scholarly journals Certain egg quality parameters of gray guinea fowl in extensive rearing

2018 ◽  
Vol 34 (2) ◽  
pp. 207-215
Author(s):  
Marinko Vekic ◽  
Stoja Jotanovic ◽  
Djordje Savic
Keyword(s):  
Shell Thickness ◽  
Egg Quality ◽  
Shape Index ◽  
Quality Parameters ◽  
Guinea Fowl ◽  
Phenotypic Correlation ◽  
Shell Weight ◽  
Egg Weight ◽  
Good Potential

This paper presents results of determination of certain quality parameters and its phenotypic correlation in eggs originated from extensively reared gray variety of Guinea fowl. A total of 150 egg collected by sampling 30 eggs in each of five analyzed laying months were used for egg quality evaluation and statistical analysis by methods of descriptive statistics and simple linear correlation. Average egg weight, shape index and shell thickness was 38.14 g, 76.03% and 0.49 mm, respectively. Average shell, yolk and albumen weight was 5.83, 12.16 and 20.23 g, respectively, and its proportion was 15.23, 32.10 and 52.69%, respectively. Average values of yolk height, diameter, index and color were 16.54 mm, 39.95 mm, 41.50%, and 13.76, whereas values for albumen diameter, index and height as well Haugh units were 59.30 mm, 9.62%, 5.67 mm, and 82.58, respectively. Majority of examined quality parameters showed significant correlation with other parameters. Egg weight was positive correlated (p<0.01) with egg length (0.76) and width (0.92), shape index (0.22), shell thickness (0.60), shell weight (0.81) and proportion (0.44), albumen (0.92) and yolk weight (0.77) and yolk index (0.23), but in negative connection (p<0.01) with yolk proportion (-0.54), yolk/albumen ratio (-0.41) and albumen index (-0.25). Determined egg quality indicated good potential of this species in extensive rearing, which could be improved and used in more favorable rearing conditions.

scholarly journals Quality of eggs from pasture rearing layers of different genotypes

2020 ◽  
Vol 36 (2) ◽  
pp. 181-190
Author(s):  
Zdenka Skrbic ◽  
Milos Lukic ◽  
Veselin Petricevic ◽  
Snezana Bogosavljevic-Boskovic ◽  
Simeon Rakonjac ◽  
...  
Keyword(s):  
Shell Thickness ◽  
Egg Quality ◽  
Egg Yolk ◽  
Vegetation Period ◽  
Shape Index ◽  
Quality Parameters ◽  
Egg Weight ◽  
Naked Neck ◽  
Quality Properties ◽  
Shell Quality

The comparison of physical quality properties of table eggs of commercial hybrid Tetra SL and two native indigenous breeds of hens, Banat Naked Neck and Svrljig hen, was performed in conditions of alternative production in the pasture system in portable cages without the floor. The experiment was conducted during the vegetation period, at the age of hens of 53-57 weeks. In order to produce good quality eggs, the diet was designed with a complete mixture based on maize and soybean. In addition, constant availability of pastures was ensured. Egg sampling was performed in the morning and the initial egg quality was examined based on egg weight, shape index, egg white, egg yolk and shell quality parameters. Layer hens of the commercial hybrid Tetra SL had significantly higher egg weight and better internal egg quality (p<0.01) compared to hens of Banat Naked Neck and Svrljig hens, except for the colour of the yolk, which was more intense in the same feeding and breeding conditions and the age of laying hens, in eggs of native breeds (p<0.01). Native breeds in relation to the commercial hybrid had lighter shell colour (p<0.01). Deformation and egg shell thickness differed (p<0.01) between all three genotypes. The determined rank of layer hen genotypes for shell thickness was: Tetra SL, Banat Naked Neck, Svrljig hen. However, the breaking force was without statistically confirmed difference between hen genotypes.

scholarly journals Egg quality in different lines of New Hampshire and Giriraja chicken

2021 ◽  
Vol 49 (2) ◽  
pp. 108-118
Author(s):  
N Baskota ◽  
M Sharma ◽  
N Bhattrai ◽  
D Neupane ◽  
RK Yadav ◽  
...  
Keyword(s):  
New Hampshire ◽  
Significant Variation ◽  
Shell Thickness ◽  
Egg Quality ◽  
Shape Index ◽  
Quality Parameters ◽  
Quality Parameter ◽  
Egg Weight ◽  
Egg Diameter ◽  
Better Than

This study was undertaken to evaluate the egg quality parameters of New Hampshire and Giriraja by maintaining four different flocks (lines) of New Hampshire viz. NH-Khajura, NH-Parwanipur, NH-Khumaltar and NH-Pokhara and three different flocks (lines) of Giriraja viz. GR-Pakhribas, GR-Khumaltar and GR-Tarhara. The 40-60 weeks of hatchability, fertility, external and internal egg quality parameters were studied and recorded. A total of 200 birds (40 weeks of age) of each New Hampshire and Giriraja from each line were maintained on deep litter system. Results from this study indicated the significant effect of genotype and respective lines on fertility and hatchability of eggs. Significant (P<0.05) variation in fertility and no significant variation in hatchability for genotypes were found. However, in terms of fertility and hatchability, there were significant variations in different lines. In case of egg weight:  no significant (P<0.01) variation was obtained for genotype but lines comparison showed significant variation. Other external egg quality parameters like egg length, egg diameter, shape index, shell thickness were examined for evaluating the genotype and line effect. In all these external egg quality parameters, there were significant (P<0.01) effect of both genotype and lines of birds. For internal egg qualities, yolk weight (g), yolk index, albumen weight and albumen index were checked. Genotype had no significant (P<0.01) effect but lines had significant (P<0.01) effect on yolk weight. In case of yolk index, both genotype and lines of bird had no significant effect. For albumen weight and albumen index, genotype of birds had no significant (P<0.01) effect but lines of bird had significant (P<0.01) effect on both parameters. The study showed that the egg quality parameters of NH (Khajura) were better than that of GR. Among different lines New Hampshire (Khajura) showed better performance in terms of egg quality parameter. Bang. J. Anim. Sci. 2020. 49 (2): 108-118

scholarly journals Effect of Production System and Age on Egg Quality Parameters: A Case of Niğde Province Çamardı District, Turkey

2021 ◽  
Vol 9 (8) ◽  
pp. 1407-1412
Author(s):  
Emine Polat Yurtseven ◽  
Ahmet Şekeroğlu ◽  
Brian Tainika ◽  
Mustafa Duman ◽  
Yunus Emre Şentürk
Keyword(s):  
Production System ◽  
Shell Thickness ◽  
Egg Quality ◽  
Breaking Strength ◽  
Shape Index ◽  
Quality Parameters ◽  
Egg Weight ◽  
Free Range ◽  
Thickness Shell ◽  
Haugh Unit

This study compared egg quality parameters in layers under free-range system with prefabricated pens and backyard while emphasizing hen age. A total of 300 eggs collected from prefabricated pens and backyard farming families in the Çamardı District of Niğde Province were used as study materials. The assessed external and internal egg quality characteristics included egg weight, shape index, shell thickness, shell breaking strength, albumen index, Haugh unit, yolk index, and yolk colour. The effect of production system on albumen index, Haugh unit, and yolk colour score was found statistically significant. There was a significant effect of age on shape index, shell thickness, shell breaking strength, albumen index, Haugh Unit, yolk index, and yolk colour score. The effect of interaction between age and production system was statistically significant for shape index, shell thickness, yolk index, Haugh Unit, and yolk colour score. It was determined that the egg`s meat and blood spots percentages from the free-range and backyard systems were 10.6% and 15.3%, respectively. It was concluded that while eggs produced from free-range system are superior in terms of egg weight, shape index, and Haugh unit those obtained from backyard hens are higher in eggshell thickness, eggshell breaking strength, and egg yolk colour.

scholarly journals Effects of replacement noug seed cake (Guizotia abyssinica) with treated tagasaste (Chamaecytisus palmensis) leaf meal on egg quality traits of layer hens

2021 ◽  
pp. 277-284
Author(s):  
Sendekie Amare Sisay ◽  
Kasahun Habtamu Ayalew ◽  
Alemayhu Yohannes Dagnew
Keyword(s):  
Shell Thickness ◽  
Egg Quality ◽  
Control Diet ◽  
Shape Index ◽  
Quality Parameters ◽  
Shell Weight ◽  
Great Opportunity ◽  
Nutritional Factors ◽  
Treatment Groups ◽  
Randomized Design

Egg quality treats are significantly impacted by nutritional factors either deficient or excessive quantities in the layer diets. In this study one hundred eight, 32 weeks age of Bovans Brown chickens were used as an experimental animals. Four iso-nitrogenous and iso-caloric based ration diets were formulated. The level of ration replacing NSC by TTLM was at 0%(T1), 5%(T2), 10%(T3) and 15%(T4) from the total ration. Complete Randomized Design (CRD) was used with four treatments, three replicate (9chicken/replicate) and the experiment lasted for 12 weeks. Egg quality parameters were determined at the interval 28 days by randomly taking 5 freshly-laid eggs from each replication and determine egg size, eggshell, albumen and yolk quality by using different measurement parameters. The results showed that egg shape index, yolk weight (g) and yolk ratio (%) were similar (P>0.05) among treatment groups. Eggshell thickness and yolk color score were significantly varied (p<0.05) with different levels of TTLM substitution. In the present study shell thickness, shell weight and shell ratio were higher in the treatment groups (5, 10 and 15% TTLM) than the control (0%) diets. The study showed that shell thickness ranged from 0.32-0.38 mm at T1 and T3 TTLM, respectively. Haugh unit (84.04±1.79) and albumen height (7.01±0.23) were highest (P<0.05) at T3 than the other treatments. Based on results most of the external and internal egg quality parameters were significantly changed when the level of TTLM increased up to15% than the control diet and it implies a great opportunity in utilizing TTLM.

scholarly journals Sunflower Seed Meal and Probiotics in Short-term Feeding of Laying Hens

2021 ◽  
Author(s):  
Yasir Ditta ◽  
Sadia Naseem ◽  
Ketwee Saksrithai ◽  
Annie J. King
Keyword(s):  
Specific Gravity ◽  
Sunflower Seed ◽  
Shell Thickness ◽  
Laying Hens ◽  
Egg Quality ◽  
Quality Parameters ◽  
Seed Meal ◽  
Shell Weight ◽  
Egg Weight ◽  
Egg Shell

Abstract BackgroundHorticultural byproducts may be used to partially or completely replace more expensive soy and corn while providing adequate energy and protein for broilers and laying hens. Probiotics, such as lactic acid bacteria, may aid in digestion of fibrous byproducts such as sunflower seed meal containing complex carbohydrates that along with some amino acids may not be easily digested by monogastric animals. Thus, byproducts and probiotics, when fed to poultry, may improve the production of nutritious meat and eggs. ResultsWhite Leghorn Crosses (64 layers at 65- to 74-wk-old) were fed one of four diets for four weeks. Diets were (1) a corn/soy Control, (2) Control + 20% sunflower seed meal (SFM), (3) Control + Probiotics (Lactobacillus plantarum, rhamnosus, and paracasei - each at > 23.3 Mil CFU/g for a total of approximately 70,000,000 Mil CFU/g added in drinking water), and (4) Control + 20% SFM + Probiotics. Significance (P < 0.05) and trends (P < 0.10) were determined for production measurements as well as external and internal egg quality parameters. Diet did not significantly affect production measurements. There were trends due to Probiotics*Week for FCR and SFM*Probiotics*Week for feed intake. For external egg quality, SFM significantly increased egg weight, decreased specific gravity, and caused a downward trend for egg shell thickness. SFM*Week produced a significant effect on specific gravity. Probiotics significantly increased egg weight and egg shell weight while decreasing egg shell thickness; there was a trend due to temporal effects on specific gravity. For internal egg quality, SFM, SFM*Week, Week, and SFM*Probiotics*Week significantly affected yolk color. Week affected all internal measurements and SFM*Week caused weekly fluctuations, thereby producing a trend for Haugh unit. ConclusionsDiet had no effect on production measurements. SFM increased egg weight and decreased specific gravity; Probiotics increased egg weight, shell weight, and shell thickness. Future research in needed to assess production and egg quality parameters when feeding various fiber types, the digestibility of SFM/Probiotic diets, and colonization of varying quantities of probiotics (added in water and feed) in the gut of various types and ages of laying hens.

scholarly journals Effect of different phosphorus levels on the performance and egg quality of laying hens fed wheat- and maize-based diets

2010 ◽  
Vol 55 (No. 10) ◽  
pp. 420-427 ◽  
Author(s):  
M. Skřivan ◽  
M. Englmaierová ◽  
V. Skřivanová
Keyword(s):  
Feed Intake ◽  
Shell Thickness ◽  
Egg Quality ◽  
Negative Impact ◽  
Quality Parameters ◽  
Available Phosphorus ◽  
Egg Weight ◽  
Diet Type ◽  
Phosphorus Levels

The effects of diet type (wheat- or maize-based) and concentration of available phosphorus (AP; about 4, 3 and 2 g/kg) on the parameters of hen performance and egg quality as well as shell calcium (Ca) and phosphorus (P) contents were examined. Two experiments were carried out in which 240 and 120, respectively, older ISA Brown hens were housed in enriched cages. The interaction of diet type and AP concentration was ascertained for all evaluated characteristics except the amount of Ca and P deposited in shells in the first experiment. In the second experiment, the interaction of diet type and AP concentration was found for feed intake, egg weight, shell thickness and weight as well as the albumen quality parameters. Furthermore, Ca deposition in shells increased (P &lt; 0.001) with the wheat diet. Hens fed a maize-based diet (P &lt; 0.001) laid heavier eggs. The highest level of AP (4.1 g/kg) in the wheat-based diet significantly (P &lt; 0.001) decreased albumen height, albumen index and Haugh units (HU). These trends were the same in both experiments. The results indicate that 0.27% AP in wheat-based diet and 0.30% AP in maize-based diet are adequate for hens with the intake 115 g of feed with 3.5% of Ca without a negative impact on performance or egg quality.

scholarly journals Analysis of the relations between some physicalindicators of market eggs  

2011 ◽  
Vol 57 (Special Issue) ◽  
pp. S1-S6
Author(s):  
R. Gálik ◽  
Z. Poláková ◽  
Š. Boďo ◽  
M. Denker
Keyword(s):  
Shell Thickness ◽  
Statistical Significance ◽  
Shape Index ◽  
Statistical Dependence ◽  
Shell Weight ◽  
Egg Weight ◽  
P Values ◽  
Significant Dependence ◽  
Independent Variable ◽  
Mutual Relations

The paper discusses the relations between some physical indicators of market eggs of laying hens housed in conventional and enriched cage batteries. The measured results were evaluated by the multiple regression dependence method. They show that in the case of both the conventional as well as the enriched cages a statistically significant dependence exists between the eggshell deflection (dependent variable) and thickness, or the force needed for the eggshell destruction (independent variable). The respective P values are given in brackets (0.002 &lt; 0.05; 0.03 &lt; 0.05; 1.16 &times; 10<sup>&ndash;10 </sup>&lt; 0.05; 8.31 &times; 10<sup>&ndash;4 </sup>&lt; 0.05); in the case of the conventional cage and enriched cage also a statistically significant dependence existed (3.81 &times; 10<sup>&ndash;91 </sup>&lt; 0.05; 3.86 &times; 10<sup>&ndash;81</sup>; 1.27 &times; 10<sup>&ndash;97 </sup>&lt; 0.05; 3.46 &times; 10<sup>&ndash;57 </sup>&lt; 0.05) between the shell weight (dependent variable) and shell thickness, or egg weight (independent variable); in the conventional cage, statistical dependence also occurred between the eggshell weight and egg shape index, (1.07 &times; 10<sup>&ndash;6 </sup>&lt; 0.05), in the enriched cage this was on the verge of statistical significance (0.062 &gt; 0.05); if in the conventional cage the eggshell thickness was increased by 1 mm, the shell deflection decreased by 0.08 mm,and if the force necessary for the eggshell destruction was increased by 1 N, the shell deflection decreased by 0.0003 mm; if in the conventional cage the shell thickness was increased by 1 mm, the shell weight increasee by 15.509 g and if the egg weight was increased by 1 g, the shell weight increased by 0.061 g. Our work brings further knowledge concerning the monitored characteristics and their mutual relations.

scholarly journals EGG QUALITY TRAITS IN WG, GG AND GL JAPANESE QUAIL POPULATIONS

2019 ◽  
Vol 17 (1) ◽  
pp. 49-55 ◽  
Author(s):  
H. Lukanov ◽  
A. Genchev ◽  
P. Kolev
Keyword(s):  
Japanese Quail ◽  
Shell Thickness ◽  
Egg Quality ◽  
Shape Index ◽  
Egg Mass ◽  
Quality Traits ◽  
Egg Weight ◽  
Poultry Breeding ◽  
Average Shape

The aim of the study was to evaluate egg quality traits in three heavy Japanese quail populations created and reared in the Poultry Breeding Unit of the Trakia University – Bulgaria, marked as WG, GG and GL. In the experiments, 160 female birds from populations WG and GG, and 96 birds from population GL were tested up to the 6th production month. The main egg quality traits were controlled. The highest average egg weight was registered in WG group and the lowest in GL group, 14.04±0.32 g and 12.79±0.29 g respectively (p<0.05). The highest average Shape index was observed in group GG (78.31±0.53%), vs the lowest in WG quails (77.55±0.62%). Albumen proportion is almost 2/3 of egg mass, with average values from 57.14% in group WG tо 59.90% in group GG. Yolk proportion was about 30%, with smaller differences between the groups. The shell share from all tested groups comprised between 10.95 and 12.58% of egg weight. Average shell thickness was the greatest in eggs of WG quails (223.53±5.52 μm), and the lowest – in GG quails (216.91±6.83 μm). Egg quality traits were typical for the meat productive type of Japan quails.

scholarly journals Egg quality parameter of Naked Neck chicken and commercial layer strains in Bangladesh

2020 ◽  
Vol 6 (3) ◽  
pp. 514-518
Author(s):  
Md Kamrul Hasan ◽  
Hasnat Mamun ◽  
Md Nazmul Hossain ◽  
Md Anisur Rahman
Keyword(s):  
Egg Quality ◽  
Shape Index ◽  
Quality Parameter ◽  
Future Research ◽  
Egg Weight ◽  
Naked Neck ◽  
Poultry Farms ◽  
Quality Grading ◽  
Different Strains

Egg quality parameter is important for determination of egg quality, grading of egg and pricing. To conduct this study, 50 eggs of Hy-line Brown, 50 eggs of ISA Brown, 50 eggs of Saver-579 Brown and 50 eggs of Novogen Brown and 50 eggs of Naked Neck were collected from different poultry farms of Sylhet. Egg shape index (ESI) of Hy-line Brown, ISA Brown, Saver-579, Novogen Brown and Naked Neck were 78.86±1.24, 78.85±0.5, 78.45±1.20, 81.43±1.56 and 76.85±0.92 respectively. Egg weight of Hy-line Brown, ISA Brown, Saver-579, Novogen Brown and Naked Neck were 62.48±1.54g, 61.89±1.2g, 61.41±1.47g, 64.76±1.37g and 37.45±1.2g respectively. Yolk weight of Hy-line Brown, ISA Brown, Saver-579, Novogen Brown and Naked Neck were 18.09±0.62g, 18.26±0.29g, 19.33±0.32g, 19.73±0.21g and 15.12±0.48g respectively. Among the different strains/breed, Novogen Brown has the highest value and Naked Neck has the lowest value for ESI, egg weight and yolk weight. So that the grading value of Novogen Brown has the highest among other strain/breed. Future research is necessary to see the internal egg quality parameter (albumen index, yolk index, Haugh Units (HU) and yolk colour) of different strain/breed, which will help for grading of egg. Asian J. Med. Biol. Res. September 2020, 6(3): 514-518

scholarly journals Impact of Different Rearing Systems and Age on Bovans White Layer’s Performance, Egg Quality Traits and Synthesis of Heat Shock Protein 70 kDa

2018 ◽  
Vol 18 (4) ◽  
pp. 1045-1060 ◽  
Author(s):  
Yasin Baykalir ◽  
Ulku Gulcihan Simsek
Keyword(s):  
Heat Shock Protein 70 ◽  
Egg Production ◽  
Egg Quality ◽  
Shape Index ◽  
Quality Traits ◽  
Conventional System ◽  
Shell Weight ◽  
Organic System ◽  
Egg Weight ◽  
System P

AbstractThis study was conducted to investigate the performance of laying hens and to determine possible age-related changes on external and internal quality traits of their eggs and synthesis of heat shock protein 70 kDa (HSP70) in the conventional cage and organic rearing systems. For this purpose, 4 different Bovans White hybrid flocks of the same age were monitored in each of these two systems for 52 weeks. While a total of 360 eggs were examined to determine the effects of rearing system and age (30 and 60 weeks) on egg quality traits, 48 liver tissue samples were examined for the analysis of HSP70. Egg production (hen-day) and dirty egg ratio were higher in the organic rearing system (P<0.05). The age at 50% yield, the age at peak of lay, and peak production rate were calculated as 156, 218.75 days and 95.98% in the conventional system, and 155.75, 201.50 days, and 96.56% in the organic system, respectively (P>0.05). While egg weight, albumen weight, yolk weight, shell weight, shape index, and yolk colour were higher in the organic system, the crude ash ratio of eggshell and shell ratio were higher in the conventional system (P<0.05). It was also found that the egg weight, albumen weight, yolk weight, shell weight, and the percentage of yolk were higher at 60 weeks of age (P<0.001). The percentage of shell and albumen, shape index, and yolk colour were higher at 30 weeks of age (P<0.001). The interactions between rearing system and age were statistically significant in terms of shell thickness, shape index, crude ash ratio, and yolk colour (P<0.001). Stress protein (HSP70) level was affected only by the rearing system and was higher in the organic system (P<0.001). As a result, the organic system can be considered as advantageous in terms of egg production and quality traits and the eggs of young hens exhibited better properties. The high level of HSP70 in the organic system could indicate that hens were affected by the environmental conditions at higher rates and/or the hens reared in the organic system had a stronger antioxidant defence system.

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