Egg physical characteristics and hatchability

Narushin, Valeriy G.; Romanov, Michael N

doi:10.1079/wps20020023

Cited by 170 publications

(129 citation statements)

References 32 publications

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“…Factors that affect hatchability have been well described in previous studies and include male-female ratio and nutrition of parents, as well as egg-storage conditions (Yamak et al, 2015a;Kozuszek et al, 2009). Moreover, any abnormalities in egg physical characteristics can cause a collapse in embryo development and prevent successful hatching (Narushin & Romanov, 2002). This study calculated hatching rates separately for each shell thickness value of both guinea fowl and pheasant eggs.…”

Section: The Effect Of Eggshell Thickness On the Hatchability Of Guinmentioning

confidence: 99%

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

Yamak

Boz

Uçar

et al. 2016

Rev. Bras. Cienc. Avic.

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Successful incubation affects the number of healthy chicks in all poultry species. This study examined the effect of eggshell thickness on the hatching rates of guinea fowl and pheasant eggs. In total, 964 guinea fowl and 1,728 pheasant eggs were used in the study. Eggshell thickness was measured directly with an ultrasound gauge. Thicknesses ranged between 0.27-0.47 mm in guinea fowl and 0.24-0.49 mm in pheasant eggs. Incubation periods were 28 days for guinea fowl and 25 days for pheasant eggs. At the end of the incubation period, unhatched eggs were broken to identify the causes of embryonic mortality. Eggs were classified as thin-, medium-and thick-shelled, and hatching rates were calculated as a function of eggshell thickness. Differences in hatching rates of guinea fowl and pheasant eggs with different shell thicknesses were not statistically significant (p>0.05).

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Section: The Effect Of Eggshell Thickness On the Hatchability Of Guinmentioning

confidence: 99%

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

Yamak

Boz

Uçar

et al. 2016

Rev. Bras. Cienc. Avic.

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“…Different factors play crucial roles in influencing hatchability and growth performance during embryonic and post-hatch life, for instance genetic, egg characteristics and incubation environment (Narushin and Romanov, 2002;Petwket et al, 2003;Abiola et al, 2008). Nutrients utilization in the egg's embryo is crucial and their transfer from the mother to her embryo is completed before the egg is laid, thus the egg contains all of nutrients needed for the growth and development of the embryo.…”

Section: Introductionmentioning

confidence: 99%

Effect of in-ovo administration with two levels of amino acids mixture on the performance of Muscovy ducks

Gaafar

Selim

El-Ballal

2013

Emir. J. Food Agric

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Nutrient administration in-ovo could be considered as an alternative method to improve hatchability and duckling weight followed by better economic performance. On the 12th day of incubation, fertile duck eggs (n= 500) were distributed into 5 groups, each of 100. These were: un-injected control; 0.50 ml distilled water; 0.50 ml amino acids (AA) mixture; 0.75 ml distilled water; and 0.75 ml amino acids mixture. In-ovo injection of 0.50 ml but not 0.75 ml of AA mixture resulted in higher hatchability percentage than un-injected control; however this was not statistically confirmed. In-ovo injection of either 0.50 or 0.75 ml of AA mixture resulted in significantly (P < 0.05) higher body weight at hatch, marketing weight for males not for females, and higher feed intake than the un-injected control. There was no significant difference (P < 0.05) in feed conversion ratio between in-ovo amino acids ducks and un-injected control during the whole experimental periods. Liver weight as a percentage of body weight was higher (P < 0.05) in the in-ovo amino acids injected groups than un-injected control. Lymphoid organs of 0.50 AA-injected male group and 0.75 ml AA-injected female group were significantly (P < 0.05) heavier than the un-injected control. Antibodies titers did not differ (P < 0.05) between in-ovo amino acids injected groups and un-injected control. It is concluded that in-ovo injection of amino acids mixture may improve and accelerate growth and post-hatch performance of Muscovy ducks.

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“…Eggshell percentage is a direct indication of eggshell quality. Narushin & Romanov (2002) described the relationship between eggshell thickness and hatchability relative to broiler breeder age and observed that older breeders produced thinner eggs with thinner shells and lower hatchability. In the present study, eggshell percentage reduced as broiler breeders aged, which is consistent with the findings of Rosa (2002) that eggs from older breeders are frequently larger, and consequently present lower eggshell percentage.…”

Section: Resultsmentioning

confidence: 99%

Production aspects of broiler breeders submitted to different drinker types

Colvero

Carrijo

Garófallo

et al. 2014

Rev. Bras. Cienc. Avic.

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The objective of this study was of evaluate the influence of different drinker types on the egg production, water intake, mortality, poultry litter relative humidity, egg weight, eggshell percentage, and egg specific gravity of broiler breeders. The experiment was carried out in a commercial farm with 37-to 44-wk-old broiler breeders. A randomized block experimental design, consisting of two treatments (bell or nipple drinkers) with four replicates of 4.000 females each, was applied. Data were submitted to analysis of variance, and means were compared by the test of Student-Newman-Keuls at 5% significance level. Birds submitted to nipple drinkers presented lower water intake (p<0.05). There was no influence (p>0.05) of drinker type on egg production or mortality. Poultry litter relative humidity was lower (p<0.05) under the nipple-drinker system. Birds drinking from bell drinkers produced heavier eggs (p<0.05) between weeks 39 and 40. Hens drinking from bell drinkers laid eggs with higher specific gravity and eggshell percentage. It was concluded that nipple drinkers can be used for broiler breeders during lay.

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Egg physical characteristics and hatchability

Cited by 170 publications

References 32 publications

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

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

Effect of in-ovo administration with two levels of amino acids mixture on the performance of Muscovy ducks

Production aspects of broiler breeders submitted to different drinker types

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