Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: II. Four-year summary of cow-calf performance

W. K. Coblentz, K. P. Coffey, T. F. Smith, D. S. Hubbell, D. A. Scarbrough, J. B. Humphry, B. C. McGinley, J. E. Turner, J. A. Jennings, C. P. West, M. P. Popp, D. H. Hellwig, D. L. Kreider, C. F. Rosenkrans

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

A 4-yr trial was initiated in January 2000 to evaluate cow-calf performance on mixed-species pasture systems consisting of (i) endophyte-infected tall fescue (E+; Festuca arundinacea Schreb.) diluted by approximately 50% with common bermudagrass [Cynodon dactylon (L.) Pers.] and other forages; (ii) endophyte-free tall fescue (E-) overseeded into dormant common bermudagrass; and (iii) orchardgrass (OG; Dactylis glomerata L.) established under the same conditions as E-. The E- and OG pastures were grazed with either twice weekly (2W) or twice monthly (2M) rotation schedules, while pastures with E+ were grazed with 2M only. Actual weaning weights tended to he greater (P = 0.096), and age-adjusted 205-d weaning weights and average daily gain from hirth to weaning were greater (P ≤ 0.035) for calves raised on low-toxicity (E- or OG) pastures compared to those raised on E+. Over 4 yr, calves raised on low-toxicity pastures exhibited 22- and 24-kg advantages in actual and 205-d adjusted weaning weights, respectively, compared to those raised on E+. Cows grazing OG and E- pastures exhibited greater (P ≤ 0.021) body weights and body condition scores (BCS) at calving than cows grazing E+ pastures. Furthermore, reductions in body weight and BCS between calving and weaning tended to be greater (P ≤ 0.088) for cows grazing E+ pastures. Calf performance was improved consistently by these low-toxicity pasture systems, but management requirements may limit adaptation by producers.

Original languageEnglish
Pages (from-to)1929-1938
Number of pages10
JournalCrop Science
Volume46
Issue number5
DOIs
StatePublished - Sep 2006

Fingerprint Dive into the research topics of 'Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: II. Four-year summary of cow-calf performance'. Together they form a unique fingerprint.

  • Cite this

    Coblentz, W. K., Coffey, K. P., Smith, T. F., Hubbell, D. S., Scarbrough, D. A., Humphry, J. B., McGinley, B. C., Turner, J. E., Jennings, J. A., West, C. P., Popp, M. P., Hellwig, D. H., Kreider, D. L., & Rosenkrans, C. F. (2006). Using orchardgrass and endophyte-free fescue versus endophyte-infected fescue overseeded on bermudagrass for cow herds: II. Four-year summary of cow-calf performance. Crop Science, 46(5), 1929-1938. https://doi.org/10.2135/cropsci2005.11-0443