scholarly journals The Effect of Age and Genotype on Quality of Eggs in Brown Egg‑Laying Hybrids

2019 ◽  
Vol 67 (2) ◽  
pp. 407-414 ◽  
Author(s):  
Adam Kraus ◽  
Lukáš Zita
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Shape Index ◽  
Egg Laying ◽  
Average Weight ◽  
Eggshell Thickness ◽  
External Quality ◽  
Technological Value ◽  
Effect Of Age

The aim was to assess the internal and external quality of consumer eggs of egg‑laying hens of two selected genotypes depending on their age. All of these hens were kept in enriched cages. There were compared eggs from Hy‑Line Brown and ISA Brown hens at the age from 36 to 64 weeks. In total, 3840 eggs from 300 hens were evaluated. Quality of eggs was determined by their technological value. Statistically significant interactions (P = 0.001) between age and genotype were found in all evaluated parameters except for the yolk colour (P = 0.044), whereas there was not found interaction (P = 0.072) between age and genotype in eggshell strength. The significant effect of hens’ age was found in all evaluated parameters, with the only exception of the yolk colour. The results showed that the average weight of eggs, eggshell, albumen and yolk increased with the age. Also the eggshell proportion, its colour and yolk index values ​​increased, whereas the egg shape index, eggshell thickness and strength, albumen proportion, Haugh units, the albumen and the yolk index decreased. Statistically significant effect of the genotype was found in all evaluated parameters except for the yolk index. When comparing both genotypes, the eggs from ISA Brown hens had a better quality. The trend of deteriorating egg quality with age was confirmed.

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 Beyaz Yumurtacı Saf Hatlarda Yumurta Kalitesi Üzerine Yaş ve Kafes Katının Etkisi

2019 ◽  
Vol 7 (sp1) ◽  
pp. 173
Author(s):  
Hasan Eleroğlu
Keyword(s):  
Laying Hens ◽  
White Layer ◽  
Pure Line ◽  
Shape Index ◽  
External Quality ◽  
Egg Weight ◽  
Temperature And Humidity ◽  
Effect Of Age ◽  
Haugh Unit

In this study, the effects of coat difference and breeding age on the internal and external quality of the eggs were investigated in white laying hens in different cages. The eggs obtained from a total of one hundred fifty eggs White layer pure line hens at 24, 28, 32, 36 and 40 weeks of age that housing in individual cages in the Ankara Poultry Research Institute were used. Shape Index, egg weight (g), albumen height (mm), Roche scale, Haugh unit and shell strength (N) values were examined in 438 eggs obtained from these chickens found in these cages which are three tiers as upper, middle and bottom. In addition, temperature and humidity values in the tiers were recorded at 30-minute intervals during the study and then they were analysed. Statistically significant differences were calculated between temperature and humidity values measured in tiers. Although there was no difference between the tiers in terms of shape index and egg weight, the effect of age was significant. The effect of age and tiers difference on albumen height (mm) was insignificant. The Roche scale and shell strength (N) values were significantly influenced by the tier difference and breeding age. In general, it was concluded that the effect of the tier difference on the Haugh unit was insignificant, but the age was found to have an effect on the Haugh unit.

scholarly journals Long-term effects of choline on productive performance and egg quality of brown-egg laying hens

2013 ◽  
Vol 92 (7) ◽  
pp. 1824-1829 ◽  
Author(s):  
Q.H. Zhai ◽  
X.F. Dong ◽  
J.M. Tong ◽  
Y.M. Guo ◽  
Y.E. Bao
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Egg Laying ◽  
Productive Performance ◽  
Long Term Effects

scholarly journals Effects of energy concentration of the diet on productive performance and egg quality of brown egg-laying hens differing in initial body weight

2012 ◽  
Vol 91 (12) ◽  
pp. 3156-3166 ◽  
Author(s):  
A. Pérez-Bonilla ◽  
S. Novoa ◽  
J. García ◽  
M. Mohiti-Asli ◽  
M. Frikha ◽  
...  
Keyword(s):  
Body Weight ◽  
Laying Hens ◽  
Egg Quality ◽  
Egg Laying ◽  
Energy Concentration ◽  
Productive Performance ◽  
Initial Body Weight

scholarly journals Albumen Quality of Fresh and Stored Table Eggs: Hen Genotype as a Further Chance for Consumer Choice

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 135
Author(s):  
Chiara Rizzi
Keyword(s):  
Environmental Conditions ◽  
Consumer Choice ◽  
Storage Time ◽  
Egg Quality ◽  
Shape Index ◽  
Egg Mass ◽  
Eggshell Thickness ◽  
Dual Purpose ◽  
Commercial Feed

The quality of fresh (1 d) and stored (7–14–21 d, 21 °C) eggs was studied in Italian dual-purpose breeds (Ermellinata di Rovigo (ER), Robusta maculata (RM)) and hybrids (Hy-Line Brown (HB), Hy-Line White36 (HW)), reared outdoors (4 m2/bird) and fed commercial feed. The eggs were analyzed at 4 ages, throughout different seasonal environmental conditions, from summer (31, 35 weeks; 25 °C) until autumn (39, 43 weeks, 15 °C). Each genotype showed significant (p < 0.01) changes in egg quality. In 1 d eggs, the eggshell thickness changed in RM and HW (quadratic), decreased linearly in ER; Haugh Units (HU) changed (ER–cubic) and decreased (hybrids-linear). In 7 d and 14 d eggs, HU linearly (p < 0.01) decreased, except in RM. In 21 d eggs, HU (ER linear decrease; HB, HW quadratic) changed. Significant negative correlations between albumen pH and height were seen in ER (at 1 d, 14 d, 21 d) and HW (at each storage time) eggs, and in RM and HB only in 1 d eggs. RM showed a quite stable albumen quality and a lower total egg mass than ER which showed a more variable albumen quality, due also to a lower eggshell thickness and shape index. The hybrids produced a higher total egg mass than the purebreds and showed an intermediate variation of the egg quality, with an albumen quality higher than those of ER and RM only in 1 d egg, as a result of a higher albumen weight.

scholarly journals Effect of asam kandis (Garcinia cowa Roxb) extract in drinking water on egg quality of Japanese quail (Coturnix coturnix japonica)

2021 ◽  
Vol 6 (1) ◽  
pp. 19-22
Author(s):  
Arif Darmawan ◽  
Widya Hermana ◽  
Muhamad Prastyo Dirgantara
Keyword(s):  
Drinking Water ◽  
Egg Quality ◽  
Shape Index ◽  
Eggshell Thickness ◽  
Egg Weight ◽  
Multiple Test ◽  
Egg Shape ◽  
Garcinia Cowa ◽  
Haugh Unit

Asam kandis  (Garcinia  cowa  Roxb)  fruit has been reported to contain phytochemicals such as xanthon, hydroxy cytric acid and flavonoids that have various activities such as antimicrobial and antioxidant. This study was aimed  to investigate the effect of asam kandis extract addition in drinking water on the quality of quail eggs. Ninety nine laying quails of 59  days of age were divided into 3 treatments and 3 replications with 11 laying quails in each replication. Completely Randomized Design was used and the treatments were: T1= control  (drinking water without asam  kandis extract), T2= drinking water with asam kandis extract at pH 4, T3= drinking water with asam kandis extract at pH 3. The parameters observed were egg weight, egg shape index, yolk color, yolk percentage, albumen percentage, eggshell percentage,  shell thickness, and haugh unit score. The data obtained were analyzed by Analysis of Variance (ANOVA) and significant  differences among treatments means were tested  by Duncans multiple test. The  the addition of asam kandis extract did not affect (P0.05) on egg weight, egg shape index, yolk color, yolk percentage, albumen percentage, eggshell percentage, and haugh unit score. The addition of asam kandis extract in drinking water at pH 3 significantly (P0.05) increased eggshell thickness compare to that of other treatments. The conclusion was the addition of asam kandis extract in drinking water at pH 3 increased eggshell thickness without decreasing egg quality.

scholarly journals Phenotype variability of external quality traits of fertile eggs of partridge Italian bread in semi extensive breeding system

2013 ◽  
Vol 29 (3) ◽  
pp. 477-482
Author(s):  
V. Djermanovic ◽  
S. Mitrovic
Keyword(s):  
Breeding System ◽  
Egg Quality ◽  
Reproductive Traits ◽  
Shape Index ◽  
Quality Traits ◽  
External Quality ◽  
Extensive System ◽  
Length Width ◽  
Research Show

In this paper results of research of external quality traits of the fertile eggs of Partridge Italian bread in semi extensive system are shown. Research was conducted on sample of 64 eggs, divided in to two groups according to the weight. First group was eggs weighing up to the 60 g (? 60 g) and second group eggs weighing above 60 g (> 60 g). Aim of the research was to determine influence of the weight of the eggs to the external quality traits of fertile eggs, such as weight, length, width and shape index of the eggs in quoted breeding system. Obtained result points to the fact that Partridge Italian in semi extensive system achieves satisfying results in regard of the basic external characteristics of egg quality. Results of the conducted research show that it is needed to give higher attention to the quality of eggs used for planting, to the breeding direction, improvement of the productive and reproductive traits, and therefore to preservation of the genetic potential of different breeds and strains of chicken.

scholarly journals PENGARUH PERENDAMAN TELUR MENGGUNAKAN LARUTAN DAUN KELOR TERHADAP KUALITAS INTERNAL TELUR AYAM RAS

2017 ◽  
Vol 5 (1) ◽  
pp. 1 ◽  
Author(s):  
Riawan Riawan ◽  
Riyanti Riyanti ◽  
Khaira Nova
Keyword(s):  
Laying Hens ◽  
Animal Husbandry ◽  
Egg Laying ◽  
Average Weight ◽  
Egg Weight ◽  
Trust Level ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Haugh Unit

The purpose of this research was to find out interior quality of egg laying hens which immersion with moringa leaf solution and to find out the best moringa leaf solution.  This research carried out on August 14--September 13, 2016 housed in the Laboratory Animal Production and Reproduction, Department of Animal Husbandry, Faculty of Agriculture, University of Lampung.  The material of research used 72 eggs laying hens strain isa brown from layer of 60 weeks old with the average weight 63,0±1,51 gram and coefficient of variation 2,40%.  This research used a Completely Randomized Design with 4 treatments and 6 repetition.  The treatments of research consists of immersion egg used moringa leaf solution 0% (w/v), 10% (w/v), 20% (w/v), and 30% (w/v).  Analyzed data observation used variance with 5% trust level and continued with Least Significant Different test.  The result showed that immersion egg with moringa leaf solution significant effect (P<0,05) increase albumin index and the haugh unit, and not significant effect (P>0,05) to yolk index and percentage egg weight lo.  Concentration 30% of immersion moringa leaf solution to give the best treatment to interior quality of egg laying hens.                                 Keywords :  Albumin Index Moringa Leaf, Percentage Egg Weight Lost, Yolk Index, Haugh Unit.

scholarly journals Effects of Genotype, Age and Their Interaction on Egg Quality in Brown-Egg Laying Hens

2009 ◽  
Vol 78 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Lukáš Zita ◽  
Eva Tůmová ◽  
Ladislav Štolc
Keyword(s):  
Laying Hens ◽  
Egg Quality ◽  
Quality Characteristics ◽  
Egg Laying ◽  
Eggshell Thickness ◽  
Egg Weight ◽  
Eggshell Quality ◽  
Ad Libitum ◽  
Quality Measurements

The experiment compared the effects of strain and age on egg quality characteristics in ISA Brown, Hisex Brown and Moravia BSL brown-egg laying hens. One hundred and eight ISA Brown hens, forty-five Hisex Brown and forty-five Moravia BSL 20 to 60 weeks old were housed in conventional cages (550 cm2 per hen). Feed and water were available ad libitum. Eggs were sampled at 21-day intervals, every collecting week 150 eggs per genotype in three age periods, from 20 to 26 weeks, 37 to 43 weeks and 54 to 60 weeks of age. A total of 4,050 eggs were examined. Egg quality characteristics were affected by genotype and age. Egg weight, yolk weight and percentage, Haugh Units increased with the hens’ age in all genotypes, but albumen and eggshell percentage decreased, eggshell thickness and strength improved with age. The highest egg weight (65.3 g) and yolk quality (yolk index 45.1%) were found in Moravia BSL at the end of the experiment. In contrast, the best albumen quality (albumen percentage 60.0) values were in Hisex Brown and the eggshell quality measurements (eggshell thickness 0.38 mm) were higher in ISA Brown.

scholarly journals Comparison of Basic Internal and External Egg Quality Traits of Brown and White Egg-laying Hens in Relationship to their Age

2020 ◽  
Vol 68 (1) ◽  
pp. 49-56
Author(s):  
Adam Kraus ◽  
Lukáš Zita ◽  
Ondřej Krunt ◽  
Zdeněk Volek ◽  
Milan Tyller ◽  
...  
Keyword(s):  
Egg Quality ◽  
Shape Index ◽  
Egg Laying ◽  
Quality Traits ◽  
Egg Weight ◽  
Technological Value ◽  
Basic Quality ◽  
Positive Correlations ◽  
Egg Components ◽  
The Impact

This study was focused on the comparison of the brown and white eggs from two laying hybrids. The objective was to assess basic quality traits of eggs from both groups of hens and compare them. The impact of how age influences the technological value of eggs was also observed. The most important correlations were calculated. Products of Czech original genetic programmes, Dominant Brown D 102 and Dominant Leghorn D 229 hens were included. A total of 1500 eggs were analysed. The egg collection was made for three consecutive days when the hens were at the 28, 35 and 59 weeks of age. The results showed that eggshell weight, yolk weight and yolk share increased with the age, while egg shape index, yolk index and albumen share decreased in both hybrids. Eggshell weight and share fluctuated with the age in both hybrids. Other traits differed within the hybrids. Interactions between age and hybrid were non-significant (P > 0.05) only in eggshell and yolk weight. The heaviest eggs were from 59-week-old Dominant Brown D 102 hens (68.89 g) and the lightest eggs were from 28-week-old Dominant Leghorn D 229 hens (57.76 g). Highly significant (P ≤ 0.001) positive correlations were found between egg weight and all individual egg components weights and between eggshell weight and yolk and albumen weight and eggshell thickness in both laying hybrids.

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