scholarly journals EGG QUALITY OF THE NIGERIAN LOCAL CHICKEN AS INFLUENCED BY SOME MAJOR GENES

2021 ◽  
Vol 34 (1) ◽  
pp. 25-31
Author(s):  
S. O. Peters ◽  
C. O. N Ikeobi ◽  
M. O. Ozoje ◽  
O. A. Famakinwa ◽  
Y. S. Oshodi ◽  
...  
Keyword(s):  
Egg Quality ◽  
Shape Index ◽  
Egg Weight ◽  
Major Genes ◽  
Naked Neck ◽  
Local Chicken ◽  
Naked Neck Gene ◽  
Na Gene ◽  
Haugh Unit

An investigations was carried out to determine the effect of the major genes of frizzling and naked neck on the external and internal egg quality traits of the Nigerian local chicken. Egg weight significantly (P < 0.01) favoured the frizzled local chicken and the naked-necked local chicken over the fully feathered (normal ) local chicken. The frizzling gene, F, caused an increase of 8.13% in weight while the naked neck gene Na, increased egg weight by 5.85%. The Na gene caused the production of better egg shape index (0.73) when compared to F and nana, ff genotypes. Eggs of frizzed and naked-neck locals also had significantly (P < 0.05) better Haugh unit, percent shell, percent albumen and percent yolk than the normal feathered counterpart. It is therefore reasonable to incorporate the major genes frizzling and naked-neck in producing a locally-adapter commercial egg strain

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 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 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 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 Beç Tavuklarında (Numida meleagris) Yumurta Şekil İndeksinin Yumurta Kalitesine Etkileri

2016 ◽  
Vol 4 (9) ◽  
pp. 758 ◽  
Author(s):  
Sezai Alkan ◽  
Taki Karslı ◽  
İsmail Durmuş ◽  
Kemal Karabağ
Keyword(s):  
Surface Area ◽  
Egg Quality ◽  
Shape Index ◽  
Quality Characteristics ◽  
Unit Surface Area ◽  
Egg Volume ◽  
Egg Weight ◽  
Egg Shape ◽  
Unit Surface ◽  
Haugh Unit

The aim of this study was to investigated the effects of the egg shape index on egg quality characteristics in Guinea fowl. For this, the eggs were classified in terms of egg shape index, as ≤ 75, < 76 -77 > and ≥ 78. A total of 100 Guinea fowl eggs were evaluated to determine the egg quality traits ( egg weight, eggshell thickness, eggshell surface area, eggshell weight per unit surface area, eggshell ratio, albumen index, albumen ratio, yolk index, yolk ratio, yolk/albumen ratio, haugh unit and egg volume). In this study, eggshell thickness, eggshell weight per unit surface area, eggshell ratio, albumen index, albumen ratio, yolk index, yolk ratio, yolk/albumen ratio and haugh unit were not significantly affected by egg shape index groups. Whereas egg weight, eggshell surface area and egg volume were significantly affected by egg shape index groups. At the same time, there were found significant relationship between the egg shape index and egg quality traits. Egg shape index was found to be an important factor affecting the egg quality characteristics.

scholarly journals Influence of strain and production cycle on egg quality traits of two Nigerian indigenous chicken strains

2020 ◽  
Vol 45 (2) ◽  
pp. 29-39
Author(s):  
V. U. Oleforuh-Okoleh ◽  
U. M. Chukwuemeka ◽  
G. O. Adeoye
Keyword(s):  
Egg Quality ◽  
Shape Index ◽  
Internal Quality ◽  
Production Cycle ◽  
Strain Effect ◽  
Quality Traits ◽  
Indigenous Chicken ◽  
Egg Weight ◽  
Naked Neck ◽  
Egg Shape

Records obtained from purebred normal feather and naked neck Nigerian indigenous chicken strains were used to assess the influence of strain and production cycle on external and internal egg quality traits. The assessment commenced from first lay to 120 days of lay, classified into four production cycles (PC): PC1 (1-30 days of lays), PC2 (31-60 days of lays), PC3 (61-90 days of lays), and PC4 (91-120 days of lays). Mean egg weight, length and breadth were 4.34% heavier, 2.10% longer and 1.72% wider in the normal feather than in the naked neck (p<0.05). No disparity due to strain effect was found in egg shape index. Eggshells from the two strains had similar weight but varied in thickness with shells from the naked neck being 0.02mm thicker than those from the normal feather (p<0.05). Eggs from the normal feather were 7.13, 5.76, 5.00, 7.10 and 8.11% superior in albumen weight, yolk height, albumen height, yolk index, and albumen index, respectively compared to its naked neck counterpart (p<0.05). Production cycle significantly influenced all external egg quality studied. An increase of 16.21% in egg weight was obtained by PC4. Egg length and breadth increased consistently with each subsequent PC (p<0.05) whereas egg shape index decreased with PC (p<0.05). Higher values were recorded for yolk weight, yolk and albumen length and width in each subsequent production cycle. Haugh unit, yolk and albumen height had best values at PC2. Our findings indicate that strain type and production cycle highly influenced egg quality traits of Nigerian indigenous chickens with the normal feather showing superiority. Furthermore, the best internal quality was obtained at PC2 (31-60 days of lay). Our findings could be useful in choosing selection criterion traits in breeding plans for the development of different layer lines of normal feather and naked neck.

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 Effect of exogenous Phytase on Egg Production and Egg Quality of Spent Hen

2020 ◽  
Vol 20 (1-2) ◽  
pp. 68-76
Author(s):  
MK Bashar ◽  
MAR Howlider ◽  
SM Bulbul
Keyword(s):  
Egg Production ◽  
Egg Quality ◽  
Shape Index ◽  
Control Group ◽  
Egg Mass ◽  
Feed Conversion ◽  
Shell Weight ◽  
Spent Hen ◽  
Haugh Unit

The present study determined, assessed and quantified the exogenous phytase on egg production and egg quality of spent hens. Ninety laying hens (ISA- Brown) received iso-energetic and iso-nitrogenous diet supplemented with 0, 0.05, 0.1, 0.15 and 0.2 % phytase and reared in cages. Each layer was fed 120g feed/day from 90 to 100 weeks of age. At the inception of the study the spent hen at the age of 90 weeks had an average egg production 65.21 %. Phytase addition in diet increased (p<0.05) egg production  (7.67, 12.17, 12.04 and 15.87 % higher than control group), egg mass output (5.5, 9.34, 7.65 and 12.72 % higher than that of control) and feed conversion, but it did not alter shell weight, shell thickness, shape index, albumen index, Haugh unit, per cent yolk and yolk color. It was concluded that reduced egg production of spent hen at older ages to some extent might have a relationship to decreased availability of phosphorus. The decreased egg production in hens at older ages could be corrected by adding appropriate phytase level in the diet. Thus, it may be possible to extend and prolonged productive life of spent hens by supplying exogenous phytase in diet. However, the effect of availability of phosphorus on egg production using larger population for a longer period may be performed to confirm the findings of the current study. Bangladesh J. of Livestock Res. 20(1-2): 68-76, Jan-Dec 2013

scholarly journals Evaluation of egg quality characteristics of two strains of local turkey (Meleagris gallopavo) in Zaria, Kaduna State

2021 ◽  
Vol 48 (1) ◽  
pp. 1-11
Author(s):  
H. K. Yahaya ◽  
A. K. Olutunmogun ◽  
Y. B. Mohammad ◽  
M. M. Shettima ◽  
M. Kabir
Keyword(s):  
Egg Quality ◽  
Meleagris Gallopavo ◽  
Quality Characteristics ◽  
Reproductive Age ◽  
Economic Traits ◽  
Shell Weight ◽  
Egg Weight ◽  
Black And White ◽  
Haugh Unit

The study was conducted to investigate the external and internal egg quality characteristics of two local strains of turkey during their early reproductive age. A total of 96 freshly laid eggs were sampled from two local turkey strains having black and white plumages. The turkeys were 33weeks of age with two months into lay. Data were collected weekly for three weeks on egg weight, egg length, egg diameter, shell thickness, shell weight, shell index, albumen weight, yolk weight, albumen: yolk ratio, albumen length, yolk length, albumen diameter, yolk diameter, albumen height, yolk height, yolk index and Haugh unit and analyzed using the statistical package of SAS. The results revealed that highly significant (p<0.01) differences in the external traits occurred in egg weight, egg length and shell weight with the white turkey strain been superior. Also, the internal traits recorded highly significant (p<0.01) differences in albumen weight, yolk weight, albumen: yolk ratio, albumen length, yolk length and yolk diameter with the white strain performing better than the black strain. Highly significant correlations (p>0.01) exits in most of the correlated traits with the except for Haugh unit that had no significantly (p<0.01) correlations. Thus, since significant variations exits between the two strains, selection activities are recommended to improve these economic traits in egg weight using it has an index in selection and in possible prediction of the quality of poults to be hatched. Also, economically, it may be used to know the consumers' preference on the quality of turkey eggs consumed.     L'étude a été menée pour étudier les caractéristiques de qualité externe et interne des œufs de deux souches locales de dinde au début de leur âge de reproduction. Un total de 96 œufs fraîchement pondus ont été échantillonnés à partir de deux souches de dinde locales présentant des plumages noirs et blancs. Les dindes étaient âgées de 33 semaines avec deux mois de ponte. Des données ont été collectées chaque semaine pendant trois semaines sur le poids de l'œuf, la longueur de l'œuf, le diamètre de l'œuf, l'épaisseur de la coquille, le poids de la coquille, l'indice de la coquille, le poids de l'albumine, le poids du jaune, le rapport albumine: jaune, la longueur de l'albumen, la longueur du jaune, le diamètre de l'albumen, le diamètre du jaune, l'albumine hauteur, hauteur du jaune, indice de jaune et unité Haugh et analysés à l'aide du progiciel statistique de 'SAS'. Les résultats ont révélé que des différences très significatives (p = 0,01) dans les caractères externes se produisaient dans le poids des œufs, la longueur des œufs et le poids de la coquille avec la souche de dinde blanche supérieure. En outre, les traits internes ont enregistré des différences très significatives (p = 0,01) dans le poids de l'albumine, le poids du jaune, le rapport albumine : jaune, la longueur de l'albumine, la longueur du jaune et le diamètre du jaune, la souche blanche fonctionnant mieux que la souche noire. Des corrélations hautement significatives (p?0,01) existent dans la plupart des traits corrélés avec l'unité à l'exception de Haugh qui n'avait pas de corrélations significatives (p?0,01). Ainsi, étant donné que des variations importantes existent entre les deux souches, des activités de sélection sont recommandées pour améliorer ces caractères économiques en poids de l'œuf en utilisant un indice de sélection et de prédiction éventuelle de la qualité des dindonneaux à éclore. Aussi, économiquement, il peut être utilisé pour connaître la préférence des consommateurs sur la qualité des œufs de dinde consommés.

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