Performance of Cow Evaluation System Elements in Simulated Environmental Conditions

Abstract

Animal phenotype assessment plays a crucial role in enhancing the genetic potential of domestic breeds. Currently, research is underway to digitize and automate phenotyping through optical systems, enabling the recognition and evaluation of animals’ linear parameters. A prototype of a non-contact monitoring system for livestock phenotype indicators is currently under development. The movement of animals within the model (a laboratory measuring stand) is restricted by a specially designed transparent barrier made of polyethylene terephthalate, enabling the capture of three-dimensional photographs of the animals’ exterior. To validate the suitability of glass for this purpose, laboratory tests were conducted. (Research purpose) The research aims to determine the degree of relationship between protective glass contamination and the accuracy of the optical animal recognition system. (Materials and methods) The paper outlines the specifications of the laboratory stand, facilities, and equipment used, along with the methods employed and experimental conditions. The probability of determining the degree of protective glass contamination was quantified on a scale of 0 to 1, with a value of 0.78 indicating a high likelihood of accurate determination. (Results and discussion) The findings reveal that the system for determining the linear parameters of animals can operate reliably even when the protective glass is contaminated up to 30 percent. When the contamination reaches 50 percent due to inadequate glass cleaning, the system’s ability to recognize points of interest reduces by a factor of 1.625. Furthermore, at 80 percent contamination, achieving high-quality data collection becomes unfeasible as the camera fails to recognize the object. Proper cleaning of the glass is imperative to maintain the system stability. (Conclusions) The optical system enables the recognition and evaluation of animals’ linear parameters, provided that the protective glass of the laboratory stand is contaminated by no more than 50 percent and undergoes high-quality cleaning. At lower levels of glass contamination, up to 30 percent, these estimates exhibit a 2.6-38 percent increase compared to other contamination levels.