Mechanical vibrations in the transport of hatching eggs and the losses caused in the hatch and quality of broiler chicks

  • Ana Carolina Donofre | acdonofre@usp.br Environment Research Unit, Department of Biosystem Engineering, University of São Paulo, Brazil.
  • Iran José Oliveira da Silva Environment Research Unit, Department of Biosystem Engineering, University of São Paulo, Brazil.
  • Aérica Cirqueira Nazareno Environment Research Unit, Department of Biosystem Engineering, University of São Paulo, Brazil.
  • Iuri Emmanuel de Paula Ferreira Center of Natural Sciences, Federal University of São Carlos, Brazil.

Abstract

Many factors present in eggs’ transportation from incubator to growing confinements can damage their integrity and, consequently, the results of the incubation. This study aimed to evaluate whether the intensity and duration of exposures of hatching eggs to mechanical vibrations were capable of affecting the hatch and the quality of broiler chicks. Four treatments, determined by two intensities of vibrations and two durations of exposures were evaluated and compared with a control group in a randomised design in blocks with four repetitions. The vibrations were applied by a mechanical shaker before incubation. Then the eggs were incubated and as the following responses were evaluated: hatchability, the type of embryonic mortality, the quality of the birds and the total of losses. The analyses were carried out by a binomial regression model, with application of the Wald test at 5% significance level. The results showed that the exposure of eggs to mechanical vibrations harmfully affects the hatchability and reduces the ratio (percentage) of high quality chicks. Highest vibration level together with longer duration of exposure resulted in worst hatchability and losses. It is argued that the mechanical vibrations are potentially damaging and should be regarded as an important factor in the management of hatching eggs.

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Published
2017-02-17
Section
Original Articles
Keywords:
Broiler production, hatchability, hatchery, resultant acceleration.
Statistics
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How to Cite
Donofre, A. C., Oliveira da Silva, I. J., Cirqueira Nazareno, A., & de Paula Ferreira, I. E. (2017). Mechanical vibrations in the transport of hatching eggs and the losses caused in the hatch and quality of broiler chicks. Journal of Agricultural Engineering, 48(1), 36-41. https://doi.org/10.4081/jae.2017.593