Genetic impact on external and internal egg quality traits of Vanaraja and Gramapriya birds and their crosses in Bihar

Poultry farming is gaining strength in mitigating livelihood and nutritional security to the poor farmers which constitute 60% of the India’s population. Thus eggs of superior quality is prerequisite for profitable marketing and for hatchability too. The present study was conducted on two improved varieties, Vanaraja (dual purpose type) and Gramapriya (the layer type) chicken developed at PDP, Hyderabad and their crosses on random mating. The genetic groups taken were Gramapriya (male) x Gramapriya (female),Vanaraja(male) x Vanaraja(female), Gramapriya(male) x Vanaraja(female)and Vanaraja (male) x Gramapriya(female). 6 males and 30 females were taken from each genetic group and maintained separately under deep litter system with a mating ratio of 1 male : 5 females. To study the genetic effect on external and internal egg quality traits, a total of more than 50 eggs were collected at random from each of 4 genetic groups upto 28 weeks of age. The average shell thickness obtained to be ranged from 0.36 to 0.39 mm. The average albumen and yolk indices were found to be ranged from 7.396 to 8.656 and 41.749 to 43.888 respectively. The average shell weight and percentage of shell weight observed to be ranged from 4.147 to 5.627 g and 17.266 to 18.003% respectively.

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Egg quality traits of indigenous, exotic and crossbred chickens (Gallus domesticus L.) in Rajshahi, Bangladesh

Journal of Life and Earth Science ◽

10.3329/jles.v5i0.7352 ◽

1970 ◽

Vol 5 ◽

pp. 63-67 ◽

Cited By ~ 8

Author(s):

M Saiful Islam ◽

Ripon Kumar Dutta

Keyword(s):

Egg Quality ◽

Shape Index ◽

Internal Quality ◽

Phenotypic Correlation ◽

Quality Traits ◽

Shell Weight ◽

Albumin Ratio ◽

Genetic Groups ◽

Hen’S Egg ◽

Chicken Breeds

This study was aimed at investigating the external and internal egg quality traits along with their correlation values of an indigenous (Deshi), three exotics (Cobb 500 of Broiler, Fayoumi, and RIR) and a crossbred (Sonali derived from RIR?× Fayoumi?) chicken breeds available in Rajshahi. From a total of 50 eggs (5 breeds × 10 replicates each), the external quality traits such as gross egg weight (EW), egg length (L), egg width (W), egg volume (EV), shell weight (SW), shell ratio (SR) and egg shape index (ESI), and the internal quality traits like yolk weight (YW), albumen weight (AW), yolk ratio (YR) and albumin ratio (AR) were determined. Results showed that highly significant differences exist for both external and internal egg quality traits between the genetic groups of chicken (P<0.001). Even though RIR showed the highest EW and EV and Fayoumi had the lowest for both traits, AR was in the sequence of Cobb 500 > RIR> Indigenous> Fayoumi> Sonali. Phenotypic correlations among the egg quality traits revealed that EV was not significantly correlated with EW except for Sonali (P<0.001). The association between EW and ESI was negative in all the chickens except Sonali. However, EW was significantly correlated with the AW in RIR (P<0.001), Cobb 500 (P<0.01) and Sonali (P<0.01). Moreover, the EW was significantly correlated with YW only in Fayoumi and RIR (P<0.05). In view of the cholesterol, fat and antioxidant contents of the hen’s egg, a higher AR is healthier than a higher YR. The present findings therefore suggest that Cobb 500, RIR and Indigenous eggs are healthier than Fayoumi and Sonali eggs that contain higher YR. Key words: Egg quality traits; phenotypic correlation; Indigenous; exotic and crossbred chickens DOI: 10.3329/jles.v5i0.7352 J. Life Earth Sci., Vol. 5: 63-67, 2010

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Analysis of quality and prediction of external and internal egg traits in Mexican native turkey hens

Emirates Journal of Food and Agriculture ◽

10.9755/ejfa.2020.v32.i9.2143 ◽

2020 ◽

pp. 647

Author(s):

Rodrigo Portillo- Salgado ◽

Benigno Ruiz- Sesma ◽

Paula Mendoza- Nazar ◽

José Guadalupe Herrera- Haro ◽

Jaime Bautista- Ortega ◽

...

Keyword(s):

Linear Regression ◽

Surface Area ◽

Egg Quality ◽

Pearson Correlation ◽

Correlation Coefficients ◽

Internal Quality ◽

Unit Surface Area ◽

Regression Equations ◽

Quality Traits ◽

Shell Weight

This study aimed to evaluate external and internal quality traits and determine prediction equations for some of these traits in eggs of Mexican native turkey hens. A total of 72 eggs from native turkey hens in the laying stage raised in rural municipality of Villaflores, Chiapas were measured. The external traits evaluated were: egg weight (EW), polar diameter (PD), equatorial diameter (ED), egg shape index (SI), shell weight (SW), shell percentage (SP), egg surface area (ESA) and shell weight per unit surface area (SSA). The internal traits were: albumen height (AH), yolk height (YH), albumen weight (AW), yolk weight (YW), Haugh units (HU), albumen percentage (AP), yolk percentage (YP) and yolk color (YC). The data were analyzed with descriptive statistics and Pearson correlation coefficients (r) and linear regression using the SAS program, ver. 9.4. The values obtained for the external egg quality traits showed greater variability. Pearson's correlation coefficients between external and internal traits were positive and moderately significant (P <0.05), as well as highly significant (P <0.0001), and ranged from r = 0.31 (EW vs PD) to r = 0.99 (ED vs ESA). All linear regression equations to predict EW, SW, AW and YW were found to be significant (<.0001). The best predictors of EW were PD, SI, SW and ESA (R2 = 76%). SW and YW traits can be adequately predicted using the EW and SI values together (R2 = 59% and R2 = 74%, respectively), while the AW can be predicted from the EW (R2 = 33%). Based on the results obtained, it is suggested to implement selection programs to improve the quality parameters of the native turkey hen egg in Mexico.

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

Annals of Animal Science ◽

10.2478/aoas-2018-0027 ◽

2018 ◽

Vol 18 (4) ◽

pp. 1045-1060 ◽

Cited By ~ 1

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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Production performance and egg quality evaluation of indigenous chickens across different agro-ecologies of Southern Ethiopia

Veterinary Integrative Sciences ◽

10.12982/vis.2022.012 ◽

2021 ◽

Vol 20 (1) ◽

pp. 133-145

Author(s):

Berhanu Bekele ◽

◽

Aberra Melesse ◽

Wodmeneh Esatu ◽

Tadelle Dessie ◽

...

Keyword(s):

Egg Production ◽

Egg Quality ◽

Quality Parameters ◽

Production Performance ◽

Southern Ethiopia ◽

Quality Traits ◽

Shell Weight ◽

Feed Resources ◽

Indigenous Chickens ◽

Growth Performances

Indigenous chickens were evaluated for their egg production, growth performances, and external and internal egg quality parameters across three agro-ecologies. For experiment 540 (180 male and 432 female) chickens were distributed to the three agro-ecologies (lowland, midland, and highland) at their 20 weeks age. Body weight was recorded from each chicken during distribution, 4th week, and 8th week after distribution into pre-selected households. Egg production potential was identified from the indigenous chickens across different agro-ecologies. Moreover, egg quality traits were evaluated from randomly selected 270 (90 from each agroecology) eggs. Egg production of indigenous chickens in the highland was 47.7 which was highly significantly (P = 0.0001) lower number than of midland (54.2) and lowland (51.4). Except for Shell weight, all the external egg quality parameters evaluated were exhibited significant differences across different agro-ecologies. Among the internal egg quality parameters only albumen weight had a significantly (P = 0.007) higher in midland than highland. Most of the variation in egg weight was due to the positive correlation with egg length (69%), and egg width (67%). There was a variation for performance and egg quality traits of indigenous chickens in different agro-ecologies, especially better in midland, which might be resulted from the variation in environment, feed resources availability, and better management followed by households.

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Direct and Indirect Effects of Egg Quality Traits on Egg Weight of Potchefstroom Koekoek Chicken Genotype

International Journal of Veterinary Science ◽

10.47278/journal.ijvs/2021.053 ◽

2021 ◽

Vol 10 (4) ◽

pp. 280-285

Keyword(s):

Path Analysis ◽

Indirect Effects ◽

Egg Quality ◽

Path Coefficient ◽

Quality Traits ◽

Direct And Indirect Effects ◽

Statistical Tool ◽

Shell Weight ◽

Egg Weight ◽

Dependent Variables

Path analysis is the statistical tool used to assess the direct and indirect effects of independent variables on the dependent variables. This study was done to examine the association among egg weight (EWt) and egg quality traits, including egg length (EL), egg width (EWD), yolk weight (YW), shell weight (SW), shell ratio (SR), shell index (SI), albumen weight (AW), albumen ratio (AR) and yolk ratio (YR), and assess the direct and indirect influences of egg quality traits on egg weight. Three hundred eggs of Potchefstroom Koekoek chicken genotype were used in the study to determine egg weight and egg quality traits. Pearson’s association and path coefficient analysis were utilised for analysing data. The findings of association showed that EWt had positively high statistically significant association (P<0.01) with EL (r=0.79), EWD (r=0.55), YW (r=0.45), AW (r=0.48), and AR (r=0.38). Path analysis results revealed that YR (-1.98) followed by YW (1.72) made the biggest direct influence on the EWt, while AR followed by SW displayed the highest indirect effect on EWt via YR and YW. Correlation findings recommend that improving EL, EWD, YW, AW and AR might result in increased EWt. The results of path analysis indicate that YR and YW could be selected during breeding to improve EWt of Potchefstroom Koekoek chicken genotype. Chicken farmers may use the outcomes of the current study to predict EWt using egg quality traits.

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Effects of divergent selection for growth on egg quality traits in Japanese quail

Animal Production Science ◽

10.1071/an14911 ◽

2016 ◽

Vol 56 (11) ◽

pp. 1797 ◽

Cited By ~ 5

Author(s):

Mohammed A. F. Nasr ◽

Mahmoud S. El-Tarabany ◽

Michael J. Toscano

Keyword(s):

Body Mass ◽

Japanese Quail ◽

Egg Quality ◽

Control Line ◽

Quality Traits ◽

Shell Weight ◽

External Shell ◽

Selection For ◽

And Control ◽

The Impact

The experiment was designed to investigate the impact of selection for increased body mass on external and internal egg quality traits of Japanese quail. Three hundred and sixty Japanese quail, divergently selected over three generations for different body mass at 4 weeks of age, were used. Quail were homogeneously divided into three groups each consisting of 120 birds: high body mass (HBM), low body mass (LBM) and Control. ANOVA was used to detect the effect of selection on egg quality. In addition, correlation between external and internal egg quality traits was measured. Our results revealed that HBM quail laid heavier eggs (P = 0.03 compared with LBM but not significantly different with Control quail) with a higher external (shell thickness, shell weight, eggshell ratio and eggshell density, P = 0.0001) and internal egg quality score (albumen weight, P = 0.003; albumen ratio, P = 0.01; albumen height, yolk height, yolk index and Haugh unit, P = 0.0001) when compared with both the Control and LBM. The egg surface area and yolk diameter were significantly higher in HBM when compared with the LBM but not with the Control line. Egg weight was positively correlated with albumen weight (r = 0.54, P = 0.0001), albumen ratio (r = 0.14, P = 0.05), yolk height (r = 0.27, P = 0.0001), yolk weight (r = 0.23, P = 0.002), yolk diameter (r = 0.14, P = 0.05) and yolk index (r = 0.21, P = 0.005) but was negatively correlated with yolk ratio (r = –0.16, P = 0.03). Our results indicate that selection for higher body mass might result in heavier eggs and superior egg quality.

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Effect of Dietary Black Cumin Seeds (Nigella Stavia),Garlic(Allium Sativum)and Lettuce Leaves (Lactuca Sativa) on Performance and Egg Qualty Traits of Native Layer Hens

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/910/1/012001 ◽

2021 ◽

Vol 910 (1) ◽

pp. 012001

Author(s):

Hasan Abdullah Mohammed ◽

Sanaa A. M. Al-Hameed

Keyword(s):

Lactuca Sativa ◽

Allium Sativum ◽

Egg Quality ◽

Quality Traits ◽

Shell Weight ◽

Black Cumin ◽

Best Value ◽

Layer Hens ◽

Egg Shell ◽

Black Seeds

Abstract This work is done in rental house at Shaqlawa/Erbil city and It has been adapted to be a typical miniature field for experiment. (two month rearing ),for native layer at age (35week). Aimed of this experiment to investigate the effect of dietary 5% individual powder of black seeds, garlic and grinding of lettuce leaves on performance and egg quality traits of layer Hens. Atotal number of 64 layer distributed for four treatments, each of treatment included 16 hen and 4 cock, The treatments were as follows : T1 (control) without any addition, T2: 5% black cumin seeds powder, T3: 5% garlic powder, T4 : 5% lettuce leaves grinding. Result observed that T4 impact to improve the egg performance and color yolk egg, best value pointed in T1 for eggs phenotype characterized further for Albumin, yolk length/cm and significant (P≤0.05) with other treatments. Results also shown in T3 were the best value for egg shell strength (Kg/cm2). T2 observed better value for thickness, egg shell weight/g and percentage of egg shell. T3 obtained best value for yolk height and yolk Albumin index egg and H.U, followed by T2.

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Phenotypic relations between egg weight and other egg quality traits of South Eastern Nigeria local chicken

Nigerian Journal of Animal Production ◽

10.51791/njap.v38i2.2786 ◽

2021 ◽

Vol 38 (2) ◽

pp. 3-8

Author(s):

A. I. Adeolu ◽

V. U. Oleforuh-Okoleh,

Keyword(s):

Negative Correlation ◽

Egg Quality ◽

Egg Laying ◽

Internal Quality ◽

Quality Traits ◽

Shell Weight ◽

Southeastern Nigeria ◽

Egg Weight ◽

Mean Values ◽

Local Chicken

The experiment was carried out with a total of one hundred and fifty eggs, which were collected from a local chicken variety of southeastern Nigeria hens reared in a cage system. The objective of this study was to determine the phenotypic relationship between egg weight and the other egg quality traits. The mean values related to the external egg quality traits - egg weight (EW), egg length (EL), egg breadth (EB), egg shape index (EST), shell weight (SW) and shell thickness (ST) were 38.99 g, 49.98 mm, 36.66 mm, 0.73, 4.05 g and 0.34 mm respectively. The internal egg quality traits – albumen height (AH), albumen weight (AW), yolk height (YH), yolk weight (YW) and Haugh unit (HU) have the following mean values, 7.53 mm, 19.86 g, 16.80 mm, 12.62 g and 65.21 respectively. There were significant (P<0.01) positive phenotypic correlations between EW and EL, EW and EB, EW and SW, and between EW and all the internal quality traits except HU - which had a non significant (P>0.01) negative correlation. Significant negative correlation was found between EW and ESI. It was concluded that it was feasible to assess some egg quality traits through the egg weight. This is important in view of integrating the local chicken into egg laying breeding programs in Nigeria.

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Effect of Supplementation of Multi Enzymes on Production Performance and Egg Quality Traits in White Leghorn Layers

THE INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY ◽

10.21887/ijvsbt.v12i2.3730 ◽

2016 ◽

Vol 12 (2) ◽

Author(s):

C. Pandian ◽

A. Sundaresan ◽

A. V. Omprakash

Keyword(s):

Egg Production ◽

Egg Quality ◽

Live Weight ◽

Economic Benefits ◽

Production Performance ◽

Feed Consumption ◽

Quality Traits ◽

White Leghorn ◽

Significant Difference ◽

Enzyme Supplementation

The present study was conducted to assess the effect of supplementation of Multi-enzymes with lysophospholipids on production performance of pure line White Leghorn layers. Body weights before and after the experiment did not differ significantly across the experimental diets. Irrespective of the dietary treatments, the birds gained 3.83 per cent of live weight relative to its initial body weight. Mean per cent Hen housed egg production was significantly (Pis less than 0.05) higher in diet supplemented with 0.10 MEC-L than other groups. Mean egg weight and average daily feed consumption during 25 to 35 weeks of age indicated no significant effect of enzyme supplementation. Average daily feed consumption per bird in control, 0.05 % and 0.1% multi-enzyme supplemented groups was 108.13, 105.66 and 107.67 g respectively and birds offered control diet recorded numerically more feed intake than enzyme supplemented groups. Comparatively low feed per egg was observed in 0.10 per cent group followed by 0.05 per cent group which offers economic benefits than control diets. However, the egg quality traits between different dietary enzyme supplementation groups showed no significant difference.

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