| Impacts of increasing amounts of supplemental soybean meal on intake and digestion by beef steers and performance by beef cows consuming low-quality tallgrass-prairie forage. | |
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MedLine Citation:
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PMID: 10641858 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Two experiments were conducted to evaluate the impacts of increasing levels of supplemental soybean meal (SBM) on intake, digestion, and performance of beef cattle consuming low-quality prairie forage. In Exp. 1, ruminally fistulated beef steers (n = 20; 369 kg) were assigned to one of five treatments: control (forage only) and .08, .16, .33, and .50% BW/d of supplemental SBM (DM basis). Prairie hay (5.3% CP; 49% DIP) was offered for ad libitum consumption. Forage OM intake (FOMI) and total OM intake (TOMI) were increased (cubic, P = .01) by level of supplemental SBM, but FOMI reached a plateau when the daily level of SBM supplementation reached .16% BW. The concomitant rises in TOMI and OM digestibility (quadratic, P = .02) resulted in an increase (cubic, P = .03) in total digestible OM intake (TDOMI). In Exp. 2, spring-calving Hereford x Angus cows (n = 120; BW = 518 kg; body condition [BC] = 5.3) grazing low-quality, tall-grass-prairie forage were assigned to one of three pastures and one of eight treatments. The supplemental SBM (DM basis) was fed at .08, .12, .16, .20, .24, .32, .40, and .48% BW/d from December 2, 1996, until February 10, 1997 (beginning of the calving season). Performance seemed to reach a plateau when cows received SBM at approximately .30% BW/d. Below this level, cows lost approximately .5 unit of BC for every .1% BW decrease in the amount of supplemental SBM fed. Providing supplemental SBM is an effective means of improving forage intake, digestion, and performance of beef cattle consuming low-quality forages. |
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Authors:
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C P Mathis; R C Cochran; G L Stokka; J S Heldt; B C Woods; K C Olson |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of animal science Volume: 77 ISSN: 0021-8812 ISO Abbreviation: J. Anim. Sci. Publication Date: 1999 Dec |
Date Detail:
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Created Date: 2000-02-10 Completed Date: 2000-02-10 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 3156-62 Citation Subset: IM |
Affiliation:
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Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animal Feed* Animals Body Weight Cattle / growth & development*, metabolism Dietary Supplements Digestion* Energy Intake Female Male Pregnancy Soybeans* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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