Measure the pelvic area of all your bulling heifers.
By measuring the size of the birth canal in yearling heifers. The Pelvi-Measure is used " per-rectum" to measure the area of the pelvic or birth canal.
When done prior to the first mating season, heifers with small pelvic area or mishaped pelvic canals can be removed from the breeding program. So, with each generation you can breed for increased pelvic area.
This design is a slightly more slender construction that previous versions.
The device is made up of two aluminum arms and a scale in centimetres. The measurment scale is engraved so is resistant to wearing off.
Comes with instructions pn how to take measurements and a informative table showing the pelvic size/calf weight relationship to dystocia and bull traits.
See documentation tab for Instructions, video links and other information.
Arkansas Info on Pelvic Measurement (Download)
Arkansas Info on Pelvic Measurement. include age correction formula
Pelvi-Measure Instructions (Download)
Background Info & Instructions
Some research on Pelvic size and shape (Download)
Some research on Pelvic size and shape
Interesting, but obviously Pelvic shape and size is only one factor in dystocia (Download)
Interesting paper from Joyce back in Sask, where I interned, but obviously Pelvic shape and size is only one factor in dystocia
University of Missouri Guide on measuring cattle pelvises (Download)
University of Missouri Guide on measuring cattle pelvises
Videos Pelvic Measurement (Download)
Video links about bovine pelvic measurement