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Accuracy, Precision, and Commercial Benefits of Growth Modelling for Broilers

Novus International, Inc., #20 Research Park Drive, St. Charles, MO 53304; Phone: (314) 926-7440; FAX: (314) 926-7405

Correspondence: H. B. Harlow

In broiler production many factors influence profitability. Growth modelling provides a mechanism through which these factors can be identified scientifically. Over the past decade advances in statistics, computer science, and broiler nutrition have allowed a number of groups to develop growth models for boiler production. This paper provides a framework to be used to evaluate the appropriateness and effectiveness of using a growth model for a particular broiler operation. Two growth models were evaluated using this technique: the Novus Growth Model IGM^TM and the ARO growth model Chickpot^TM. These models explained between 78 and 92% of the observed variation in live weight for commercial growout data. This level of explanation is sufficient for using models in many commercial decision-making applications.

Key Words: Broilers • economics • growth model • live production