Fertility and hatchability of eggs laid in the pullet-to-breeder transition period and in the initial production period

Pedroso, Adriana Ayres; Andrade, María Auxiliadora; Café, Marcos Barcellos; Leandro, Nadja Susana Mogyca; Menten, José Fernando Machado; Stringhini, José Henrique

doi:10.1016/j.anireprosci.2005.03.001

Cited by 29 publications

(22 citation statements)

References 16 publications

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“…An evaluation of indices related to hatchability is required when these eggs are to be used for the production of chicks (Pedroso et al, 2005). The data obtained on increase in the proportion of albumen with increase in egg size in this study corroborate the findings of Finkler et al (1998) who reported that with increasing egg size there is an increase in the amount of albumen and a decrease in the proportion of yolk.…”

Section: Discussionsupporting

confidence: 82%

Efecto del peso y la línea, sobre la utilización de los componentes del huevo y peso embrionario durante la incubación

et al. 2012

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SUMMARYThe study was conducted to determine the effect of egg size on egg components utilization and embryonic weight during incubation of Dominant Black (DB) and Yaffa Brown (YB) strains of pullet eggs. A total of 810 hatching pullet eggs (405 eggs per strain) were grouped into three egg sizes (small, medium and large) per strain resulting in six treatment groups which were replicated three times with 45 eggs per replicate. Two eggs per replicate were used to determine the embryonic, albumen and yolk weight on each of the days 1, 7, 10, 15, and 18 of incubation resulting into a total of 180 eggs. Data obtained were subjected to analysis of variance in a 2 x 3 factorial experimental layout. Results revealed a significant (p<0.05) increase in albumen percentage as egg weight increased (r = 0.93) in both strains before incubation. The albumen weight decreased steadily to zero from day 1 till the end of incubation while the rate of yolk weight did not show the same pattern. The ranged values of albumen percentage for large, medium and small eggs were; 58.89 ± 10.78 to 1.75 ± 0.56, 56.83 ± 0.55 to 0.61 ± 0.28 and 54.04 ± 1.81 to 5.42 ± 0.89, respectively. At 18 th day, the embryonic weights of both medium and large-sized eggs (28.56 and 28.80 g, respectively) were significantly (p<0.05) higher than small-sized eggs (22.54). It could be concluded that the rate of albumen utilization during incubation influenced the embryonic weight (r = -0.97). Also the high content of yolk when compared with that of albumen towards the end of incubation in the three groups could result from the need for energy and protein by the developing embryo after hatching before access to any feed. RESUMENSe determinó el efecto del tamaño sobre la utilización de los componentes del huevo y peso embrionario durante la incubación de huevos de las líneas Dominant Black (DB) y Yaffa Brown (YB). Un total de 810 huevos (405 por línea), fueron agrupados en tres tamaños por línea (pequeños, medios y grandes) dispuestos en seis grupos experimentales con tres replicaciones de 45 huevos cada una. Un total de 180 huevos, dos por repetición, fueron usados para determinar el peso de albumen y yema embrionarios los días 1, 7, 10, 15 y 18 de la incubación. Los resultados fueron sometidos a análisis de varianza en una disposición factorial 2 x 3. En ambas líneas, antes de la incubación, se registró un aumento (p<0,05) del porcentaje de albumen al hacerlo el peso del huevo (r = 0,93). El peso del albumen disminuyó hasta cero de forma sostenida desde el día 1 hasta el final de la incubación, aunque la proporción de yema no siguió el mismo modelo. Los rangos de porcentaje de albumen fueron los siguientes de 58,89 ± 10,78 a 1,75 ± 0,56, para los huevos grandes, de 56,83 ± 0,55 a 0,61 ± 0,28, para los medianos y de 54,04 ± 1,81 a 5,42 ± 0,89 para los pequeños. El día 18 los pesos embrionarios de los huevos medianos y grandes (28,56 y 28,80 g, Archivos de zootecnia vol. 62, núm. 238, p. 192. EGBEYALE, SOGUNLE, ABIOLA, OZOJE, SOWANDE AND ADELEYE respectivamente) f...

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Section: Discussionsupporting

confidence: 82%

Efecto del peso y la línea, sobre la utilización de los componentes del huevo y peso embrionario durante la incubación

et al. 2012

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“…The highest embryo mortality was recorded in the first seven days of incubation and on hatching, according to the results reported in Cobb breeders (Pedroso et al, 2005) and Tibetan and Dwarf breeds (Zhang et al, 2008). Our data confirm that the first 6-7 days of incubation and the hatching period are the most critical periods for the survival of chicken embryos.…”

Section: Discussionsupporting

confidence: 77%

“…Similar fertility data were recorded in poultry strains and other breeds; for instance, 77.5%-97.4% in the Cobb strain (Pedroso et al, 2005) and 89.9%-93.5% and 91.6%-95.4% in the Tibetan and Dwarf bantam breeds, respectively (Zhang et al, 2008). The best fertility values were recorded in March and this could be the month with the major reproductive efficiency of this breed.…”

Section: Discussionsupporting

confidence: 61%

Breeding performance in the Italian chicken breedMericanel della Brianza

Cerolini

Madeddu

Zaniboni

et al. 2010

Italian Journal of Animal Science

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In Italy, 90 local avian breeds were described; the majority (61%) were classified as extinct and only 8.9% as still widely spread. Therefore, efforts for conservation of Italian avian breeds are urgently required. The aim of this study was to record the breeding performance of the Italian breed Mericanel della Brianza to multiply a small population, in order to develop a conservation programme. Fourteen females and eight males were available at the beginning of the reproductive season in 2009 and organised into eight families (1 male/1-2 females) kept in floor pens. Birds received a photoperiod of 14L:10D and were fed ad libitum. Breeding performance was recorded from March to June. Egg production and egg weight were recorded daily; eggs were set every two weeks and fertility, embryo mortality and hatchability were recorded. Mean egg production was 37% and mean egg weight was 34±3.49 g. High fertility values from 94% to 87% were recorded in the first three settings and the overall mean fertility value was 81.6%. Overall hatchability was only 49.6% owing to a high proportion of dead embryos. Embryo mortality occurred mainly between days 2 and 7 of incubation and during hatching. The highest hatchability values were recorded in settings 1 and 2, 69% and 60% respectively, and a large decrease was found in the subsequent settings. Marked variations in egg production, fertility, hatchability and embryo mortality were found among families. The present results represent the basic knowledge of reproductive parameters necessary to improve the reproductive efficiency of the breed within a conservation plan.

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“…Christensen et al (2005) found that the lower eggshell conductance of eggs produced by young breeders resulted in inadequate movement of water vapor and respiratory gases during the incubation process. Pedroso et al (2005) reported that eggs from young breeders had thicker eggshells and produced smaller chicks that had less physical strength to break the shell during hatching, resulting in embryo mortality after pipping. Hamidu et al (2007) showed that parent flock age influenced daily embryonic metabolism during the latter days of incubation, which coincided with the incidence of greater embryonic mortality during these periods of incubation.…”

Section: Duckling Performancementioning

confidence: 98%

“…The reason for these conflicting data may have been differences in management and nutrition as higher calcium intakes can increase shell thickness, reduce pore numbers, and reduce gaseous exchange (Peebles, 1986), and vice versa. Eggs from young breeders have been reported to possess thick shells and produce smaller chicks, resulting in increased embryo mortality after pipping (Pedroso et al, 2005). Moreover, the lower eggshell conductance of eggs from young breeders has been suggested to result in inadequate movement of water vapor and respiratory gases during the incubation process (Christensen et al, 2005).…”

Section: Introductionmentioning

confidence: 97%

Effect of incubation humidity and flock age on hatchability traits and posthatch growth in Pekin ducks

et al. 2012

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This study was conducted to determine the effect of incubation relative humidity (RH) from 14 to 24 d of incubation during 3 parental ages on hatchability and posthatching growth of Pekin ducklings. Egg production was divided into 3 age groups (25-35, 36-55, and 56-65 wk). A total of 21,600 hatching eggs was subjected to 55, 60, 65, and 70% RH from 14 to 24 d, whereas standard conditions were used from 0 to 14 d and 24 to 28 d of incubation. All eggs were individually weighed before setting in the incubator and again at 14 and 24 d of incubation to determine egg weight loss. A sample of 20 eggs from unhatched and hatched eggs from each group were randomly taken on the hatching day and used to determine eggshell thickness and pore number. Duckling weight at hatching was recorded and BW gain, feed consumption, feed conversion, and viability were then recorded to 21 d of age. Egg weight increased with hen age but did not differ by incubation treatment. Increasing RH from 55% to 60, 65, and 70% decreased percentage egg weight loss in a stepwise manner irrespective of parental age. Shell thickness was less for hatched eggs compared with nonhatched eggs within each parental age. Shell thickness decreased while pore density increased with increased parental age for both nonhatched and hatched eggs. The lowest embryonic mortality among the incubation periods (14-24 and 0-24 d) and best hatchability of fertile eggs was recorded with 60% RH during the first parental age (25-35 wk), 65% RH during 36-55 wk of age, and 70% RH during 56-65 wk of age. The best incubation results were directly associated with the greatest duckling BW at hatching and at 21 d of age, BW gain, feed conversion, and viability during each parental age period. It was concluded that duck eggs produced within a specific parental age period require a specific incubation RH to attain the best hatchability and posthatching duckling performance.

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Fertility and hatchability of eggs laid in the pullet-to-breeder transition period and in the initial production period

Cited by 29 publications

References 16 publications

Efecto del peso y la línea, sobre la utilización de los componentes del huevo y peso embrionario durante la incubación

Efecto del peso y la línea, sobre la utilización de los componentes del huevo y peso embrionario durante la incubación

Breeding performance in the Italian chicken breedMericanel della Brianza

Effect of incubation humidity and flock age on hatchability traits and posthatch growth in Pekin ducks

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