عنوان

Electronic frightening devices for reducing coyote predation on domestic sheep: Efficacy under range conditions and operational use

Number

LA0bh6p32k

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Electronic frightening devices for reducing coyote predation on domestic sheep: Efficacy under range conditions and operational use

General Material Designation

[Article]

First Statement of Responsibility

Linhart, Samuel B.; Dasch, Gary J.; Johnson, Richard R.; Roberts, Jerry D.

Text of Note

A portable 12-v battery-operated coyote frightening device was developed for reducing coyote predation on sheep and evaluated on fenced pasture farm flock operations (1979-1982). In 1986, the final experimental model consisted of a PVC case, a timer, a blinking strobe light, and a warbling type siren that was activated for 7-10 seconds at about 6-7 minute intervals throughout the night. The devices were generally suspended about 2 m above the ground and were activated at dusk by a photocell and turned off about 2 hours after dawn by a timer. Here we report tests on high mountain summer sheep ranges (1982-1987), evaluation of the devices by ADC and external cooperators (1987-1990), and efforts to make the devices commercially available. On high mountain summer range, the devices reduced sheep losses on average about 60% with a mean dollar value savings of lambs of over

Date of Publication

1992

Title

Proceedings of the Vertebrate Pest Conference

Volume Number

15

Entry Element

Linhart, Samuel B.; Dasch, Gary J.; Johnson, Richard R.; Roberts, Jerry D.

Electronic name

[Article]

275578

a

Y