Efeito do período e temperatura de armazenamento de ovos férteis sobre o rendimento de incubação e características de qualidade de codornas neonatas
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Data
2015
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Resumo
Incubation parameters and physical quality of neonate Japanese quails hatched from eggs that were
subject to different storage conditions were evaluated. The treatments consisted of a combination of
temperatures and storage periods of hatching eggs from breeder quails. The experiments were conducted
in a randomized block design in a factorial arrangement 2x5, with two storage temperatures (ambient
temperature ± 28°C and refrigerated temperature 14°C) and five storage periods (one, three, six, nine
and twelve days), totaling 10 treatments with 105 repetitions, each egg considered to be an experimental
unit. The eggs were incubated at 37.9°C with 60% of relative humidity (RH). There was a positive linear
effect between egg weight loss and storage period. Higher rates of hatching/fertile eggs were observed
for eggs stored in refrigerated conditions. A negative linear effect was observed between storage period
and hatching rate when the eggs where stored at a temperature of 28ºC. There was a negative effect for
neonate quail weight, independent of storage temperatures. The intestine length was influenced by
storage period and 12 days of storage showed the shortest intestine length. Lower scores of physical
quality were observed in quails that hatched from eggs stored in ambient temperatures during 12 days. In
this context, to improve hatching rates and physical quality of neonate quails the eggs should be stored
up to nine days at a temperature of 14°C.
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Codorna neonata, Coturnix coturnix japonica, Estocagem de ovos, Incubação, Eggs storage, Incubation, Newly hatched quail
Citação
ARAÚJO, I. C. S.; MESQUITA, M. A.; ANDRADE, M. A.; CASTEJON, F. V.; CAFÉ, M. B.; ARNHOLD, E.; LEANDRO, N. S. M. Efeito do período e temperatura de armazenamento de ovos férteis sobre o rendimento de incubação e características de qualidade de codornas neonatas. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 67, n. 6, p. 1693-1702, 2015.