Efeito do período e temperatura de armazenamento de ovos férteis sobre o rendimento de incubação e características de qualidade de codornas neonatas

Araújo, Itallo Conrado Sousa de; Mesquita, Mariana Alves; Andrade, María Auxiliadora; Castejon, Fernanda Vieira; Café, Marcos Barcellos; Leandro, Nadja Susana Mogyca

doi:10.1590/1678-4162-8012

Cited by 8 publications

(10 citation statements)

References 17 publications

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“…Os valores médios de peso de ovo estão abaixo dos encontrados por Mori et al (17) , que em estudo com quatro grupos genéticos de codornas verificaram média de 13,12g para peso de ovos. Ainda, de acordo com Araújo et al (3) , o peso do ovo incubável é fundamental para o peso inicial da codorna, pois ovos mais pesados geram codornas com maior peso ao nascimento, e isso pode refletir no desempenho inicial das codornas. Do mesmo modo Carneiro et al (18) , verificaram diferença entre peso do ovo incubável de matrizes de codornas de postura com diferentes pesos e idades.…”

Section: Resultsunclassified

“…De acordo com Albino & Neme (2) , as codornas iniciam a postura por volta de seis a sete semanas e o período de postura segue até que as aves atinjam cerca de 60 semanas. Araújo et al (3) que apesar do crescente mercado para os ovos de codornas existe uma limitação em termos de disponibilidade de aves neonatas para substituição de plantéis de aves que cessam a postura.…”

Section: Introductionunclassified

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Aspectos Reprodutivos E Desempenho De Diferentes Linhagens De Matrizes De Codornas Japonesas

et al. 2019

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The objective was to evaluate the performance and reproductive parameters of different genetics groups of Japanese quails with different initial weights. The experimental design was completely randomized, with a factorial 3 x 2 (three strains (UEM1, UEM2 and Commercial (COM)) and two weight classes (light and heavy), totaling six treatments. Was used with eight replications, totaling 48 plots. Each plot contained eight birds (two males and six females), with a total of 384 quails. The COM line presented higher live weight at six weeks of age, being UEM 1 and UEM 2 similar to each other. For age at first egg, the COM group equated EMU 1, with EMU 2 being later. For the variable age at 50% of egg production, the COM strain was earlier than the others. No effect of quail weight was observed on the age of the first egg. There was no interaction effect between strain and initial weight of the birds for any of the reproductive performance. Also, it can be observed that there was no difference between the genetic groups or initial body weight for egg production, when considered the period from six to 26 weeks of age. There was no difference between the genetic groups for feed intake during the 20-week period studied and there was no effect of the initial weight of production on this variable. For the results of the feed conversion index kg/eggs, it can be observed that the best results were presented by the groups of the EMU 1 and EMU 2 strains. It was possible to conclude that genetic improvement of Japanese laying quails requires better adjusts and that an unimproved commercial strain may present similar results to the improved lineages.

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Section: Resultsunclassified

Section: Introductionunclassified

Aspectos Reprodutivos E Desempenho De Diferentes Linhagens De Matrizes De Codornas Japonesas

et al. 2019

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“…A evaporação da água do ovo é um processo contínuo, tendo início no momento da postura e não cessando até que esteja completamente desidratado. A velocidade da perda de peso é acelerada em altas temperaturas (19) e retardada por alta umidade relativa (75 a 80%) (20) .…”

Section: Resultsunclassified

QUALIDADE FÍSICA E BACTERIOLÓGICA DE OVOS OPACOS DE CODORNAS SANITIZADOS, REFRIGERADOS E CONTAMINADOS EXPERIMENTALMENTE PORSalmonella enterica SER. TYPHIMURIUM

et al. 2016

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Resumo Objetivou-se estudar a qualidade física, química e microbiológica de ovos de codornas contaminados artificialmente com Salmonella entericaser. Typhimurium, sanitizados e armazenados a diferentes temperaturas (5 e 25 ºC), durante 27 dias. Foram utilizados 768 ovos com cascas opacas e peso médio de 11g. O delineamento foi inteiramente casualizado em esquema fatorial 2x2x2 (contaminação x sanitização x refrigeração) com seis repetições e um ovo por parcela. Os ovos foram contaminados pelo manuseio com 1,5 x 105unidade formadoras de colônias (UFCs) e, de acordo com os tratamentos, foram sanitizados com solução com 5 ppm de Cl. Os dados foram submetidos à análise de variância e teste t. A contaminação bacteriana prejudicou o peso do ovo, uH, índice de gema e de albume e pH de gema e de albume, a partir de 18 dias de armazenamento. O tempo de estocagem dos ovos e a temperatura de armazenamento influenciaram a qualidade interna dos ovos de codornas em todas as variáveis estudadas. A pior qualidade interna foi observada em ovos armazenados na temperatura de 25 ºC. A sanitização e a refrigeração reduziram o crescimento daSalmonella nos ovos contaminados. Ovos com casca opaca, quando não refrigerados, devem ser consumidos em até 18 dias após a postura.

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“…In the present study, the highest weight loss was detected in the eggs for 35 days. Araújo et al (2015), studying the effect of temperature and storage period on egg quality also observed weight reduction in eggs stored at room temperature (± 28 °C) for a long period. According Seker et al (2005), although water loss from the egg to the environment is a natural process that occurs by diffusion through the eggshell, the reduction of egg internal quality is directly associated with the loss of water and carbon dioxide during the storage period.…”

Section: Discussionmentioning

confidence: 97%

Physical-Chemical and Sensorial Quality of Eggs Coated With Copaiba Oil Biofilm and Stored At Room Temperature for Different Periods

Brasil

Cruz

Rufino

et al. 2019

Braz. J. Poult. Sci.

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The present study aimed at evaluating the effects of a coating based on copaiba oil on the quality of eggs stored for different periods. Eggs were coated with copaiba oil solutions (4, 8, 12, 16, or 20% copaiba oil) or not (control) and stored for 1, 7, 14, 21, 28 or 35 days at room temperature. The following parameters were evaluated: egg weight loss, egg components (albumen, yolk, and eggshell) relative weights, egg specific gravity, Haugh units, eggshell quality, and sensorial attributes. Eggs stored for 35 days presented the highest weight losses. Coating (20% copaíba oil solution) reduced egg weight loss up to 41.02%. Coated eggs presented better internal quality (yolk and albumen heights, specific gravity, and eggshell strength). Sensorial attributes were negatively affected by storage time (aroma and flavor), and copaiba oil solution (aroma, appearance, and flavor), with the natural odor of copaiba described by the tasters. Egg internal, external, and sensorial quality worsened with storage time. Solutions containing 16 and 20% copaiba oil can be used as a biofilm to coat eggs, preserving its internal and external quality, and may affect their sensory characteristics, and therefore, may be a viable alternative for maintaining the internal quality of eggs stored at room temperature for long periods.

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Efeito do período e temperatura de armazenamento de ovos férteis sobre o rendimento de incubação e características de qualidade de codornas neonatas

Abstract: Efeito do período e temperatura de armazenamento de ovos férteis sobre o rendimento de incubação e características de qualidade de codornas neonatas

Cited by 8 publications

References 17 publications

Aspectos Reprodutivos E Desempenho De Diferentes Linhagens De Matrizes De Codornas Japonesas

Aspectos Reprodutivos E Desempenho De Diferentes Linhagens De Matrizes De Codornas Japonesas

QUALIDADE FÍSICA E BACTERIOLÓGICA DE OVOS OPACOS DE CODORNAS SANITIZADOS, REFRIGERADOS E CONTAMINADOS EXPERIMENTALMENTE PORSalmonella enterica SER. TYPHIMURIUM

Physical-Chemical and Sensorial Quality of Eggs Coated With Copaiba Oil Biofilm and Stored At Room Temperature for Different Periods

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