Grade animals in Canadian dairy cattle improvement.

Area of Science:

• Animal Science
• Genetics
• Dairy Cattle Management

Background:

• Grade dairy animals are vital for genetic evaluations in Canada.
• Accurate identification of these animals is essential for robust genetic assessments.
• A national program was initiated in 1972 to address this need.

Purpose of the Study:

• To describe the National Identification Program for grade dairy animals in Canada.
• To evaluate the program's acceptance, procedures, and utilization.
• To highlight its effectiveness in supporting genetic evaluations and milk recording.

Main Methods:

• The paper details the establishment and operational procedures of the National Identification Program.
• It discusses the program's integration with milk recording systems.
• Information on program acceptance and usage within Canada is presented.

Main Results:

• The National Identification Program has been successfully implemented across Canada.
• The program facilitates accurate identification of grade dairy animals.
• It has proven effective for use in milk recording programs.

Conclusions:

• Canada's National Identification Program is a successful and valuable initiative.
• The program significantly contributes to the genetic evaluation of dairy populations.
• Accurate identification through this program enhances the reliability of milk recording data.