The Effect of Eggshell Thickness on the Hatchability of Guinea Fowl and Pheasants

Yamak, Umut Sami; Boz, MA; Uçar, Ahmet; Sarıca, Musa; Önder, Hasan

doi:10.1590/1806-9061-2015-0214

Cited by 22 publications

(16 citation statements)

References 20 publications

(28 reference statements)

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“…No significant differences were observed between hatching rates and eggshell thickness of chicken eggs [ 7 ]. Similar results were found in partridge [ 8 ], guinea fowl, and pheasant eggs [ 9 ]. Furthermore, the effect of eggshell thickness on hatching time was found insignificant [ 8 ].…”

Section: Introductionsupporting

confidence: 84%

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The effect of eggshell thickness on hatchability of quail eggs

Ergun¹,

Yamak²

2017

Vet World

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Background and Aim:The aim of the successful incubation period is to achieve maximum health chicks in each batch. Therefore, all factors affecting incubation have to be investigated in detail. This study investigated the effect of eggshell thickness on hatchability of quail eggs.Materials and Methods:A total of 1415 eggs were collected from the same flock at the ages of 23 and 41 weeks. Two different incubations were performed at these eggs. Eggshell thicknesses of all eggs were determined with an ultrasonic gauge before incubation. Incubation period was applied as for 18 days. After 15 days of incubation, eggs were transferred to hatching machine. Eggs were classified as thin-, medium-, and thick-shelled according to eggshell thickness values.Results:Eggshell thicknesses were ranged between 0.24 and 0.36 mm, and the differences between the hatching rates of thickness values were not found significant. Hatchability of thin-, medium-, and thick-shelled eggs was found as 69.2%, 69.4%, and 82.4% for Experiment 1. These values were as 87.8%, 89.2%, and 91.9% for Experiment 2, respectively. Similar to eggshell thickness frequencies, the differences between hatching rates of eggshell thickness groups were found insignificant.Conclusion:Results of this study showed that eggshell thickness does not affect hatchability.

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Section: Introductionsupporting

confidence: 84%

“…The differences between hatching rates by eggshell thickness values were not statistically significant for Experiment 1 (p=0.236) and Experiment 2 (p=0.965). Similar to these findings, no significant differences were found in hatching rates of guinea fowl and pheasant eggs by eggshell thickness [ 9 ].…”

Section: Discussionsupporting

confidence: 56%

The effect of eggshell thickness on hatchability of quail eggs

Ergun¹,

Yamak²

2017

Vet World

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“…Eggshellthickness was also no significantly different between hatched and unhatched groups of eggs. This result agrees with Yamak et al (2016),but disagrees with that of Huwaida et al, (2015). Egg shape index was significantly different (p <0.05) between hatched and unhatched groups of eggs.…”

Section: Resultscontrasting

confidence: 64%

Assessment of hatchability of Tunisian local turkey compared to commercial turkey and its relationships with physical egg traits

Djebbi

M’Hamdi

Haddad

2018

IJAR

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A study was conducted to evaluate the hatchability of local turkey comparedto commercial turkey eggs, and its relationships with physical egg traits. A total of 410 local turkey eggs and 252 commercial turkey eggs were usedfor this study and the data were submitted to analysis of variance. Average fertility (%) and fertile egg hatchability (%)were significantly (P<0.05) lower in local turkeys compared to commercial turkeys. Furthermore, infertile eggs (%),early-, mid-, and late-period deaths during incubation were higher in the local turkeys compared to the commercial turkeys. Embryo mortality occurred mainly days 27th and 28th of incubation. Based in this result, hatchability of turkey local eggs was very low when compared with commercial turkey eggs; this reduction resulted in part from in high rate of infertility, embryonic mortality caused by poor management system and genotype. The results of effect of physical egg traits (weight, shell thickness, maximum width and length) on hatchability showed no significant effect on percentage hatchability of fertile eggs (>0.05). Hatchability was affected by egg shape index.

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“…Variation of shell thickness during the laying period was also observed by Nickolova (2009), but without statistical significance, while Adamski (2008) measured significantly thicker shell in the early stage compared to peak and late stages of the laying period, which is in accordance with our findings. Thicker shell is usually considered as unsuitable in hatching eggs (Bernacki et al, 2013), but Yamak et al (2016) achieved similar hatchability results in eggs categorized as thin-, medium-and thick-shelled (<0.31, 0.31-0.35 and >0.35 mm, respectively).…”

Section: Tab1 Egg Weight and Shell Quality Traits (M ± Se)mentioning

confidence: 95%

Changes of Selected Egg Quality Traits Depending on the Laying Period of Semi-Intensively Raised Guinea Fowl Hens

2019

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The aim of this study was to evaluate selected egg quality traits depending on the laying period of pearl grey guinea fowl hens reared in semi-intensive system. In each of three evaluation terms (the second, fourth and sixth month of laying period) 40 eggs were collected, with the total of 120 eggs were used for quality evaluation. Methods of descriptive analysis and one-way ANOVA were used for data analysis. Overall values of three evaluation terms for egg weight, shell thickness, yolk to albumen ratio, Haugh units and yolk colour were 40.63 ± 0.27 g, 0.50 ± 0.01 mm, 0.58 ± 0.01, 75.37 ± 0.41 and 12.74 ± 0.11, respectively, whereas overall values of shell, albumen and yolk proportion were 15.32 ± 0.15, 53.75 ± 0.16 and 30.94 ± 0.17%, respectively. Significant differences were found for values of egg quality traits depending on the laying period, but the average value was generally comparable with literature data reported for similar rearing conditions for this Guinea fowl variety.

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The Effect of Eggshell Thickness on the Hatchability of Guinea Fowl and Pheasants

Cited by 22 publications

References 20 publications

The effect of eggshell thickness on hatchability of quail eggs

The effect of eggshell thickness on hatchability of quail eggs

Assessment of hatchability of Tunisian local turkey compared to commercial turkey and its relationships with physical egg traits

Changes of Selected Egg Quality Traits Depending on the Laying Period of Semi-Intensively Raised Guinea Fowl Hens

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