Please use this identifier to cite or link to this item:

Pelvic Measurements of Heifers: A Case Study in Hawaii

File Size Format  
RES-160.PDF 6.05 MB Adobe PDF View/Open

Item Summary

Title:Pelvic Measurements of Heifers: A Case Study in Hawaii
Authors:Fukumoto, Glen K.
Bredhoff, Carl H.
Richards, H.M.
Keywords:body measurements
ease of birth
show 2 moreheifers
show less
Date Issued:Jun 1995
Publisher:University of Hawaii
Citation:Fukumoto GK, Bredhoff CH, Richards HM. 1995. Pelvic measurement of heifers: a case study in Hawaii. Honolulu (HI): University of Hawaii. 8 p. (Research Extension Series; RES-160).
Series:Research Extension Series
Abstract:Pelvic measurement (PM) can be used as a management tool in reducing the incidence and
severity of calving difficulty (dystocia) in beef cattle operations. A large majority of calving difficulties occurs in first-parity heifers. By identifying and quantifying heifers' pelvic areas, ranchers can make informed culling decisions affecting the future productivity and economic success of the cow herd. We evaluated the impact of PM-based heifer culling decisions on the
percent of calving losses at parturition. In total, 2244 long yearling heifers were measured using a Rice pelvimeter. Pelvic areas ranged from 133 to 255 cm2; heifers with pelvic area less than 187.5 cm2 were culled. Calving losses in the herd prior to PM were 7.18 ± 1.06, whereas losses after PM were 4.08 ± 0.28. Calving losses were significantly lower (P<0.05) when critical
minimum pelvic area measurements were used as culling criteria, compared to the visual culling criteria used prior to PM. In summary, the use of PM can significantly reduce the incidence of dystocia in a commercial heifer herd when combined with a sound herd health and nutrition program for heifers and the use of "calving-ease" (low birth weight) bulls.
Pages/Duration:8 pages
Rights:University of Hawaii
Appears in Collections: Research Extension Series, 1980 - 1997

Please email if you need this content in ADA-compliant format.

Items in ScholarSpace are protected by copyright, with all rights reserved, unless otherwise indicated.