Elevation of the tailhead in this cow is the result of chronic cystic follicular degeneration which has led to chronic relaxation of the pelvic ligaments. These cows show more frequent behavioral estrus than normally expected, with varying periods of anestrus. In the vernacular they are called buller cows. They can be of help in a heat detection program, however their behavior is not consistent. The elevated tailhead is sometimes referred to as the sterility hump.

Cow with nymphomania

Credit: Drost M (personal collection)

Digital Credit: Maarten Drost

Publisher: None

Rights: Name must appear as a credit whenever the image is used -

Description: Elevation of the tailhead in this cow is the result of chronic cystic follicular degeneration which has led to chronic relaxation of the pelvic ligaments. These cows show more frequent behavioral estrus than normally expected, with varying periods of anestrus. In the vernacular they are called buller cows. They can be of help in a heat detection program, however their behavior is not consistent. The elevated tailhead is sometimes referred to as the sterility hump.

Resolution: 300x206

File Size: 16.37 KB

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Cow with nymphomania

Credit: Drost M (personal collection)

Digital Credit: Maarten Drost

Publisher: None