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Research Article| Volume 28, ISSUE 4, P433-442, August 2012

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Impact of clover additions to toxic or nontoxic endophyte-infected tall fescue on animal performance and economics of stocker programs1

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      ABSTRACT

      During the autumn and spring grazing periods of 4 yr, performance of growing steers grazing six 0.8-ha toxic-endophyte-infected (TE) tall fescue [Lolium arundinaceum (Schreb.) S.J. Darbysh. = Festuca arundinacea Schreb., cv. Kentucky 31; KY31] was compared with the nontoxic-endophyte-infected (NE) tall fescue cultivars Jesup MaxQ (Pennington Seed, Madison, GA; n = 6) and Texoma MaxQII (Pennington
      Seed; n = 6) either with N applied in autumn and spring (n = 3 pastures per cultivar) or grown in combination with white clover (CL, Trifolium repens L.; cv. Regal Graze, Producer’s Choice, Woodland, CA; n = 3 pastures per cultivar). Growing steers (n = 252, BW = 228 ± 4.2 kg in the autumn and n = 343, BW 229 ± 4.8 kg in the spring) were stocked to pastures at 3.7 steers/ ha in the autumn, whereas initial stocking rates were adjusted to match forage mass each spring. Enterprise budgeting was used to compute net returns. Data in this 3 × 2 factorial arrangement were analyzed as a randomized complete block design using year as the random blocking factor. Performance of steers grazing NE was increased (P < 0.01) by 0.21 kg/d in the autumn and 0.57 kg/d in the spring compared with TE. Clovers did not affect (P = 0.46) ADG in the autumn but increased (P < 0.01) ADG in the spring by 0.2 kg/d; however, stocking rates and grazing days per hectare were decreased (P < 0.01) with CL regardless of season. Interseeding CL into KY31 pastures had no effect (P ≥ 0.41) on BW gain per hectare. Body weight gain per hectare for NE was 79% greater (P < 0.01) than KY31, and NE tall fescue with N produced 17% more (P < 0.01) BW gain per hectare than CL. Neither N nor CL affected (P = 0.41) BW gain per hectare of KY31 pastures. Although CL pastures were not as productive, net returns were increased (P < 0.01) because of reduced costs of production. Using CL resulted in similar improvements in ADG for both TE and NE pastures. Profitability of NE-based stocker programs was at a minimum 3 times greater than TE-based stocker programs in any scenario.

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      LITERATURE CITED

        • Andrae J.
        • Hill N.
        • Bouton J.
        Performance and urinary alkaloid excretion of stocker cattle grazing nontoxic or toxic tall fescue over-seeded with white clover.
        J. Anim. Sci. 2006; 84 (Abstr.): 323
        • Beck P.A.
        • Gunter S.A.
        • Lusby K.S.
        • West C.P.
        • Watkins K.B.
        • Hubbell D.S.
        Animal performance and economic comparison of novel and toxic endophyte tall fescues to cool-season annuals.
        J. Anim. Sci. 2008; 86: 2043-2055
        • Beck P.A.
        • Gunter S.A.
        • Phillips J.M.
        Evaluation of supplementation programs for growing cattle grazing tall fescue.
        Prof. Anim. Sci. 2006; 22: 325-333
        • Beck P.A.
        • Hubbell D.
        • Hess T.
        Economic implications of replacing synthetic nitrogen with clovers in cool-season annual pasture production system.
        Prof. Anim. Sci. 2012; 28: 108-114
        • Beck P.A.
        • Stewart C.B.
        • Gunter S.A.
        • Singh D.
        Novel endophyte tall fescue for stocker cattle in the Gulf Coastal Plain.
        Prof. Anim. Sci. 2009; 25: 569-579
        • BeefBasis.com
        Feeder cattle basis forecast.
        (Accessed May 4, 2012)
        • Chapman S.L.
        Soil Test Recommendations Guide.
        Univ. Arkansas Coop. Ext. Serv. AGR-9, Little Rock, AR. 1998;
        • Chestnut A.B.
        • Fribourg H.A.
        • McLaren J.B.
        • Keltner D.G.
        • Reddick B.B.
        • Carlisle R.J.
        • Smith M.C.
        Effects of Acremonium coenophialum infestation, bermudagrass, and nitrogen or clover on steers grazing tall fescue pastures.
        J. Prod. Agric. 1991; 4: 208-213
        • Coffey K.P.
        • Lomas L.W.
        • Moyer J.L.
        Grazing and subsequent feedlot performance by steers that grazed different types of fescue pasture.
        J. Prod. Agric. 1990; 3: 415-420
        • Coombs D.F.
        • Joost R.E.
        • Loyacano A.F.
        • Pitman W.D.
        Endophyte-free tall fescue potential for pastures on fertile clay loam soils in central Louisiana.
        Prof. Anim. Sci. 1999; 15: 230-237
        • Franzluebbers A.J.
        • Stuedemann J.A.
        Pasture and cattle responses to fertilization and endophyte association in the southern Piedmont.
        USA. Agric. Ecosyst. Environ. 2006; 114: 217-225
        • Gunter S.A.
        • Beck P.A.
        Novel endophyte-infected tall fescue for growing beef cattle.
        J. Anim. Sci. 2004; 82 (http://www.asas.org/ symposia/04esupp/E75.pdf) (Accessed Jan. 4, 2012)
        • Gwinn K.D.
        • Colllins-Shephard M.H.
        • Reddick B.B.
        Tissue print-immunoblot, an accurate method for the detection of Acremonium coenophialum in tall fescue(Festuca arundinacea).
        Phytopathology. 1992; 81: 747-748
        • Hoelscher J.E.
        • Laurent G.D.
        Soil survey of Independence County, Arkansas. USDA, SCS.
        Fayetteville, Arkansas Agric. Exp. Sta.1982
        • Hopkins A.A.
        • Alison M.W.
        Stand persistence and animal performance for tall fescue endophyte combinations in the south central USA.
        Agron. J. 2006; 98: 1221-1226
        • Hoveland C.S.
        Beef-forage systems for the southeastern United States.
        J. Anim. Sci. 1986; 63: 978-985
        • Hoveland C.S.
        • McCann M.A.
        • Bouton J.H.
        Influence of endophyte, alfalfa, and grazing pressure on steer performance and plant persistence of Jesup tall fescue.
        J. Prod. Agric. 1997; 10: 546-550
        • Hoveland C.S.
        • Schmidt S.P.
        • King C.C.
        • Odom J.W.
        • Clark E.M.
        • McGuire J.A.
        • Smith L.A.
        • Grimes H.W.
        • Holliman J.L.
        Steer performance and association of Acremonium coenophialum fungal endophyte on tall fescue pasture.
        Agron. J. 1983; 75: 821-824
        • Lomas L.W.
        • Moyer J.L.
        • Milliken G.A.
        Grazing and finishing performance of steers that grazed nontoxic endophyte-infected tall fescue.
        Forage and Grazinglands. 2011; https://doi.org/10.1094/FG-2011-0628-01-RS
        • McMurphy W.E.
        • Lusby K.S.
        • Smith S.C.
        • Muntz S.H.
        • Strasia C.A.
        Steer performance on tall fescue pasture.
        J. Prod. Agric. 1990; 3: 100-102
        • Nihsen M.E.
        • Piper E.L.
        • West C.P.
        • Crawford R.J.
        • Denard T.M.
        • Johnson Z.B.
        • Roberts C.A.
        • Spires D.A.
        • Rosenkrans Jr., C.F.
        Growth rate and physiology of calves grazing tall fescue inoculated with novel endophytes.
        J. Anim. Sci. 2004; 82: 878-883
        • NRC
        Nutrient Requirements of Dairy Cattle.
        in: 6th rev. ed. Natl. Acad. Press, Washington, DC1996
        • Owensby C.E.
        Modified step-point system for botanical composition and basal cover estimates.
        J. Range Manage. 1973; 26: 302-303
        • Parish J.A.
        • McCann M.A.
        • Watson R.H.
        • Paiva N.N.
        • Hoveland C.S.
        • Parks A.H.
        • Upchurch B.L.
        • Hill N.S.
        • Bouton J.H.
        Use of nonergot alkaloid-producing endophytes for alleviating tall fescue toxicosis in stocker cattle.
        J. Anim. Sci. 2003; 81: 2856-2868
        • Roberts C.
        • Andrae J.
        Tall fescue toxicosis and management.
        Crop Management. 2004; https://doi.org/10.1094/CM-2004-0427-01-MG
        • Rouquette Jr., F.M.
        • Smith G.R.
        Review: Effects of biological nitrogen fixation and nutrient cycling on stocking strategies for cow-calf and stocker programs.
        Prof. Anim. Sci. 2010; 26: 131-141
        • Stiles S.
        • Griffin T.
        Estimating Farm Machinery Costs. FSA21, Cooperative Extension Service.
        Univ. of Arkansas, Division of Agriculture, Little Rock2007
        • Thompson R.W.
        • Fribourg H.A.
        • Waller J.C.
        • Sanders W.L.
        • Reynolds J.H.
        • Phillips J.M.
        • Schmidt S.P.
        • Crawford Jr., R.J.
        • Allen V.G.
        • Faulkner D.B.
        • Hoveland C.S.
        • Fontenot J.P.
        • Carlisle R.J.
        • Hunter P.P.
        Combined analysis of tall fescue steer grazing studies in the Eastern United States.
        J. Anim. Sci. 1993; 71: 1940-1946
        • Woods W.J.
        • Essig H.W.
        • Withers Jr., F.T.
        • Watson V.H.
        • Cantrell C.E.
        Fescue, fescue-clover, and ryegrass for stocker production and profitability. Bulletin 959.
        Miss. State Univ. Agric. & Forestry Exp. Sta, Mississippi State, MS1989
        • Zhuang J.
        • Marchant M.A.
        • Schardl C.L.
        • Butler C.M.
        Economic analysis of replacing endophyte-infected with endophyte-free tall fescue pasture.
        Agron. J. 2005; 97: 711-716