Relationship between bull & cow fertility
Testes in males and ovaries in females are stimulated by a number of common hormones. Hence it is logic that there is a correlation between fertility traits of a bull and the reproductive potential of the daughter he sire.
The scrotal and testicular conformation of bulls is directly related to the quality of the udders of the daughters he sires. Vice versa, the dam’s udder is a reflection of the scrotal makeup of her sons