Bone mineral density of tibae and femura of broiler breeders: growth, development and production

Paz, Ibiara Correia de Lima Almeida; Mendes, Ariel Antonio; Quinterio, R R; Vulcano, Luiz Carlos; Takahashi, S. E.; Garcia, Rodrigo Garófallo; Komiyama, Claudia Marie; Balog, Augusto; Pelícia, Kléber; Wescheler, FS; Scudeller, P S O; Piccinin, A

doi:10.1590/s1516-635x2006000200002

Cited by 8 publications

(16 citation statements)

References 13 publications

(16 reference statements)

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“…The quality of the eggshell, which not only determines the safety of production, but also affects the hatching rate of eggs (Wolc et al., 2012). As the laying hen ages, egg shells become thinner due to the increased egg weight and decreased endogenous bone calcium (Akbari Moghaddam Kakhki, Heuthorst, Heuthorst, Mills, Neijat, & Kiarie, 2019; Almeida Paz et al., 2006). ALA can regenerate vitamin E, which plays a key role in alleviating oxidative stress, promoting growth and improving calcium and phosphorus metabolism (Konieczka et al., 2017; Rehman et al., 2018; Sanders & Edwards, 1991).…”

Section: Discussionmentioning

confidence: 99%

Alpha‐lipoic acid improves the reproduction performance of breeder hens during the late egg‐laying period

Dai

et al. 2020

J Anim Physiol Anim Nutr

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Breeder hens in the late egg-laying period have lower reproductive performance, manifesting as degraded egg-laying rate, quality and hatching performance. The production performance of laying hens is influenced by breeder hens (Gong et al., 2019; Lang et al., 2019). The Qiling hen, used in the present study, is a Chinese native chicken. It is worth mentioning that, the reproductive performance of these local hens decreases rapidly in the late egg-laying period. Therefore, it is of great significance to find a solution to this problem from the perspective of nutritional regulation. In poultry, many factors are in connection with fertility.

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Section: Discussionmentioning

confidence: 99%

Alpha‐lipoic acid improves the reproduction performance of breeder hens during the late egg‐laying period

Dai

et al. 2020

J Anim Physiol Anim Nutr

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“…Maiorka (2002) descreve que pintainhos originados de matrizes velhas apresentam trato digestório mais desenvolvido no momento da eclosão, o que pode melhorar o aproveitamento e adaptação a alimentação exógena como também pode apresentar um melhor desempenho destes animais (HUDSON et al, 2004). Também em matrizes foi observado que pintainhos originados de matrizes mais velhas apresentaram maior consumo de ração por serem mais pesados que aqueles oriundos de fêmeas mais jovens (ALMEIDA et al, 2006). Proudfoot, Hulan e McCrae (1982), trabalhando com matrizes, também verificaram melhor conversão alimentar para pintainhos provenientes de ovos maiores.…”

Section: Discussionunclassified

Influência da idade dos reprodutores de codornas de postura na reprodução, na qualidade de ovos e na morfologia dos órgãos genitais

Carneiro

Santos

Murakami³

et al. 2014

Sem. Ci. Agr.

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ResumoA interação espermatozóide-ovo foi analisada durante a sua vida reprodutiva, em codornas de postura acasaladas com machos de diferentes idades (Coturnix coturnix sp.). O delineamento experimental foi inteiramente casualizado, em esquema fatorial 4 x 4 (idade das fêmeas x idade dos machos de codorna, 80,160,240 e 390 dias), com 10 repetições e 6 aves por unidade experimental, na proporção duas fêmeas para um macho. Foram avaliados variáveis de qualidade e produção de ovos, fertilidade, eclodibilidade e mortalidade embrionária na incubação e desempenho e qualidade dos ovos da progênie nas fêmeas oriundas da incubação. A idade dos machos não apresentou efeito significativo para nenhuma das variáveis estudadas. A idade das fêmeas teve efeito significativo para postura das matrizes, efeito quadrático (P<0,05) do número de espermatozóides/mm 2 da camada perivitelínica sobre o disco germinativo, em função da idade das fêmeas, com redução desse número ao longo da idade. A idade das fêmeas não teve efeito no peso do ovo, na espessura da casca, na percentagem de casca e de gema e na unidade Haugh. Já para a porcentagem de postura, houve efeito quadrático. As variáveis de incubação avaliadas de peso do pintainho, fertilidade, eclodibilidade e mortalidade, não apresentaram diferença quando analisados em relação à idade dos machos e fêmeas, assim como a qualidade dos ovos e desempenho da progênie resultante. A morfometria dos órgãos genitais de machos e fêmeas não apresentou diferença em função da idade das aves. Machos e fêmeas de codornas de postura mantêm habilidade reprodutiva até 56 semanas. A idade dos machos não exerceu efeito sobre os parâmetros reprodutivos e a utilização de machos mais jovens com fêmeas mais velhas não resultou em melhoras reprodutivas. Palavras-chave: Camada perivitelínica, fertilidade, eclodibilidade, oviduto, testículo AbstractThe sperm-egg interaction was investigated during their reproductive life, in laying quails mated with males of different ages (Coturnix coturnix sp.). The experimental design was completely randomized in factorial scheme 4 x 4 (age of the females of age x male quail, 80,160,240 and 390 days), with 10 replicates and six birds each, in proportion to two females for a male. The results showed that there was a quadratic effect (P <0.05) the amount of sperm trapped in the vitelline membrane of the germinal disc, depending on the age of the females, with a reduction of this number over the old. The age of the

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“…According to Almeida et al (2006), the lower rate of egg hatching among older breeders can be explained by the poorer quality of the shell, which results in a high rate of embryo mortality.…”

Section: T (°C)mentioning

confidence: 99%

Effect of breeder age and storage conditions of Japanese quail eggs on hatchability, quail neonate quality, and Bursa of Fabricius characteristics

et al. 2017

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-Two experiments were conducted to evaluate combinations of different storage periods and temperature of hatching eggs of breeder quails in two stages of the production cycle (24 and 43 weeks) on hatchability, quail neonate quality, and Bursa of Fabricius characteristics. In each experiment, a total of 1.050 Japanese quail eggs were incubated in a randomized block design in a factorial arrangement of 2 × 5 × 2, with two breeder ages (24 and 43 weeks), five storage periods (one, three, six, nine, and twelve days), and two storage temperatures (28 and 14 °C), totaling 20 treatments with 52 eggs each. Quantitative data were subjected to ANOVA and means were compared by Tukey's test. Qualitative data were subjected to Friedman's test. Polynomial regression analysis was performed in relation to the storage period of the eggs. Hatchability of 43-week-old breeders worsened as the storage period increased at 28 °C, while at 14 °C, hatchability was not affected. Yolk-free body weight was influenced only by storage period; therefore, the group stored for 12 days had the lowest yolk-free body weight. Twelve days of storage reduced the absorption of yolk residue and physical quality score and also affected neonate quail immunity. Fertile eggs from Japanese quails that are destined for incubation should be stored at 14 °C to maintain physical and immunological quality of the progeny. Moreover, eggs from older breeders originate lower-quality quails when eggs are not stored in a refrigerated environment.Key Words: Coturnix coturnix japonica, fertile egg, flock age, immunity, quail production

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Bone mineral density of tibae and femura of broiler breeders: growth, development and production

Cited by 8 publications

References 13 publications

Alpha‐lipoic acid improves the reproduction performance of breeder hens during the late egg‐laying period

Alpha‐lipoic acid improves the reproduction performance of breeder hens during the late egg‐laying period

Influência da idade dos reprodutores de codornas de postura na reprodução, na qualidade de ovos e na morfologia dos órgãos genitais

Effect of breeder age and storage conditions of Japanese quail eggs on hatchability, quail neonate quality, and Bursa of Fabricius characteristics

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