Deer Health
The Wildlife Health Program is administered by the State Wildlife Veterinarian, Assistant State Wildlife
Veterinarian, and Wildlife Health Biologist. The program conducts disease investigations when sick,
injured, or deceased animals are observed by Department personnel or reported by the public. Herd
health collections and managed hunts provide samples for statewide serosurveillance of white-tailed
deer. The program conducts diagnostic testing through six laboratories which include: 1) Southeastern
Cooperative Wildlife Disease Study (SCWDS) at the University of Georgia, 2) Louisiana Animal Disease
Diagnostic Laboratory (LADDL) at Louisiana State University School of Veterinary Medicine, 3) Texas
A&M Veterinary Medical Diagnostic Laboratory (TVMDL), 4) Mississippi Veterinary Research and
Diagnostic Laboratory (MVRDL) at Mississippi State University College of Veterinary Medicine, 5) USGS
National Wildlife Heath Center (NWHC), and 6) USDA APHIS National Veterinary Services Laboratory
(NVSL).
In 2022, Louisiana became the 29
th
state to detect Chronic Wasting Disease (CWD). CWD is a
neurodegenerative disease that is transmissible and 100% fatal to deer. After the intitial positive
detection, the LDWF CWD response plan was activated. Mitigation measures established through
regulation, include the prohibition of bait and deer carcass export restrictions. These measures are
prescribed for the CWD Control Area, which consists of the immediate area of the detection as well as a
buffer area around the known positives. Major roadways at a minimum distance of 25 miles from a
positive are used to dileneate the boundary. Currently, Tensas Parish and portions of Concordia,
Franklin and Madison parishes are included in the CWD control area. The control area expansion into
northeast Concordia occurred in 2023 due to the recent detections 5 miles south of the index case.
The 2022 – 23 deer season was the first season in which baiting was prohibited for the CWD Control
Area. The parishes within the CWD Control Area reported a ten year high in harvest. In the case of
Tensas Parish, the highest reported harvest since tagging began was recorded. Population management
is critical within areas of known detection, as disease transmission rates may be amplified under higher
deer densities.
LDWF collected 2,370 CWD samples in 2022-23 (16,141 since 2002). Eleven of the 2,370 samples were
positive for CWD. All 12 CWD detections from the last two seasons have been collected in Tensas
Parish. The bulk of samples were collected directly from hunters, additional samples were gathered
from deer hit by vehicles, taxidermists, processors, and symptomatic deer reported by hunters. In
addition, an effort to incentize sampling through a prize promotion was sponsored for the 2
nd
consecutive year by the South Louisiana Branch of the National Deer Association. A $1,000 gift card was
given to the hunter with the winning entry. A second gift card for $500 was issued to the winning
taxidermist. Eligibility included the submission of a CWD sample from a Louisiana buck with a 10 inch or
greater inside spread. The goal was to increase the number of 2.5 year and older bucks sampled. Adult
bucks are priority samples based on their tendency for higher prevalence rates where the disease is
found. In addition to the efforts mentioned, 7 drop off coolers were placed within the CWD control
area. Hunters submitted 240 deer heads for diagnoistic sampling at the drop off sites. Due the use