Classification System

Functional conformation for increased lifetime profitability

Holstein Australia utilises the internationally-recognised Linear Evaluation Technique to provide an objective, consistent and accurate method of conformation assessment. It uses a sliding scale of 1 to 9 to measure each trait, with a score of 5 representing the intermediate position of the two biological extremes.

Professional classifiers carefully assess each trait and enter the score on a handheld computer. Several traits are objectively measured from defined reference points on the cow. The handheld computer automatically adjusts these measurements according to the cow's age, days in milk and the hours of milk in the udder.

In 2007 Holstein Australia introduced Canadian multi-breed classification software to Australia. This system compiles the 22 traits into four composite scores: Mammary System, Feet and Legs, Dairy Strength and Rump. The four composite scores are then combined to calculate an overall conformation score out of 100, with each composite weighted according to its significance in predicting productivity and longevity, and thus lifetime profitability.

Cows are then assigned a classification according to their final score:

• EX - Excellent (90+ points)
• VG - Very Good (85–89 points)
• GP - Good Plus (80–84 points)
• G - Good (75–79 points)
• F - Fair (65-74 points)

The administration of the classification scheme is supervised by the Holstein Australia Breed Development and Conformation Committee. This committee monitors trends within the breed and adjusts trait weightings for desirable or undesirable attributes.