal and external eggs with differences in shelf life. A total of 60 laying hens were divided into 4 treatment groups, namely P0 as a control that was not given probiotic B. Subtilis, P1 feed was added 0.005 grams B. Subtilis, P2 feed with added 0.01 grams B. Subtilis, P3 feed added 0.02 grams B. Subtilis then the eggs produced are stored for 1 day, 5 days and 10 days. The results of this study indicate that the administration of B. Subtilis probiotics with a concentration of 0.02 grams affects the increase in egg weight, egg yolk index value and HU values. The addition of B. Subtilis probiotics to racial feed can improve egg quality.

scholarly journals The effects of humic acid on egg production and egg traits of laying hen 

2012 ◽  
Vol 50 (No. 9) ◽  
pp. 406-410 ◽  
Author(s):  
S. Kucukersan ◽  
K. Kucukersan ◽  
I. Colpan ◽  
E. Goncuoglu ◽  
Z. Reisli ◽  
...  
Keyword(s):  
Humic Acid ◽  
Feed Efficiency ◽  
Egg Production ◽  
Egg Quality ◽  
Experimental Period ◽  
Feed Consumption ◽  
Egg Weight ◽  
Egg Shell ◽  
Haugh Unit

The effects of humic acid on feed consumption, egg production, feed efficiency, egg weight and external and internal egg quality of laying hens were studied during feeding periods. A total of 180 (Hysex Brown) layers (36 weeks of age) were used in this experiment. There was one control and two experimental groups, each containing 60 hens and 4 subgroups. The experimental period lasted 16 weeks. At the end of the experiment, the supplementation of humic acid had a significant effect on feed consumption and feed efficiency. An increase in egg production was determined when humic acid was added to the diets at 30 g/t of feeds (91.70%) and 60 g/t of feeds (91.32%). There were no significant differences between the groups in egg shell thickness, egg shell breaking strength, yolk index, albumen index and Haugh unit. It can be therefore concluded that the dietary supplementation of humic acid at doses of 30 and 60 g/t feed can be used to improve egg production, egg weight and feed efficiency.

scholarly journals PENAMBAHAN RIMPANG KUNYIT (CURCUMA DOMESTICA VAL.), TEMULAWAK (CURCUMA XANTHORRHIZA ROXB.), DAN TEMU PUTIH (CURCUMA ZEDOARIA ROSC.) DALAM RANSUM KOMERSIL TERHADAP KUALITAS TELUR BURUNG PUYUH (Coturnix-coturnix japonica)

ZOOTEC ◽  
2014 ◽  
Vol 34 (1) ◽  
pp. 103 ◽  
Author(s):  
Claudia Rondonuwu ◽  
J L.P Saerang ◽  
F J Nangoy ◽  
S Laatung
Keyword(s):  
Shell Thickness ◽  
Control Diet ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Curcuma Zedoaria ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Curcuma Xanthorrhiza ◽  
Egg Shell

ABSTRACTADDITION TURMERIC GINGER, RHIZOME AND WHITE RHIZOME OF COMMERCIAL RATION TO EGGS’ QUALITY OF QUAILS.This study aims to determine the quality of quail eggs after added 2% turmeric (Curcuma domestica Val.), ginger (Curcuma xanthorrhiza Roxb.), and ginger and white (Curcuma zedoaria Rosc.) in the commercial ration. Animals used are of the type Coturnix-coturnix japonica quail females aged 6 weeks a total of 120 birds. Research using completely randomized design (CRD) with 4 treatments and 5 replications, and each replication consisted of 6 tail quail. Treatment is given as follows: R0 = control diet; R1= ration with 2% turmeric (Curcuma domestica Val.), R2 = 2% ration with ginger (Curcuma xanthorrhiza Roxb.), R3 = 2% ration with ginger and white (Curcuma zedoaria Rosc.). results of the study showed that the addition of 2% turmeric (Curcuma domestica Val.), ginger (Curcuma xanthorrhiza Roxb.), ginger and white (Curcuma zedoaria Rosc.) and not significantly different effect on egg weight, yolk color and egg shell thickness. And based on the results of this study concluded that the addition of 2% turmeric, ginger, ginger and white and can not increase egg weight, yolkcolor and egg shell thickness when added to a commercial ration.Keyword : Ration, Turmeric, Ginger, Ginger and White, Quail Eggs.

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 The influence of strain and age on some egg quality parameters of commercial laying hens

2011 ◽  
Vol 27 (4) ◽  
pp. 1649-1658 ◽  
Author(s):  
D. Kocevski ◽  
N. Nikolova ◽  
A. Kuzelov
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Quality Parameters ◽  
Older Age ◽  
White Line ◽  
Egg Weight ◽  
Statistical Significant Difference ◽  
Significant Difference ◽  
Breeding Technology ◽  
Egg Shell

The experiment was conducted to evaluate the influence of strain and age on some egg quality parameters (egg weight and egg shell strength) of commercial laying hens. Layers of lines ISA Brown and DeKalb White were examined in period of nine months. Both lines were at same age (28 weeks) and were confined in common facility in battery cages. Laying hens were reared and fed according to standard breeding technology. Once a month 25 eggs of each line were taken to be examined for eggshell strength and egg weight, or in other words, total 450 table eggs were tested. Analises were done in Laboratory for testing egg quality by gaudges Egg Multi Tester EMT 5200 and Egg shell Gauge (Robotmation Co. Ltd., Tokyo, Japan) which have computerised equipment to examine quality and physical characteristics of eggs. Statistic analyses on results were done by computer sub-programme ANOVA and Fisher's LSD test to determine the level of statistical significant difference between examined factors. Egg weight was under significant impact of age (P ? 0,05), but not under the influence of strain, although eggs of ISA Brown line were insignificantly heavier than eggs of DeKalb White line. Eggs were heaviest at layers with older age, while they were lightest at younger birds. The results have shown significant differences (P ? 0,05) in eggshell strength compared to line influence (genotype) and months of age. Eggs from ISA Brown laying hens had much better and eggshell strength than those eggs from DeKalb White. Correlations between eggshell strength and egg weight were with significant (R < 0,05) negative value, which indicating that with increasing egg weight decreases of eggshell strength.

scholarly journals Effects of a short laying rest on postrest egg production and egg quality

1993 ◽  
Vol 2 (5) ◽  
pp. 437-445
Author(s):  
Tuomo Kiiskinen ◽  
Hilkka Hakatie
Keyword(s):  
Mass Production ◽  
Feed Efficiency ◽  
Egg Production ◽  
Egg Quality ◽  
Live Weight ◽  
Egg Mass ◽  
Whole Grain ◽  
Egg Weight ◽  
Egg Shell ◽  
Production Period

Two factorial trials, each including three commercial laying hybrids, were conducted to study the effects of a short laying rest on postrest performance of hens and on egg quality. A total of 1800 hens laying at 65% on an average (70 wks of age) were subjected to one of the following treatments: no rest (control, C) or feeding only whole-grain barley (WB) or fasting (F, Trial 1 only) until the rate oflay dropped to 0%, after which the birds were returned to the previous all-mash diet. The second laying period was six months. Egg production of the WB and F hens ceased within one week on an average and the birds were out of production for 10 days. Laying intensity during the second production period did not differ significantly between the treatments in each trial, but egg weight and daily egg mass production increased as a result of the rest treatments. The laying rest procedures reduced feed intake, improved feed efficiency and increased live weight significantly. Egg shell and albumen quality traits were significantly better in the laying rest groups than in the controls. Significant differences in performance and egg quality between the hybrids were mainly ascertained in Trial 2. The results suggest that a short laying rest is a feasible means of improving egg quality towards the end of the laying period. It can be accomplished successfully by feeding whole-grain barley.

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