Influência da temperatura de incubação em ovos de matrizes de corte com diferentes idades e classificados por peso sobre os resultados de incubação

Rosa, P. S.; Guidoni, A. L.; Lima, Ideraldo Luiz; Bersch, F.

doi:10.1590/s1516-35982002000400025

Cited by 28 publications

(39 citation statements)

References 7 publications

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“…These results are consistent with the findings of Rosa et al (2002), who found lower hatchability of the eggs of 62-wk-old breeders (82.80%) than of 34-wk-old breeders (86.60%). According to Almeida et al (2006), the lower hatchability of eggs laid by older breeders may be explained by the decline in eggshell quality as breeders age, resulting in higher embryo mortality.…”

Section: Resultssupporting

confidence: 93%

“…According to Almeida et al (2006), the lower hatchability of eggs laid by older breeders may be explained by the decline in eggshell quality as breeders age, resulting in higher embryo mortality. The eggs of older breeders have thinner eggshells with the higher number of pores relative to younger breeders, allowing gas exchange between the egg and the environment, and therefore, higher moisture is required during incubation to prevent excessive egg dehydration (Rosa et al, 2002). Egg dehydration has a decisive role during incubation, as it affects embryonic development and hatchability rates (Tona et al 2001).…”

Section: Resultsmentioning

confidence: 99%

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Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality

Araújo

Leandro

Mesquita

et al. 2016

Rev. Bras. Cienc. Avic.

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Two experiments were conducted to evaluate the effect of broiler breeder age and incubator type on hatching parameters, hatch window, embryo diagnosis results, and hatchling physical quality. The treatments consisted of a combination of three broiler breeder ages (29, 35 and 59 weeks of age) and two incubator types (single stage, SS; or and multiple stage, MS). A completely randomized design in a 3x2 factorial arrangement was applied. In Experiment I, 1,896 eggs were used and 360 eggs in Experiment II. There was an interaction between breeder age and incubator type only for hatchling physical quality score. Independently of incubator type, hatchability rate, late embryo mortality, and egg contamination were higher in the eggs laid by older breeders (59-wk-old). Early mortality (0-4 days) was higher in the embryos from young breeders (29-wk-old). A shorter hatch window birth was obtained in the SS incubator, resulting in higher hatchling body weight relative to egg weight, and better hatchling physical quality score. Both types of incubators provide good conditions for embryo development; however, the physical quality of chicks derived from eggs from intermediate-aged breeders (35-wk-old) is better when eggs are incubated in SS incubators.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality

Araújo

Leandro

Mesquita

et al. 2016

Rev. Bras. Cienc. Avic.

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“…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. Egg specific gravity (Table 7) was significantly different between treatments in weeks 37 and 38, with higher values obtained in egg from broiler breeders drinking from bell drinkers.…”

Section: Resultssupporting

confidence: 92%

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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“…O valor encontrado no G3 está em desacordo com Murakami et al (2003), ao citarem que, à medida em que o lote de galinhas envelhece, dá-se redução simultânea na produção e na qualidade interna e externa dos ovos e, consequentemente, na eclodibilidade. Rosa et al (2002) pesquisando a influência da temperatura de incubação de matrizes de corte com diferentes idades e classificados por peso, notaram efeito significativo dos fatores idade e categorias de peso das aves no peso médio dos ovos e no aumento da mortalidade embrionária.…”

Section: Figura 4 Valores De Temperatura De Cama Em Função Dos Horárunclassified

Produção de ovos de matrizes pesadas criadas sob estresse térmico

Furtado¹,

Mota²,

Nascimento³

et al. 2011

Rev. bras. eng. agríc. ambient.

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RESUMOAs condições de conforto térmico dentro das instalações afetam diretamente a produtividade dos animais, como é o caso das matrizes pesadas. Este trabalho objetiva avaliar os índices bioclimáticos de três aviários (G1, G2 e G3) de matrizes pesadas e os índices produtivos dessas instalações, que tinham lotes de aves com 35, 48 e 66 semanas, respectivamente, criadas na região semiárida paraibana, durante o período de estiagem. Nos horários considerados mais quentes do dia, os índices bioclimáticos ficaram elevados, causando situação de desconforto térmico para os animais, influenciando no desempenho das aves. O nível de pressão sonora ficou dentro do estabelecido pelas normas brasileiras. A idade das aves teve influência na produção total de ovos e as maiores produções foram obtidas com aves mais jovens, sendo de 74,83, 76,86 e 52,78% em G1, G2 e G3, respectivamente, enquanto a eclodibilidade foi semelhante em todos os lotes (média de 95,68%). Palavras-chave: ambiência, incubação, ovos, posturaEgg production of broiler breeders reared under heat stress ABSTRACT The thermal comfort conditions inside the facilities directly affect the productivity of animals as it is the case of broiler breeders. This study aimed to evaluate the bioclimatic indexes of three aviaries (G1, G2 and G3) of broiler breeders and the production indices of these three facilities that had lots of poultry of different ages, 35, 48 and 66 weeks, respectively, reared in the semiarid region of Paraíba State, Brazil, during the dry season. In the hottest hours of day, the bioclimatic indexes were high, causing a situation of thermal discomfort for the animals, influencing the productive performance of the poultry. The sound pressure level was within the Brazilian standards. The age of the birds affected the total egg production and the highest productions obtained with younger birds, being 74.83, 76.86 and 52.78%, in G1, G2 and G3, respectively, while hatchability was similar in all lots (on average 95.68%).

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Influência da temperatura de incubação em ovos de matrizes de corte com diferentes idades e classificados por peso sobre os resultados de incubação

Cited by 28 publications

References 7 publications

Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality

Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality

Production aspects of broiler breeders submitted to different drinker types

Produção de ovos de matrizes pesadas criadas sob estresse térmico

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