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1025
The 8th Revised Edition of the Nutrient Requirements of Beef Cattle: Minerals, vitamins, and water

Thursday, July 21, 2016: 10:50 AM
Grand Ballroom B/D (Salt Palace Convention Center)
Terry E. Engle , Colorado State University, Fort Collins, CO
Joel S. Caton , Department of Animal Science, North Dakota State University, Fargo, ND
Michael L. Galyean , Texas Tech University, Lubbock, TX
Luis O. Tedeschi , Texas A&M University, College Station, TX
N. A. Cole , USDA Agricultural Research Service, Bushland, TX
Clint R. Krehbiel , Oklahoma State University, Stillwater, OK
G. E. Erickson , University of Nebraska, Lincoln, NE
Karen A. Beauchemin , Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB, Canada
Ronald P. Lemenager , Purdue University, West Lafayette, IN
Joan H. Eisemann , North Carolina State University, Raleigh, NC
Audio File Recorded Presentation (mp4)
Abstract Text:

The objective of this review is to briefly discuss the updates made to the minerals, vitamins, and water sections contained in the 8th revised edition of the Nutrient Requirements of Beef Cattle publication. Relevant data for determining mineral, vitamin, and water requirements for beef cattle published since the 7th revised edition as well as recommendations from recently published NRC publications were added where appropriate. Although long identified as essential components in the diets of beef cattle and required for many biochemical reactions, the interactions among minerals, vitamins, water and metabolic processes are extremely complex. The minerals chapter provides an update of macro- and micro-mineral requirements for beef cattle and discusses factors that can affect mineral requirements as well as mineral-specific diseases that can influence beef cattle production. New information has been added relative to the role of sulfur in beef cattle production that focuses on factors affecting sulfur requirement and maximum tolerable concentrations of sulfur. Dietary cobalt requirements were increased from 0.10 to 0.15 mg Co/kg DM for all classes of beef cattle, and maximum tolerable concentrations of certain minerals were adjusted based on published data. The vitamins chapter provides an update of beef cattle vitamin nutrition, with new information regarding fat- and water-soluble vitamins. Of special note is the greater clarity that has been provided with respect to recommendations for provision of vitamin E in various production settings. The review articulates issues associated with specific deficiencies and excesses and suggests areas for additional research. New research focusing on the influence of diet type, physiological status, and stress would be useful to more accurately predict vitamin and mineral requirements of beef cattle. Of the six essential nutrient classes, water is the single most important nutrient for beef cattle. The water chapter provides an update of equations to predict water intake by beef cattle and discusses certain factors that influence water intake, including the role of water quality in beef cattle production. In Chapter 19, the water intake model includes a response surface regression to predict water requirements for different effective temperature indexes for growing and finishing beef cattle.

Keywords: beef cattle, minerals, vitamins, water

See more of: Beef cattle nutrition symposium: A look at the latest beef cattle NRC recommendations
See more of: NRC
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