Targeted grazing of one seed juniper sapling with small ruminants: Influence of stocking density and mixed grazing in summer and spring

TitleTargeted grazing of one seed juniper sapling with small ruminants: Influence of stocking density and mixed grazing in summer and spring
Publication TypeReport
Year of Publication2008
AuthorsUtsumi S.A., Cibils AF, Estell R.E., Walker J.
Series TitleWestern Region Research Project Annual Report
Pagination49
Date PublishedJune 15, 2008
ARIS Log Number232629
Keywordsannual report, one seed juniper, ruminants, saplings, western regiona
AbstractA study was conducted to examine the potential for targeted grazing of one seed juniper saplings with small ruminants. A 2x2 factorial design was used consisting of targeted grazing application with sheep and goats at two stocking densities in spring and summer. Ten female goats or five goats plus four ewes were placed on 10x10 m plots for 1 day (high density treatment) or 20x30 m plots for 6 days (low density treatment) with 2 replicates per treatment per season. Stocking rate for both treatments was 1.1 AU/ha/yr. Time spent feeding on juniper and utilization of herbaceous vegetation did not differ between seasons. Goats spent more time feeding on juniper in the high density stocking treatment vs low density, although differences were greater in mixed species plots (34.4 vs 17.7%) than in plots with only goats (28.2 vs 22.2%). Utilization of herbaceous vegetation was greater in low vs high density stocking (67.0 vs 59.6; P = 0.05), and for mixed vs single species grazing (69.8 vs56.9); P