Notice of Hearing on the Application to Use Sodium Fluoroacetate ...

sheep flocks in Utah. Tile study (tias primarily con.cerned :vi rn she
econorni cs <strong>of</strong> farm fl ock production, was conducted by psrzonal i nhrvi ~w
and included a sample <strong>of</strong> producers having from lG0 to ,500 brzading 2wes.
Coyotes were r~pcrt2d to have accountsd for 5.6 percent <strong>of</strong> the annual
.iamb crop ioss?s, including pre-docking losses, and 1.4 ~er~2?t 3i
adul t ewes
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25. Dr. Clair E. lerri:?, a retired Aninal Scientist ~orrneriy snplayed by
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the U .S. Depar~nent <strong>of</strong> Agricul t u x and a witness in this proczeding,
pres~n ted data purpo~c2dl y s howi ng a dramaxi c i ncrlzse i n 7r24a ti cn
loss rars an snecp and lambs sinca 1Y2 and the ban on Scnpound 13G.
Dr. T2rrill appeared ta ac~ribut? alnost ,he entir? r3duc~'on in
sheep inven~ory from the 57 nillion in 194 LC 30 nlllion in iS5C to I i '
przdation. He developed an index ta det2mine trznds and losses
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using percentages <strong>of</strong> death2 <strong>of</strong> lmbs minus percentages <strong>of</strong> deaths <strong>of</strong>
sheep as report2d in USCA s statistics showing inveniaries on hand
as <strong>of</strong> January 1 <strong>of</strong> each year and deaths from all caus3s f3r the
years 1940 to 1980. He found that this index was highly reiatsd co
predation losses as reported in data compiled by the U.S. Forest
Service. His calculations are based on the theory thac ltdnen predator
losses are increasing, the percentage <strong>of</strong> lamb deaths increases faster
than the percentage <strong>of</strong> sheep deaths. He concluded that lamb and
sheep deaths from predation acount for a much greater percentage <strong>of</strong>
3/ Although Dr. Terrill stated at the hearing that he represented
the Aiierican Society <strong>of</strong> Animal Science 12 not::c GT ~ t h ibppearance i
oy
that organization has been made in the proceeding.