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| Araújo,Itallo Conrado Sousa de; Mesquita,Mariana Alves; Café,Marcos Barcellos; Stringhini,José Henrique; Paz,Paulo Henrique Sousa da; Noleto,Raiana Almeida; Leandro,Nadja Susana Mogyca. |
| ABSTRACT 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coturnix coturnix japonica; Fertile egg; Flock age; Immunity; Quail production. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000900731 |
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| Araújo,Itallo Conrado Sousa de; Leandro,Nadja Susana Mogyca; Mesquita,Mariana Alves; Café,Marcos Barcellos; Mello,Heloisa Helena Carvalho; Gonzales,Elisabeth. |
| ABSTRACT The objective of this study was to evaluate a technique for quantifying eggshell conductance using shell fragments from hatched eggs. Additional objectives were to calculate the correlation between eggshell conductance, porosity, and thickness and correlate these parameters with incubation data. The study design was fully randomized in a 3 × 3 factorial scheme (three egg regions - large end, equator, and narrow end - and three ages of broiler breeders – 29, 35, and 59 weeks). A total of 216 eggs were used, with 24 repetitions for each treatment. Neither conductance nor shell thickness showed any interaction with egg region. Breeder age influenced eggshell conductance, such that it was greatest in eggshells from 59-week breeders (0.323 mg day−1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertile eggs; Porosity; Shell conductance; Shell thickness. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200896 |
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