What Are Normal Growth Parameters for Young Morgan Horses?

Growth data from 32 years of Morgan horse records were analyzed in this study. Weights and wither heights were measured on foals every 45 days from day 145 to day 540. Weight and wither height data for males and females were pooled.

The relationships among weight, height, and day of age were determined. Prediction equations were developed for weight, height, and age. The horses in this study grew more slowly than NRC (1989) recommendations (50%) until day 462. From day 462 to day 540, the horses had average daily gains ranging from twice to three times the rates recommended by the NRC. Height at 18 months seemed to be unaffected by the average daily gain that diverged from the NRC from weaning until 18 months of age.

This report of KER’s 2003 research was published in Proceedings of the 18th Equine Nutrition and Physiology Society Symposium.

Read the entire research paper, titled Characteristics of Growth of Morgan Horses.