Division of Pig Growth Stages According to Body Component Variation using Computer Vision
Division of Pig Growth Stages According to Body Component Variation using Computer Vision
Chen Shi, Jianlong Zhang and Guanghui Teng*
ABSTRACT
The body measurements of pigs are the important part of precision livestock farming that closely related to the growth characteristics and traits. It is significant for monitoring and understanding the pig growth at different stages effectively. In this study, the experiment adopted a management and data acquisition system based on LabVIEW, which automatically acquired and recorded the body measurements and body weights of 30 pigs during 90-day grower-finisher stage. Three body ratios between two each body measurements showed that the body length and width were the major parts of growth and development of pigs during 70 to 110 days old. The growth stages of grower and finisher were divided by three normalized body ratios. The exact agreement with two experienced observers reached 80% and 85% on body ratio between height at hip and hip width, 75% and 80% on body ratio between body length and height at hip, 50% and 45% on body ratio between body length and hip width, respectively. The statistical analysis of the body ratios could be used for dividing the different growth stages that replaces the body weight or growth day method. It also can provide a scientific foundation for precision feeding and automatic management of individual pig that could be applied in the real farm.
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June 2020
Vol. 52, Iss. 3, Pages 825-1224
