Factors influencing the hatching performance of duck eggs

Narahari, D.; Mujeer, K. A.; Ahmed, M.; Rajini, R. Asha; Sundararasu, V.

doi:10.1080/00071669108417355

Cited by 14 publications

(9 citation statements)

References 3 publications

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“…Fertility rates of 85% in 1993 and 83% in 1994 were comparable to those expected in domestic poultry and waterfowl [Romanoff, 1972;Narahari et al, 1991;Stubblefield and Toll, 1993;Deeming, 1995], so infertility was not considered to be a major factor contributing to the low hatch of eggs in this study. Fertility rates of wild trumpeter swans have not been documented.…”

Section: Discussionsupporting

confidence: 51%

“…This resulted in a decrease in mean egg storage time from 8.2 days in 1993 to 5.6 days in 1994. Narahari et al [1991] and Arnold [1993] showed that for duck eggs, as the duration of pre-incubation storage increased, there was a decline in hatchability. Preincubation delay can lead to morphological changes in the blastoderm and malformations in the embryo [Meijerhof, 1992].…”

Section: Discussionmentioning

confidence: 96%

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Artificial incubation of trumpeter swan eggs: Selected factors affecting hatchability

et al. 1999

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Section: Discussionsupporting

confidence: 51%

Section: Discussionmentioning

confidence: 96%

Artificial incubation of trumpeter swan eggs: Selected factors affecting hatchability

et al. 1999

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“…In the second year, in all flocks of ducks lighter eggs by 1.4% (Kh1 and K2) or by 2.7% (01 and Kh0) than in the first year were laid. Egg fertilization in Kh1 ducks was found to be 16.2% higher and hatchability from fertilized eggs 3.4% lower than that reported by NARAHARI et al (1991). These authors demonstrated that egg fertilization and duckling hatchability were higher in ducks kept on free range with access to water than in those kept on deep litter without any access to ponds.…”

Section: Methodsmentioning

confidence: 64%

Comparison of reproduction and carcass traits in light type of ducks of four conservative flocks over eight generations

Ksiazkiewicz

2003

Arch. Anim. Breed.

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Abstract. Ducks of four conservative flocks: Khaki Campbell (Kh1), Orpington (01), crossbreds of those two breeds (Kh0) and Miniducks (K2) being kept without selection over 8 generations were used for analysis. The mean values of reproductive and carcass traits were determined and illustrated by linear regression equations. In the first year of study a significant differentiation was noted among flocks in: number of eggs, from 101 (K2) to 156 (Kh1); egg weight, from 70 (K2) to 75 g (Kh0) and hatchability from fertilized eggs, from 62 (Kh0) to 72% (K2). Upward time trends in egg weight and hatchability from fertilized eggs were noted in all flocks of birds, whereas in egg number in Kh1, 01 and K2 flock; and in egg fertilization in Kh1 and Kh0 flocks. In the second year a lower egg number and egg weight were found, as well as lower egg fertilization and hatchability. Differentiation in meatiness mean values between flocks was found over 8 generations of both sexes at 7 weeks of age in body weight and in breast and leg muscles yield in the carcass. Upward time trends in leg muscle yield and skin with subcutaneous fat content in the carcass were noted in all flocks of ducks of both sexes while in body weight at 7 weeks of age in the females of Kh1 and K2 flocks. Contrary, downward time trends in the body weight at 3. week of age and in breast muscle yield at 7. week of age were found in birds of both sexes and all conservative flocks.

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“…Albumen quality is compromised by prolonged storage time 3 . A proportionate increase in early embryonic mortality occurs with an increased storage time of duck and quail eggs 25,38 . This coincides with results of Deeming and Ar 13 , reporting a lower hatchability in ostrich eggs that could be attributed to an increase in early mortalities for eggs stored between 12 and 14 days.…”

Section: Introductionmentioning

confidence: 99%

Factors related to shell deaths during artificial incubation of ostrich eggs

Brand¹,

Cloete²,

Brown³

et al. 2007

J. S. Afr. Vet. Assoc.

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he ostrich industry experiences a high rate of embryonic mortalities during artificial incubation of eggs. Embryonic deaths were studied from data recorded on 37 740 fertile eggs incubated artificially during the 1998-2005 breeding seasons. Roughly 10 000 eggs that sustained embryonic mortalities were classified according to the stage and nature of death, i.e. before 21 days of incubation, after 21 days of incubation, deaths after pipping and rotten eggs. Although infection may have played a role in ~1300 rotten eggs, no detailed knowledge of the pathogens involved was available. The remainder of deaths could not be related to pathogens and the deaths were thus generally referred to as non-infectious. The overall level of embryonic mortality in all the eggs studied was 28.5 %. Overall embryonic mortality was affected by incubator, with higher levels (57.0 %) found in eggs incubated in an African Incubator(R) and also in eggs that were transferred between incubators during incubation (38.1 %). Overall embryonic mortality also increased in eggs produced by older females. Eggs produced in the autumn had the highest level of embryonic mortality at 53.6 %, whereas eggs produced in the winter had a marginally higher level of embryonic mortalities of 29.2 % compared with eggs produced during summer (27.4 %). Eggs produced by South African (SA) Black males crossed to Zimbabwean Blue females had high levels of embryonic losses of 45.7 %. The embryonic mortality of eggs produced by SA Blacks or Zimbabwean Blue breeding birds subjected to pure breeding was similar at ~33-34 %, but embryonic mortality was improved in eggs produced by Zimbabwean Blue males crossed to SA Black females (27 %). Embryonic mortality was increased in eggs that were set directly (32.0 %) or subjected to longer than 6 days of storage (43.5 %). Embryonic mortality was affected by year. The results that were obtained will assist in determining non-infectious factors that have a negative effect on hatching success. Steps can thus be taken to eliminate such factors that may compromise hatching success

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Factors influencing the hatching performance of duck eggs

Cited by 14 publications

References 3 publications

Artificial incubation of trumpeter swan eggs: Selected factors affecting hatchability

Artificial incubation of trumpeter swan eggs: Selected factors affecting hatchability

Comparison of reproduction and carcass traits in light type of ducks of four conservative flocks over eight generations

Factors related to shell deaths during artificial incubation of ostrich eggs

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