Presenter Information

David I. Bransby, Auburn University

Publication Date

1993

Description

With more intense commercialisation of electric fencing many production and economic advantages have been claimed for rotational grazing compared with continuous grazing. However, very little research data are available from the south-eastern USA to verify these claims, Therefore, the objective of this study was to evaluate animal performance under conditions of continuous and IO-paddock rotational grazing on cool- and warm-season pastures commonly used in this region. Three 2-year grazing experiments were conducted, one each on a mixed rye-annual ryegrass (Secale cereale-Lolium multiflorum) pasture, Coastal bermudagrass ( Cynodon hybrid) and Pensacola bahiagrass (Paspalum notatum). In each experiment continuous and I 0-paddock rotational grazing were compared at 3 stocking mies. For the rye-ryegrass experiment average daily gain was higher for continuous grazing than for rotational grazing at the low stocking rate there was no difference at the intermediate stocking rate, and at the high stocking rate it was higher for rotational grazing, However, there was no difference in maximum gain/ha between rotational and continuous grazing. On the two warm-season pasture species there was no difference in animal weight gain between rotational and continuous grazing across all stocking rates.

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Interactions of Rotational and Continuous Grazing with Stocking Rate on Warm and Cool-Season Pastures

With more intense commercialisation of electric fencing many production and economic advantages have been claimed for rotational grazing compared with continuous grazing. However, very little research data are available from the south-eastern USA to verify these claims, Therefore, the objective of this study was to evaluate animal performance under conditions of continuous and IO-paddock rotational grazing on cool- and warm-season pastures commonly used in this region. Three 2-year grazing experiments were conducted, one each on a mixed rye-annual ryegrass (Secale cereale-Lolium multiflorum) pasture, Coastal bermudagrass ( Cynodon hybrid) and Pensacola bahiagrass (Paspalum notatum). In each experiment continuous and I 0-paddock rotational grazing were compared at 3 stocking mies. For the rye-ryegrass experiment average daily gain was higher for continuous grazing than for rotational grazing at the low stocking rate there was no difference at the intermediate stocking rate, and at the high stocking rate it was higher for rotational grazing, However, there was no difference in maximum gain/ha between rotational and continuous grazing. On the two warm-season pasture species there was no difference in animal weight gain between rotational and continuous grazing across all stocking rates.