scholarly journals Effect of Storage Methods on Egg Characteristics and Embryonic Development of Guinea Fowl (Numida meleagris) Eggs

2020 ◽  
pp. 8-13
Author(s):  
Patrick Atta Poku . Jnr ◽  
Clement Gyeabour Kyere ◽  
Serekye Yaw Annor ◽  
Keziah Kyerewaa Boateng
Keyword(s):  
Weight Loss ◽  
Embryonic Development ◽  
Vegetable Oil ◽  
Egg Quality ◽  
Experimental Treatment ◽  
Guinea Fowl ◽  
Egg Weight ◽  
Saw Dust ◽  
Egg Storage ◽  
Storage Methods

Aims: This study was conducted to investigate the influence of different egg storage methods on egg characteristics and embryonic development of Guinea fowl (Numedia meleagris) eggs. Study Design: A Complete randomized design (CRD) was used for the experiment. Place and Duration of Study: The study was conducted at the Poultry Unit of the Department of Animal Science Education, University of Education, Winneba, Mampong campus. Methodology: A total of one hundred and eighty (180) hatching eggs were used for the experiment. The various experimental coops were labelled in accordance with their experimental treatment as paper crates (T1), vegetable oil (T2) and saw-dust (T3). Each treatment (T) had three replications (20 eggs per replicate), which gave a total of nine replications. Data collected were analyzed using General Linear Model (GLM) procedure of SAS. Results: Results showed that egg storage methods had significant (P < .05) effect on egg weight after storage, egg weight loss and embryonic development. The highest (P < .05) egg weight after storage was observed among eggs stored with vegetable oil and lower among eggs stored on paper crates. Eggs treated with vegetable oil produced very excellent (P < .05) results with lower weight loss while eggs stored with paper crates recorded the highest weight loss. Embryonic development was significantly (P< .05) higher among eggs treated with vegetable oil followed      by saw-dust with paper crates being the least. Albumen weight and yolk weight was significantly (P < .05) higher among eggs treated with vegetable oil. Similar (P < .05) albumen weight was observed for both saw-dust and paper crates. The least yolk weight was observed among eggs stored on paper crates. Conclusion: In conclusion, coating table eggs with vegetable oil could be effectively used to preserve egg quality and improve embryonic development.

Comparisons of egg quality traits, egg weight loss and hatchability between striped and normal duck eggs

2013 ◽  
Vol 54 (2) ◽  
pp. 265-269 ◽  
Author(s):  
J. Yuan ◽  
B. Wang ◽  
Z. Huang ◽  
Y. Fan ◽  
C. Huang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Egg Quality ◽  
Quality Traits ◽  
Egg Weight

Role of shell diffusion area in incubating eggs at simulated high altitude

1978 ◽  
Vol 45 (4) ◽  
pp. 551-556 ◽  
Author(s):  
H. S. Weiss
Keyword(s):  
Weight Loss ◽  
Gas Exchange ◽  
Embryonic Development ◽  
Ambient Pressure ◽  
Enskog Equation ◽  
Egg Weight ◽  
Excess Loss ◽  
Simulated High Altitude ◽  
Ambient Gas

Embryonic development is inhibited when eggs are incubated at 9,100 m (0.3 atm) despite a normoxic environment. The problem apparently relates to respiratory gas exchange occurring by diffusion through gas-filled pores in the shell. Gaseous flux is therefore inversely proportional to ambient pressure and is affected by the physical characteristics of the ambient gas (Chapman-Enskog equation). Excess loss of H2O and CO2 occurs in eggs incubating at altitude and could be detrimental. Such increased loss should be correctable by decreasing diffusion area. This was tested by progressively increasing coverage of the shell with paraffin and incubating at simulated 0.3 ATA (225 Torr) in 100% O2. Uncoated eggs failed to hatch, but numbers of chicks increased with increased coverage. Maximum hatch was an extrapolated 90% of controls at 69% shell coverage. With further coverage, hatch size decreased. Egg weight loss, and estimate of H2O diffusion, was around three times controls in uncoated eggs but decreased linearly with paraffin coverage, reaching near normal at maximum hatch. Reduction of diffusion area to 0.3 normal at maximum hatch generally balanced the increased flux predicted for 0.3 ATA.

scholarly journals Egg quality of Banat naked neck hens during storage

2021 ◽  
Vol 37 (2) ◽  
pp. 87-97
Author(s):  
Zdenka Skrbic ◽  
Milos Lukic ◽  
Veselin Petricevic ◽  
Snezana Bogosavljevic-Boskovic ◽  
Simeon Rakonjac ◽  
...  
Keyword(s):  
Weight Loss ◽  
Room Temperature ◽  
Storage Time ◽  
Egg Quality ◽  
Internal Quality ◽  
Egg Weight ◽  
Naked Neck ◽  
The Impact ◽  
Temperature Storage

In less intensive production systems, native poultry breeds can be used in order to diversify the products and achieve self-sustainability of these breeds through production. Given the missing data on the sustainability of quality of eggs obtained from indigenous, native hens, during storage, the aim of the study was to determine the most important parameters of egg quality of indigenous breed of Banat Naked Neck hens during a four-week period in different storage conditions. The design of the experiment was two-factorial with 4 levels of storage time factors (fresh eggs - 0, 1, 2, 3 and 4 weeks of storage) and 2 levels of temperature storage condition factors (room temperature and refrigerator). The room temperature was on average 21.3?C and the refrigerator temperature 8?C. Quality analysis was performed on a total of 200 eggs, and it included following parameters: egg weight, egg weight loss, weight and proportion of structural components: shell, yolk and albumen, albumen height, yolk colour, Haugh Units and albumen pH. The storage time had a significant effect on all properties of egg quality, except for the yolk colour, which was under the impact of the interaction of storage time and temperature. Storage temperature influenced egg weight loss (<0.001), shell weight (<0.05), albumen height (<0.0001), Haugh Units (<0.0001) and albumen pH (<0.0001). By storing in the refrigerator, changes in internal quality were significantly slowed down. After 28 days of storage in the refrigerator, the values of albumen and Haugh Units were higher than the same parameters of eggs stored for only 7 days at room temperature.

scholarly journals Evaluation of egg quality parameters of two Hungarian ostrich populations

2021 ◽  
pp. 51-57
Author(s):  
Lili Dóra Brassó ◽  
István Komlósi
Keyword(s):  
Weight Loss ◽  
Surface Area ◽  
Egg Quality ◽  
Storage Period ◽  
Spherical Shape ◽  
Shape Index ◽  
Quality Parameters ◽  
Egg Weight ◽  
Positive Correlation ◽  
Significant Difference

The aim of our study was to evaluate the quality parameters, porosity and weight loss of eggs deriving from the two most significant ostrich farms in Hungary. Quality parameters included weight, length, width, shape index, egg volume, surface area, circumference and shell volume.  The effect of storage conditions in both farms and the incubation technology on egg weight loss in farm “A” were also examined.  The research objective was to impart a comprehensive knowledge on egg quality parameters of the main ostrich populations in Hungary and to compare the trios and the farms with each other and the international literature. We could reveal significant differences between trios in all egg quality traits. In conclusion, the shorter and the narrower the eggs were, the more spherical shape they had.  Narrower eggs showed smaller surface area, volume, circumference and shell volume and vice versa. Eggs from farm “B” indicated significantly greater width, shape index, surface area, circumference and shell volume than farm “A”. A significant difference was observed in weight loss during storage between the farms.  Weight loss in farm “A” was a multiple of farm “B”. In farm “B” there was a weak, positive correlation between storage period and weight loss (r=0.22, P≤0.05), in farm “A” it was not significant (P=0.52). There was no relationship between the initial egg weight and weight loss either in farm “A” or farm “B” (P=0,21, P=0,69). A slight positive correlation could be noted between egg porosity and weight loss (r=0.24, P≤0.05). Pores count presented here was less than the international results. Poultry eggs contain the most pores at the blunt end, less via the equator and the least at the pointed end. In ostrich egg we found more pores via the equator against the blunt end. To draw more precise conclusions, further investigation should be carried out on porosity. Considering the fact that the length of storage period and the weight loss during incubation are in strict correlation with hatchability, we intend to extend our research aims to these traits.

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 PRE - AND POST HATCH GROWTH OF NIGERIAN INDIGENOUS GUINEA FOWL AS INFLUENCED BY EGG SIZE AND HATCH WEIGHT.

2021 ◽  
Vol 21 ◽  
pp. 59-65
Author(s):  
K. L. Ayorinde ◽  
J. O. Atteh ◽  
K. Joseph
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Weight Gain ◽  
Egg Size ◽  
Guinea Fowl ◽  
Egg Weight ◽  
Embryonic Growth ◽  
Large Size

Two experiments were conducted to investigate the effects of egg size on embryonic growth during incubation and of egg size and hatch weight on growth to 12 weeks of age in the Nigerian indigenous Guinea fowl. Weight loss in eggs incubated was about 5.42% while weight gain was 1.02g with the fastest increase in the last trimester of incubation. At hatching, the keets were 72.42% of the weight of the eggs. Egg weight was positively significantly (P<0.05) correlated with embryonic weight and is reliable for estimating the small, medium and large size. Egg weight was embryonic weight. Body weight up to 12 weeks of age differed when eggs were classified into significantly (P<0.05) and positively correlated to body weight up to 4 weeks of age and egg weight was found to be reliable for estimating body weight up to 4 weeks only. Hatch weight was also significantly (P<0.05) and positively correlated with subsequent body weight to 8 weeks of age.  

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