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Dr. J. Bret Taylor USDA, Agricultural Research Service United States Sheep Experiment Station, Dubois ID (208) 374-5301 [email protected]
ASI 2015: US Sheep Experiment Station Update
Terminal-sire evaluation results completed
Project leaders: D. Notter, K. Leymaster, G. Lewis, B. Woodward, M. Mousel, and ASI
Author leaders: D. Notter, M. Mousel, T. Leeds, and D. Krischten
8 consecutive publications in Journal of Animal Science.
2 supplemental publications in Sheep and Goat Research Journal
Popular press: Sheep Industry News, and the Suffolk Newsletter
Modeling post-fire shrub recovery
0 5
10 15 20 25 30 35 40 45 50
0 10 20 30 40 50 60 70 80
Sage
brus
h co
ver,
%
Time since last burn, years >70
4.2 yr = 12.3 to 16.5 yr TSLB Optimal sage grouse nesting habitat (Connelly et al., 2000)
12 yr TSLB = Double sheep-carrying Capacity (Blaisdell, 1953)
Nonantibiotic approaches for scours control
Natural Selenium-rich product development
3-year project: test novel, natural Se-rich products that enhance the long-term selenium status of sheep
Cooperators – Oregon sheep producers
– Oregon Sheep Commission
– Intermountain Farmers Association (IFA), Salt Lake, UT
Natural Selenium-rich products: On-farm testing in Oregon
*
* *
*, α = 0. 05
Needle-free vaccination: Pulse NeedleFree Systems
010000200003000040000500006000070000
0 14 28 42
Antib
ody
titer
Day
Needleless Needle
Needle-free vs. Needle-Syringe vaccination
Michelle Mousel, ADRU-Pullman (Mousel et al., 2008. J ANIM SCI 86:1468-1471)
Primary
Secondary
System Multi-use disposable
needles
Multi-use stainless needles
Single-use disposable
needles
Needle-free pneumatic
Unit Automatic
Syringe Automatic
Syringe Automatic
Syringe
NeedleFree Systems, Pulse 250
Initial cost $60 $60 $60 $2,900
Maintenance $360 $360 $360 $540
Needles $640 $1,620 $6,480 $0
CO2 gas $0 $0 $0 $360
9-yr cost $1,060 $2,040 $6,900 $3,800
Annual cost $118 $227 $767 $422
…with labor-savings 1 $190 $291 $927 $422
9-yr cumulative cost comparison
Guard dogs providing benefits other than “guarding”
Primary collaborators: Bryson Webber (now with APHIS) and Keith Weber at Idaho State University
ARS scientists: Corey Moffet, Pat Clark, and Bret Taylor
Using GPS tech, measured the effect of large guard dog (LGD) presence on grazing behavior of ewes nursing young lambs
When LGD were present, ewes grazed nearly a mile per day more than ewes grazing without guard dogs
FY15 Initiatives
Shearwell system testing will begin Wool and meat sire evaluations begin EBV development and testing for Targhee ewe-
lamb prolificacy in 2nd year of test Publishing will begin on Romanov test Sage grouse population data will be summarized
for model development Full-scale application of chlorate testing will
begin Fingers-crossed on selenium product release First matings for OPP resistance (ADRU)
