Effects of storage period and egg weight of Japanese quail eggs on hatching results (short communication)

Abstract

This study was undertaken to determine the effects of storage period and egg weight of hatching eggs of Japanese quails on fertility, hatchability results. Eggs were obtained 150 females quails, all at 15 weeks of age. A total of 1942 hatching eggs were separated into 3 groups as light-weight (9.50-10.50 g), medium-weight (10.51-11.50 g), and heavy-weight (11.51-12.50 g). Based on storage period, eggs were divided into 5 groups as group 1 (0-3 days), group 2 (4-6 days), group 3 (7-9 days), group 4 (10-12 days), and group 5 (13-15 days). The influence of storage period on hatchability of fertile eggs and early, middle, and late period embryonic mortality rates was found significant (P<0.01). The effect of egg weight on fertility rate, hatchability of fertile eggs and early embryonic mortality was significant (P<0.05, P<0.01). The significant differences between storage period groups were observed in hatchability of fertile eggs. The differences between egg weight groups for fertility rate, hatchability of fertile eggs and early embryonic mortality was significantly higher in light weight group than the other egg weight groups. Results of this study concluded that a 12 day pre-incubation storage of hatching eggs of Japanese quails did not appreciably affect hatching parameters. Use of medium or heavy weight eggs for hatching may reduce early embryonic mortality rate. Gruppen (9,50 g; 10,50 und 11,50 g) und diese wiederum in fünf Untergruppen mit einer Lagerdauer von 0-3; 4-6; 7-9; 10-12 und 13-15 Tagen eingeteilt. Es konnte ein signifikanter (p<0,01) Einfluss der Lagerungsdauer auf die Befruchtungsrate, auf das Schlupfergebnis und die embryonale Mortalität während der gesamten Brutdauer nachgewiesen werden. Gleiches galt auch für den Einfluss des Eigewichtes auf das Befruchtungs-sowie das Schlupfergebnis, während das für die embryonale Mortalität nur für den ersten Brutabschnitt zutraf. Signifikante Unterschiede ergaben sich für den Einfluss der Lagerungszeit auf das Schlupfergebnis befruchteter Eier und die embryonale Mortalität in der frü-hen Brutperiode. Die schlechtesten Ergebnisse erzielten die Eier mit den geringsten Gewichten gegenüber den Eiern der schwereren Gruppen. Die Untersuchungen ergaben, dass eine Lagerzeit von bis 12 Tagen die Schlupfergebnisse nur unwesentlich beeinträchtigten und höhere Eigewichte die embryonale Mortalität verringerten.Schlüsselwörter: Eilagerungsdauer, Eigewicht, Schlupfrate, embryonale Mortalität, Wachtel Introduction The attention of numerous researchers has been focused on the relationship between egg weight and time of storage and the effect of these on hatching success and chick quality for many years (WILSON, 1991). A number of papers dealing with the

Effect of egg size, age of hen and storage period on fertility, hatchability, embryo mortality and chick malformations in eggs of japanese quail (Coturnix coturnix japonica)

“…However, there was no significant (P>0.05) difference between the medium and lowest egg sized group in the regard (Table 1). This finding is in agreement with the experiment conducted in Turkey by Seker et al, (2005) that the embryo mortality rate of lightest (9.50-10.50 g) egg size group was higher than of medium and largest egg size groups, indicating that embryonic mortality decreases as the egg weight increases. This situation may be explained as heavy weight eggs have sufficient nutrients and centrally placed yolk to support embryonic growth and development compared to light weight eggs (Sekeret al, 2005).…”

“…However, there was insignificant (P> 0.05) difference between intermediate and longest egg storage period group in this regard (Table 3). This result was consistent with the experiment carried out in Turkey by Seker et al, (2005) who noticed that there was highly significant (P< 0.01) difference between the effect of storage period (≤3 days, 4-6 days, 7-9 days, 10-12 days and 13-15 days) on embryo mortality rates. Similarly, the result reported by Lacin et al, (2008) tells that the storage period (1-3 days, 6-8 days and 12-14 days) had highly significant (P< 0.01) effect on early death rates and interaction between egg storage period groups was significant (P< 0.05).…”

“…The quail eggs were transferred from setting tray to hatching tray on 15 th day of incubation. The eggs used to be hatched within [17][18] th day. The number of newly quail chicks hatched and the eggs that not hatched were counted.…”

Storage Period Affects Weight Loss of Japanese Quail Eggs

“…Fasenko et al (2001a) observed 87.5% and 70.5% hatchability in chicken eggs stored at 11.5°C for four and 14 days, respectively, and 70.42% and 65.6% hatchability in turkeys eggs stored at 17.4°C for the same periods (Fasenko et al, 2001b). Seker et al (2005) stored Japanese quail eggs between 9 to 12 °C and 70-75% relative humidity for 15 days and obtained 90. 00, 88.74, 67.96, 72.45, and 50.31% in eggs stored up to three days, 4-6 days, 7-9 days, 10-12 days, and 13-15 days, respectively.…”

Parâmetros da incubação e componentes dos ovos de codornas japonesas para corte (Coturnix japonica) submetidos à estocagem em baixas temperaturas (7,5 ± 1 ºC)

“…Porém outros autores afirmam que o peso do ovo é o fator dominante na determinação do peso ao nascer (SILVERSIDES; SCOTT, 2001;TONA et al, 2002).…”