Page 8 - Kaharau Angus Catalogue 2021 ebook

A BREEDPLAN tip about

scrotal circumference of bulls

The scrotal circumference of a bull provides an important indication of his genetic merit for several impor-
tant fertility traits. Increased scrotal circumference is associated with -

• Earlier age at puberty
• Increased semen production
• Improved semen quality.

Increased scrotal circumference also has a favourable relationship with female fertility, both in terms of
earlier age at puberty, earlier return to oestrous and shorter days to calving.
KAHARAUS’ SCROTALS

Kaharau bulls are renown for having impressive scrotal measurements. The scrotals on the bulls are
regularly assessed from weaners to the Sale and our policy is to cull any bulls that have small scrotals.
Kaharaus’ top sale bulls regularly have scrotals of 42 to 45 cm.

The average scrotal measurements of the Kaharau Sale Bulls have been –

2018 Sale Bulls – 42.7cm
2019 Sale Bulls – 42.4cm
2020 Sale Bulls – 43.7cm
2021 Sale Bulls – 43.13cm

And as Bruce Robertson says on page 6, “a good indicator of fertility, the scrotum should be about the
size of two Speights cans.”

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