olstein-Friesian

Relationships of weight and height with age in hybrid Holstein-Friesian/Guzera females

F. E. Madalena, Teodoro, R. L., and Madureira, A. P., Relationships of weight and height with age in hybrid Holstein-Friesian/Guzera females, vol. 2, pp. 271-278, 2003.

Serial data on live weights, height at withers and the weight/height ratio of 263 cows (3 to 9 years old) and 196 heifers (2 to 5 years old) were studied. The animals were of six red and white Holstein-Friesian (HF)/Guzera crosses (1/4, 1/2, 5/8, 3/4, 7/8 and ≥31/32 HF-expected gene fraction). Separate analyses were performed for cows and heifers using the Proc Mixed of the SAS package.

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