Comparative trials carried out by New Zealand Department of Lands and Survey confirm that had this not been used as the basis of selection these problems could have been solved. This is a positive indication of efficiency. The single most important economic trait in the cattle industry is that of fertility. That ability of a cow to give birth to a live calf each year of her productive life. The first calf should arrive at the cow's second birthday and a subsequent calf every 12 months.
Fertility is a genetic fact that can be transmitted.
Those that own them swear by them. A small polled head and average birth weight between 70-75 lbs. is normal. Most people can easily understand the importance of this trait but the economic implications sometimes escape them. Excellent Milking Ability. Good question, and there is a logical answer.