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Google圖書搜尋
A Methodology for Identifying Sources of Indirect Costs of Predation Control
SH. Anderson
LJ. Jahnke
LL. McDonald
C. Phillips
其他書名
A Study of Wyoming Sheep Producers
出版
ASTM International
, 1988
URL
http://books.google.com.hk/books?id=w5p5zgEACAAJ&hl=&source=gbs_api
註釋
Indirect costs of predation on livestock are defined to be those out-of-pocket costs, including costs incurred in attempts to reduce predation, that are in addition to the direct loss of marketable animals. A methodology based on personal interview is presented to assess most indirect costs of predation on sheep. In this study, producers are stratified by numbers of sheep owned and location of operation within Wyoming with a simple random sample of producers selected in each stratum. Recommendations are given for interview procedures and minimum sample sizes because predator control activities and costs vary substantially among producers.
