Comparison of steer feedlot performance and carcass trait uniformly by method of sorting

Kansas Agricultural Experiment Station Research Reports, Dec 1990

Long yearling steers (n=997) of various biological types from two origins were used to test performance and carcass trait uniformity of unsorted cattle, visually sorted cattle, and cattle sorted by ultrasound and hip height. No significant differences (P> .05) in initial backfat uniformity were identified between sorted and unsorted groups; however, very little variation existed across all treatments (.17±.033 in.). Initial backfat had positive linear relationships with initial weight and carcass backfat and negative linear relationships with days on feed and daily gain (P<.05). These data indicate a reliable measurement of initial backfat could be useful for predicting days on feed and/or carcass backfat in long yearling steers, but economic usefulness will depend upon the variability of the cattle and the method of grouping.

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Comparison of steer feedlot performance and carcass trait uniformly by method of sorting

Comparison of steer feedlot performance and carcass trait uniformly by method of sorting P.L. Houghton D.D. Simms James J. Higgins Follow this and additional works at: http://newprairiepress.org/kaesrr Part of the Other Animal Sciences Commons Recommended Citation Houghton, P.L.; Simms, D.D.; and Higgins, James J. (1990) "Comparison of steer feedlot performance and carcass trait uniformly by method of sorting," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 1. https://doi.org/10.4148/2378-5977.2250 - Thi s report is brought to you for free and open access by New Prairie Press. It has been accepted for inclusion in Kansas Agricultural Experiment Station Research Reports by an authorized administrator of New Prairie Press. Copyright 1990 Kansas State University Agricultural Experiment Station and Cooperative Extension Service. Contents of this publication may be freely reproduced for educational purposes. All other rights reserved. Brand names appearing in this publication are for product identification purposes only. K-State Research and Extension is an equal opportunity provider and employer. Comparison of steer feedlot performance and carcass trait uniformly by method of sorting Abstract Long yearling steers (n=997) of various biological types from two origins were used to test performance and carcass trait uniformity of unsorted cattle, visually sorted cattle, and cattle sorted by ultrasound and hip height. No significant differences (P> .05) in initial backfat uniformity were identified between sorted and unsorted groups; however, very little variation existed across all treatments (.17±.033 in.). Initial backfat had positive linear relationships with initial weight and carcass backfat and negative linear relationships with days on feed and daily gain (P<.05). The se data indicate a reliable measurement of initial backfat could be useful for predicting days on feed and/or carcass backfat in long yearling steers, but economic usefulness will depend upon the variability of the cattle and the method of grouping. Creative Commons License Thi s work is licensed under a Creative Commons Attribution 4.0 License. Thi s Research Report article is available in Kansas Agricultural Experiment Station Research Reports: http://newprairiepress.org/ kaesrr/vol0/iss1/847


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P.L. Houghton, D.D. Simms, James J. Higgins. Comparison of steer feedlot performance and carcass trait uniformly by method of sorting, Kansas Agricultural Experiment Station Research Reports, 1990,