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1 November 2008 Cattle Grazing Distribution and Efficacy of Strategic Mineral Mix Placement in Tropical Brazilian Pastures
Ricardo C. D. Goulart, Moacyr Corsi, Derek W. Bailey, Silvio S. Zocchi
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Abstract

A study was conducted in Brazil to identify factors affecting grazing distribution of yearling Nelore cross heifers and to evaluate the efficacy of placement of a salt–mineral mix away from water to improve uniformity of grazing. Two pastures (25 ha and 42 ha) were evaluated for four 15-d sessions. Mineral mix was placed 590 m to 780 m from water during two sessions and at water for two sessions. Stubble heights were measured at the beginning and end of each session in 1-ha subunits of each pasture. Cattle locations were recorded on day 13 and 14 of each session by horseback observers. Heifers avoided areas with a preponderance of forbs and taller grass (P < 0.001). For the first 15 days of the study cattle avoided subunits farther from water. Thereafter, horizontal distance from water had no affect on grazing use (P > 0.10). Stubble height reduction was more uniform (P < 0.05) when the mineral mix was at water compared to away from water. In contrast, heifers spent less time farther from water when mineral mix was placed at water (P  =  0.02) based on visual observations. Strategic placement of a salt–mineral mix away from water does not appear to be a reliable tool to improve cattle grazing distribution in humid tropical pastures from 25 ha to 45 ha in size.

Ricardo C. D. Goulart, Moacyr Corsi, Derek W. Bailey, and Silvio S. Zocchi "Cattle Grazing Distribution and Efficacy of Strategic Mineral Mix Placement in Tropical Brazilian Pastures," Rangeland Ecology and Management 61(6), 656-660, (1 November 2008). https://doi.org/10.2111/08-137.1
Received: 23 May 2008; Accepted: 1 July 2008; Published: 1 November 2008
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behavior
salt
supplement
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