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

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.

Download Full-text

Effect of time of oviposition on egg quality characteristics in cages and in a litter housing system

Czech Journal of Animal Science ◽

10.17221/4006-cjas ◽

2011 ◽

Vol 50 (No. 3) ◽

pp. 129-134 ◽

Cited By ~ 6

Author(s):

E. Tůmová ◽

T. Ebeid

Keyword(s):

Shell Thickness ◽

Laying Hens ◽

Egg Quality ◽

Early Morning ◽

Quality Characteristics ◽

Housing System ◽

Egg Weight ◽

Housing Systems ◽

Cage System ◽

Eggshell Quality

Two experiments were carried out to investigate the effect of the time of oviposition on egg quality characteristics in two different housing systems (cages vs. litter). ISA brown hens from 20 to 64 weeks of age were housed in battery cages (550 cm2/hen, 19 526 laying hens in the house) and on deep litter (7 hen/m2, 4 652 laying hens in the house). In both houses, eggs were collected daily at three oviposition times 06:00, 10:00 and 14:00 h. Every four weeks, 90 eggs for each house (30 eggs for each oviposition time) were used for egg quality assessment. The results indicated that in cages the highest percentages (P ≤ 0.001) of normal (74.47%), non-standard (0.85%) and cracked (1.80%) eggs were laid in the early morning (06:00 h). On deep litter, however, the highest percentages (P ≤ 0.05) of normal sound eggs were produced at10:00 h (35.43%) and at14:00 h (33.03%). In the cage system, the heaviest eggs (63.01 g) were laid in the early morning (06:00 h) and the highest shell percentage (10.33%) was in eggs laid in the afternoon and also at 10:00 h (10.31%). On the other hand, in the litter housing system, the time of oviposition had no significant effect on egg weight and eggshell quality characteristics except for shell thickness. Morning eggs had greater shell thickness (0.398 mm) than afternoon eggs (0.390 mm). In cages and on litter, statistically significant differences in albumen height, albumen index and Haugh Units were observed between early morning eggs and afternoon eggs and data showed a pattern of relatively higher albumen quality for eggs collected in the afternoon in both systems.

Download Full-text

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

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun201967020407 ◽

2019 ◽

Vol 67 (2) ◽

pp. 407-414 ◽

Cited By ~ 1

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.

Download Full-text

Eggshell characteristics and cuticle deposition in three laying hen genotypes housed in enriched cages and on litter

Czech Journal of Animal Science ◽

10.17221/75/2017-cjas ◽

2017 ◽

Vol 63 (No. 1) ◽

pp. 11-16 ◽

Cited By ~ 4

Author(s):

M. Ketta ◽

E. Tumova

Keyword(s):

Laying Hens ◽

Quality Parameters ◽

Laying Hen ◽

Housing System ◽

Eggshell Thickness ◽

System Effect ◽

Egg Weight ◽

Housing Systems ◽

Eggshell Quality ◽

System P

The objective of the present study was to compare the eggshell characteristics and cuticle deposition of Lohmann Brown, Hy-Line Silver Brown, and Isa Brown layers kept in two different housing systems. The three laying hen genotypes were housed in enriched cages (100 hens, 750 cm2/hen, 10 hens/cage) and in littered pens (100 hens, 9 hens/m2, 10 hens/pen). The experiment was carried out in weeks 40–56 of hens age. Non-significant interactions of genotype and housing system for eggshell quality parameters and cuticle deposition were detected in this study. Egg weight was significantly affected by genotype (P ≤ 0.001) and housing system (P ≤ 0.043). The heaviest eggs were laid by Lohmann Brown, while the lightest eggs were produced by Hy-Line Silver Brown. Eggshell strength was not affected by genotype and housing system, however, genotype had a significant effect on eggshell thickness (P ≤ 0.033). Isa Brown eggs had thicker eggshells compared to Lohmann Brown and Hy-Line Silver Brown. However, a non-significant effect of housing system on eggshell thickness was observed. Eggshell percentage was significantly affected by both genotype and housing system. Genotype of laying hens had a significant effect on cuticle deposition; significantly higher cuticle deposition was observed in Lohmann Brown eggs (P ≤ 0.001). It could be concluded that genotype had a significant effect on eggshell quality parameters and cuticle deposition. However, the housing system effect was less important in these characteristics.

Download Full-text

Performance of Laying Hens Fed Sorghum Based Diets Supplemented with Enzymes

Nigerian Journal of Animal Production ◽

10.51791/njap.v43i1.2763 ◽

2021 ◽

Vol 43 (1) ◽

pp. 224-232

Author(s):

O. M. Agunbiade ◽

P. A. Onimisi ◽

J. J. Omage

Keyword(s):

Egg Production ◽

Laying Hens ◽

Egg Quality ◽

Quality Characteristics ◽

Egg Laying ◽

The Other ◽

Control Treatment ◽

Feed Cost ◽

Laying Performance ◽

Dietary Treatments

Sorghum is the primary alternative feedstuff for corn in some developed countries in the production of poultry. Thus, four hundred and fifty 32 weeks old Lohmann Brown laying hens were used in a study to evaluate the effect of replacing maize with sorghum with or without enzymes supplementation, on egg laying performance and egg quality characteristics of laying hens. Birds were distributed randomly into six dietary treatments with three replicates per treatment, each replicate had 25 birds with uniform initial group weights. The treatments included maize without enzymes (T1); sorghum without enzymes (T2); as controls respectively, while T3, T4, T5, and T6 contained sorghum based diets with phytase, protease, G2G, and a combination of protease and G2G respectively. Laying performance, cost of production, and egg quality characteristics were determined for the period of the trial, 33-56 weeks of age of the birds. All data obtained were subjected to analysis of variance, using the completely randomized design (CRD) and significant differences among treatment means were compared using the Tukey test. Significant (p<0.05) differences were observed among dietary treatments but with no defined trend observed for egg production traits. Daily feed intake was significantly (p<0.05) higher in maize control diet compared to the other treatments. Diets supplemented with phytase (T3), protease (14), and combination of protease and roxazyme G2G (T6) had significantly (p<0.05) better feed conversion ratio with T3 having the lowest value of 4.01 compared to the other treatments. For feed cost/dozen egg (N), Kg feed/dozen eggs, income above feed cost at N30 per egg, and income above control treatment; phytase (T3), protease (T4), roxazyme 626 (T5), and protease + roxacyme G2G (T6) diets in this study showed better performance than the control. Sorghum diet without enzyme had significantly (p<0.05) least performance for egg number. Hen housed egg production (HHP) and hen day egg production (HDP) compared to the other treatments while sorghum diet with phytase had the highest value (60.12g/day) for average egg weight compared to the other treatments. Egg quality characteristics showed the best performance for dietary treatments supplemented with phytase (T3) in all the other parameters considered, apart from the albumen height, yolk diameter, and yolk index. It was concluded therefore, that sorghum with phytase and protease supplementations can be used in layers' diets as a substitute for maize for optimum egg production.

Download Full-text

The Effect of Storage and Age of Hens on the Quality of Table Eggs

Advanced Research in Life Sciences ◽

10.1515/arls-2017-0011 ◽

2017 ◽

Vol 1 (1) ◽

pp. 64-67 ◽

Cited By ~ 2

Author(s):

Lidija Perić ◽

Mirjana Đukić Stojčić ◽

Siniša Bjedov

Keyword(s):

Storage Time ◽

Laying Hens ◽

Egg Quality ◽

Quality Characteristics ◽

Egg Weight ◽

Processing Industry ◽

Significant Negative Effect ◽

Poultry Products ◽

Negative Effect

AbstractQuality of poultry products, especially eggs, is a very important issue for the consumers and for the processing industry. The aim of the present study was to examine the interaction between the storage time and age of laying hens and their effect on the quality of table eggs. Eggs from 34 and 59- wk-old Bovans Brown hens were sampled and stored in the refrigerator for 1, 2, and 3 weeks. Significant effect of hen age (P<0.01) was found on egg weight, shell strength, albumen height and Haugh units (HU). Eggs from older hens had 2.58% higher mass compared to the eggs of young hens. Eggs from 59-weeks old hens had significantly lower shell strength (3.63 kg vs. 4.31 kg). Albumen height and HU were lower in eggs from the older hens compared to the young ones (5.7 mm vs. 7.11 mm for albumen height; 70.35 vs. 81.77 for HU). Significant negative effect of storage time was found on egg weight, albumen height, HU and yolk colour (P<0.01). The results indicated that egg quality characteristics monitored in this study decrease by hen age and during storage. The interaction effects between storage time and age of hens were significant only for yolk colour (P<0.05).

Download Full-text

Relationship between the level and the action period of fiber in diets to laying hens

Acta Scientiarum Animal Sciences ◽

10.4025/actascianimsci.v43i1.49033 ◽

2020 ◽

Vol 43 ◽

pp. e49033

Author(s):

João Paulo Ferreira Rufino ◽

Frank George Guimarães Cruz ◽

Ronner Joaquim Mendonça Brasil ◽

Pedro Alves de Oliveira Filho ◽

Ramon Duque Melo ◽

...

Keyword(s):

Experimental Design ◽

Specific Gravity ◽

Laying Hens ◽

Egg Quality ◽

Eggshell Thickness ◽

Egg Weight ◽

Tukey Test ◽

Negative Effect ◽

The Relationship

The aim of the present study was to evaluate the relationship between the level of fiber and its action period in diets to laying hens on performance and egg quality. 180 Hisex white hens (65 weeks-old) were randomly allocated to 3 groups of 60 birds each, comprising 10 replicates of six birds per treatment. The experimental design was factorial scheme considering three levels of fiber (2.50, 4.87 and 7.24%) in birds’ diets, and three action periods of this fiber (short - 21 days, medium - 56 days, and long - 105 days) in the feed. The estimates of treatments were firstly subjected to ANOVA and a subsequent Tukey test at 5%. Birds fed diets with moderate levels of fiber (4.87%) presented better (p < 0.05) performance. High levels of fiber caused a significant reduction in performance. Birds fed diets with low and moderate levels of fiber produced eggs with better (p < 0.05) quality. High levels of fiber caused a significant reduction in egg quality. The exposure of birds to diets with fiber for long-term caused a negative effect (p < 0.05) on performance, egg weight and percentage of its main structures, albumen height, yolk height, eggshell thickness, and the specific gravity.

Download Full-text

Interaction between housing system and genotype in relation to internal and external egg quality parameters

Czech Journal of Animal Science ◽

10.17221/3838-cjas ◽

2011 ◽

Vol 56 (No. 11) ◽

pp. 490-498 ◽

Cited By ~ 13

Author(s):

E. Tůmová ◽

M. Englmaierová ◽

Z. Ledvinka ◽

V. Charvátová

Keyword(s):

Quality Indicators ◽

Egg Quality ◽

Significant Negative Correlation ◽

Quality Parameters ◽

Housing System ◽

Eggshell Thickness ◽

Pore Density ◽

Egg Weight ◽

Housing Systems ◽

Eggshell Quality

The effect of three housing systems (conventional cages, enriched cages and litter) on egg quality parameters was evaluated in two experiments with four brown laying strains ISA Brown, Hisex Brown, Bovans Brown and Moravia BSL. During 40 weeks of lay the total number of 7200 eggs was produced and analysed for egg weight, egg component weight and eggshell quality indicators. In 60 eggs, pore density in the small-end, large-end and equatorial areas was determined. Significant interactions between genotype and housing were found out in egg weight (P ≤ 0.001), yolk and albumen weight (P ≤ 0.001) and yolk colour (P ≤ 0.001). Haugh units were the highest in eggs laid in cages and the lowest in the ISA Brown strain. Eggshell quality indicators were affected more by genotype than by housing. The interaction between genotype and housing was not significant for eggshell thickness but it was significant for eggshell weight and strength. Although eggshell thickness was lower in eggs produced in cages, eggshell strength was higher. A significant negative correlation was found out between pore density and housing system. Results of the study suggest that the ability of a strain to produce eggs of high quality in a particular housing system should be considered, even within brown strains.

Download Full-text

Effect of agave oligofructose feed on egg production from laying hens

Revista Mvz Córdoba ◽

10.21897/rmvz.1522 ◽

2018 ◽

pp. 7108-7112

Author(s):

Ivónn Yanine Chávez-Mora ◽

David Román Sánchez-Chiprés ◽

Jorge Galindo-García ◽

Miguel Ángel Ayala-Valdovinos ◽

Theodor Duifhuis-Rivera ◽

...

Keyword(s):

Egg Production ◽

Laying Hens ◽

Egg Quality ◽

Egg Laying ◽

Feed Additive ◽

Egg Weight ◽

Feed Supplementation ◽

Treatment Groups ◽

Alternative Feed

Objective. To determine egg production in laying hens treated with oligofructose from agave. Materials and methods. Eighteen weeks old Hy-line W-36 hens (n=300) were distributed randomly into 3 treatment groups: no feed supplementation (control) or feed supplementation with 0.1% of 0.2% oligofructose from agave (OFA). Hens were monitored from development until 30 weeks of egg laying. Results. A significant (p<0.05) increase in the percent of egg-laying hens as well as increased in egg weight and egg quality occurred in hens from the OFA treatment groups relative to the control hens. Significantly lower levels (p<0.05) of fecal putrescine were observed in hens from the OFA treatment groups. Conclusions. The oligofructose from agave may be used as an alternative feed additive in laying hens.

Download Full-text

The effect of genotype, housing system and egg collection time on egg quality in egg type hens

Czech Journal of Animal Science ◽

10.17221/1736-cjas ◽

2009 ◽

Vol 54 (No. 1) ◽

pp. 17-23 ◽

Cited By ~ 7

Author(s):

E. Tůmová ◽

M. Skřivan ◽

M. Englmaierová ◽

L. Zita

Keyword(s):

Laying Hens ◽

Egg Quality ◽

Quality Characteristics ◽

The Other ◽

Housing System ◽

Egg Weight ◽

Collection Time

The effect of egg collection time, genotype and housing system on egg quality characteristics was evaluated in an experiment with laying hens of ISA Brown, Hisex Brown and Moravia housed on litter and in conventional cages. The experiment was conducted from 20 to 64 weeks of age. Eggs were collected and recorded daily at 06:00, 10:00 and 14:00 h. Once every four weeks, two days in row, all eggs laid from each pen or cage at each oviposition time were used for egg quality analyses (total 1 694 eggs). Egg collection time was dependent on genotype. Significantly more eggs were laid at 06:00h by ISA Brown while Moravia laid eggs mainly at 10:00 and 14:00 h. Housing on litter postponed the time of oviposition. The highest egg weight (62.09 g) was recorded in Hisex Brown genotype placed in cages and at 06.00 h. Interactions of all factors were determined also in Haugh units (P ≤ 0.041). Eggshell strength was affected by housing system, genotype and egg collection time (P ≤ 0.049). It was higher in cages than on litter, and lower in the Moravia genotype in comparison with the other two strains.

Download Full-text

PENGGUNAAN TEPUNG LIMBAH LABU KUNING/WALUH (Cucurbita moschata) DALAM PAKAN AYAM PETELUR TERHADAP BERAT TELUR, TEBAL KERABANG, DAN EGG MASS

ZOOTEC ◽

10.35792/zot.36.2.2016.11672 ◽

2016 ◽

Vol 36 (2) ◽

pp. 280

Author(s):

Meilani Pangemanan ◽

M. E.R. Montong ◽

E. S. Tangkere ◽

F. S. Ratulangi

Keyword(s):

Shell Thickness ◽

Laying Hens ◽

Egg Laying ◽

Egg Mass ◽

Cucurbita Moschata ◽

Eggshell Thickness ◽

Egg Weight ◽

Egg Shell

EGG WEIGHT, EGGSHELL THICKNESS AND EGG MASS OF CAGED LAYING HENS GIVEN RATION THAT COMPOSED OF BY SITE PRODUCT OF PUMPKIN FLOUR (Cucurbita moschata) The aim of this research was to find out the effect of using by site product of pumpkin flour (cucurbita moschata) in feed of laying hens on egg weight, eggshell thickness and egg mass. One hundred of laying hens, 42 weeks old were used in this research, and this research was conducted. Randomized completely design was used, 5 treatments and 5 repetitions. The treatments were: R0 = 100% basal feed, without using by site product of pumpkin flour (BSPPF); R1 = 98% basal feed + 2% BSPPF; R2 = 96% + 4% BSPPF; R3 = 94% + 6% BSPPF; R4 = 92% + 8% BSPPF. The result of analysis shown that, there were no any significant differences on egg weight, eggshell thickness and egg mass within the group of laying hens that given feed composed of 2%, 4%, 6%, 8% of by site product of pumpkin flour and given 100% basal feed respectively. The conclusions of this research was pumpkin flour waste up to the level of 8% in the feed of laying hens give the same result on egg weight, egg shell thickness and egg mass. Keywords: by site product of pumpkin, egg, laying hens.

Download Full-text