Deer Preference for Juniper Forage and Volatile Oil Treated Foods

Schwartz, Charles C.; Regelin, Wayne L.; Nagy, Julius G.

doi:10.2307/3808357

Cited by 64 publications

(18 citation statements)

References 8 publications

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“…One-seed juniper contains phenolics (Nunez-Hernandez et al 1989) and terpenes (Utsumi et al 2006(Utsumi et al , 2009) that deter ruminant herbivory (Schwartz et al 1980a;Riddle et al 1996) because of bactericidal and toxic effects on rumen microorganisms and animal hosts (Schwartz et al 1980b;Nunez-Hernandez et al 1989;Pritz et al 1997;Riddle et al 1999). Breed and individual animal selection, manipulation of season of grazing, and use of protein supplements have all been suggested as strategies to improve juniper utilization by goats (Riddle et al 1996;Walker et al 2007).…”

Section: Introductionmentioning

confidence: 97%

One-Seed Juniper Sapling Use by Goats in Relation to Stocking Density and Mixed Grazing With Sheep

Utsumi

Cibils

Estell

et al. 2010

Rangeland Ecology & Management

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Section: Introductionmentioning

confidence: 97%

One-Seed Juniper Sapling Use by Goats in Relation to Stocking Density and Mixed Grazing With Sheep

Utsumi

Cibils

Estell

et al. 2010

Rangeland Ecology & Management

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“…Studies in North America and northern Europe have shown that terpenes and phenolic compounds in several tree species affect feeding choice by cervid species (Schwartz et al 1980;Elliott and Loudon 1987;Duncan et al 1994;Jia et al 1997;Vourc'h et al 2002), and affect the digestibility in the rumen fluids of ruminants (Palo 1985;Risenhoover et al 1985;Sunnerheim et al 1988). It has also been reported that morphological characteristics such as bark thickness and roughness are important determinants of bark stripping by deer (Gill 1992).…”

Section: Discussionmentioning

confidence: 97%

Resistance of larches to bark stripping by sika deer in Hokkaido, northern Japan

Orihashi

Hiyama

Kojima

et al. 2003

Journal of Forest Research

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Resistance of the Japanese larch (Larix kaempferi) (Lk), the Kurile larch (L. gmelinii var. japonica) (Lg), and their F 1 hybrid (Lg ϫ Lk) to bark stripping by sika deer (Cervus nippon yesoensis) were studied in a forest in Hokkaido by cafeteria tests. Several sets of logs prepared from Lk, Lg, and Lg ϫ Lk were fed to the deer. The stripped areas of logs significantly differed between the Lk/Lg set and the Lk/Lg ϫ Lk set (P Ͻ 0.05). The resistances of Lg and Lg ϫ Lk to bark stripping was stronger than Lk. This result was similar to those of previous studies on gray-sided voles and mountain hares in Hokkaido.

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“…Feeding on big sagebrush, Artemisia tridentata, which is high in terpenes, inhibits the cellulolytic activity of rumen microbes (Nagy and Tengerdy, 1968), and accordingly in high volumes it is toxic for ruminants (Schwartz et al, 1980a). Reduced food intake has been associated with plant items containing relatively high essential oil yield in the interaction of mule deer, Odocoileus hemionus, with different juniper species (Juniperus deppeana, J. osteosperma, J. scopulorum) (Schwartz et al, 1980b) or Spanish goats, Capra bircus with two juniper species (J. ashei, J. pinchotti) (Riddle et al, 1996).…”

Section: Introductionmentioning

confidence: 98%

Both Gas Chromatography and an Electronic Nose Reflect Chemical Polymorphism of Juniper Shrubs Browsed or Avoided by Sheep

et al. 2011

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Chemical polymorphism may contribute to variation in browsing damage by mammalian herbivores. Earlier, we demonstrated that essential oil concentration in juniper, Juniperus communis, was negatively associated with herbivore browsing. The aim of the present study was to characterize the volatile chemical composition of browsed and non-browsed J. communis. By using either gas chromatography with flame ionization detection (GC-FID) or an electronic nose device, we could separate sheep-browsed or non-browsed juniper shrubs by their essential oil pattern and complex odor matrix. The main components of the essential oil from J. communis were monoterpenes. We distinguished three chemotypes, dominated either by α-pinene, sabinene, or δ-3-carene. Shrubs belonging to the α-pinene- or sabinene-dominated groups were browsed, whereas all individuals with the δ-3-carene chemotype were unused by the local herbivores. The electronic nose also separated the browsed and non-browsed shrubs indicating that their odor matrix could guide sheep browsing. Responses of sheep could integrate the post-ingestive effects of plant secondary metabolites with sensory experience that stems from odor-phytotoxin interactions. Chemotype diversity could increase the survival rate in the present population of J. communis as certain shrubs could benefit from relatively better chemical protection against the herbivores.

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Deer Preference for Juniper Forage and Volatile Oil Treated Foods

Cited by 64 publications

References 8 publications

One-Seed Juniper Sapling Use by Goats in Relation to Stocking Density and Mixed Grazing With Sheep

One-Seed Juniper Sapling Use by Goats in Relation to Stocking Density and Mixed Grazing With Sheep

Resistance of larches to bark stripping by sika deer in Hokkaido, northern Japan

Both Gas Chromatography and an Electronic Nose Reflect Chemical Polymorphism of Juniper Shrubs Browsed or Avoided by Sheep

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