Search
Author
Title
Vol.
Issue
Year
1st Page

Journal of Animal Science Abstract - 2011 and 2012 Early Careers Achievement Awards

2011 AND 2012 EARLY CAREERS ACHIEVEMENT AWARDS: Improving the production, environmental, and economic efficiency of the stocker cattle industry in the southeastern United States12

 

This article in JAS

  1. Vol. 91 No. 6, p. 2456-2466
     
    Received: Sept 18, 2012
    Accepted: Nov 19, 2012
    Published: November 25, 2014


    3 Corresponding author(s): pbeck@uaex.edu
 View
 Download
 Share

doi:10.2527/jas.2012-5873
  1. P. A. Beck 3,
  2. M. Anders,
  3. B. Watkins,
  4. S. A. Gunter,
  5. D. Hubbell§ and
  6. M. S. Gadberry#
  1. University of Arkansas Division of Agriculture, Southwest Research and Extension Center, Hope 71801
    University of Arkansas Division of Agriculture, Rice Research and Extension Center, Stuttgart 72160
    USDA ARS, Southern Plains Range Research Station, Woodward, OK 73801
    University of Arkansas Division of Agriculture, Livestock and Forestry Research Station, Batesville 72501
    University of Arkansas Cooperative Extension Service, Little Rock 72204

Abstract

Grazing forages on small-grain fields can be a profitable “second crop” for grain producers and an opportunity for cow–calf producers to retain ownership of weaned calves. The increasing costs of conventional tillage and movement of soil nutrients into surface water creates a need for more sustainable production practices to be incorporated by producers into wheat pasture production systems. Research at the Livestock and Forestry Research Station near Batesville, AR, and the Southwest Research and Extension Center near Hope, AR, has been conducted over a 9-yr span to characterize the impacts of pasture systems on forage production, animal performance, soil quality, water runoff, and the economics associated with the stocker cattle enterprises. Gains of growing cattle grazing nontoxic endophyte-infected tall fescue and small-grain forages can be increased by 80 and 150%, respectively, compared with grazing Bermuda grass or toxic endophyte-infected tall fescue. Producers grazing spring-calving cowherds can use these improved forages to accelerate stocker performance when retaining calves in the fall and improve net returns by 99% with winter annual or nontoxic tall fescue production systems compared with Bermuda grass or toxic tall fescue. Rainfall simulation of small grain pastures indicates that runoff volume and nutrient load does not differ between conventionally tilled fields and no-till fields in the spring before tillage when soil surface cover is similar. In the fall after tillage, however, conventionally tilled fields had 4 times greater runoff; hence, there was 1.9 times greater N runoff and 3.2 times greater P runoff in conventionally tilled fields compared with no-till. Total natural rainfall runoff from conventionally tilled wheat fields were 2 times greater than from no-till fields with 25 mm rainfall events yet were 4 times greater with 62-mm rainfall events. Soil analysis shows that soil aggregate content was greater in no-till compared with conventional till, indicating greater soil porosity, improved water infiltration rate, and reduced erositivity of soil. Carbon concentration in no-till soils was 50% greater than conventional tillage after 9 yr. These experiments show that production systems can be designed that maintain livestock production, increase soil quality, reduce nutrient discharge, and promote improved economic returns.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © 2013. American Society of Animal Science