Digital surface area assessment of broiler chickens

Engenharia Agrícola

Tadayuki Yanagi Júnior¹  Éberson Silva²  Roberto A. Braga Júnior²  Marcos A. Lopes²  Flávio A. Damasceno²  Gleice C. De A. E Silva² 

[1] ,UFLA Departamento de Engenharia Lavras MG

关键词: image analysis;    moiré technique;    poultry;    análise de imagem;    técnica de moiré;    avicultura;   

DOI  :  10.1590/S0100-69162011000300007

来源: SciELO

【 摘 要 】

Surface area (SA) of poultry is an important parameter for heat and mass transfer calculations. Optical approaches, such as the moiré technique (MT), are non-destructive, result in accuracy and speed gains, and preserve the object integrity. The objective of this research was to develop and validate a new protocol for estimating the surface area (SA) of broiler chickens based on the MT. Sixty-six Ross breed broiler chickens (twenty-seven male, thirty-nine female, ages spanning all growth phases) were used in this study. The dimensions (length, width and height) and body mass of randomly selected broiler chickens were evaluated in the laboratory. Chickens were illuminated by a light source, and grids were projected onto the chickens to allow their shape to be determined and recorded. Next, the skin and feathers of the chickens were removed to allow SA to be determined by conventional means. These measurements were then used for calibration and validation. The MT for image analysis was a reliable means of evaluating the three-dimensional shape and SA of broiler chickens. This technique, which is neither invasive nor destructive, is a good alternative to the conventional destructive methods.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License