Turkeys, Ascardia dissimilis, Fenbendazole and Performance

Poultry Helminthiasis
or, subtitle….
Every bird gets the worm
T.A. Yazwinski and C. A. Tucker
Department of Animal Science
University of Arkansas
Fayetteville, Arkansas 72701
yazwinsk@uark.edu

The Helminths of Poultry
Bird Helminth
“Young” chicken Ascaridia galli
“Older” chicken Heterakis gallinarum
Capillaria obsignata
Raillietina cesticillus
Choanotaenia
infundibulum
Any turkey Ascaridia dissimilis

Life Cycle of Ascaridia dissimilis
Immediately
Fecund adults
in gut contents
(30 – 85mm)
Few days
Early adults in
gut contents
(30mm)
Eggs in droppings
1 week
one month
“Infective Egg”
in litter
2 nd larvae in gut
contents (1mm)
immediately
2 weeks
3rd 4
larvae in gut
contents or wall (4mm)
1 week or ?
th larvae in gut
contents
(10mm)

A. A 2001 study we did:
3 isolates of A dissimilis (d 35-112 @ 100 E/b/d)
3 treatment groups for each isolate
• Infection and no FBZ
• Infection and d 63-69 FBZ (in feed at 16 ppm)
• Infection and d 63-69 & 91-97 FBZ (in feed at 16
ppm)
Constant feed measure & periodic weighbacks
Periodic bird weights and parasite counts
Three pens of birds with no infection

Geometric means for total worm
burdens
GM No. of nematodes
400
300
200
100
0
332
256
117
141
0
35 63 69 91 97 119
day of study
* Gravid females present
*
*
*
128
*
No FBZ

Geometric means for total worm
burdens
GM No. of nematodes
400
300
200
100
0
332
93
87*
100*
3
0
35 63 69 91 97 119
day of study
* Gravid females present
d 63-69 FBZ

Geometric means for total worm
burdens
GM No. of nematodes
400
300
200
100
0
332
93 83
3
2
0
35 63 69 91 97 119
day of study
* Gravid females present
d 63-69 & 91-97
FBZ

Performance compared to uninfected
controls – from day 35 to 63
0.00%
-0.50%
-1.00%
-1.50%
-2.00%
-2.50%
-3.00%
-3.50%
-3.10% -3.10%
ADG FE
infected birds

Performance compared to uninfected
controls – from day 63 to 91
-6.70%
-2.80%
-8.70%
ADG FE
-4.60%
infected birds
infected, FBZ at d 63-
69

Performance compared to uninfected
controls – from day 91 to 119
-3.40%
-1.90%
0.90%
ADG FE
-4.30%
-10.10% -9.50%
infected birds
infected, FBZ at d 63-
69
infected, FBZ at d 63-
69, FBZ at d 91-97

Final (day 119) bird weights compared to
uninfected, control birds
-3.20%
-2.20%
-1.30%
infected
infected, FBZ d 63-69
infected, FBZ d 63-69,
FBZ d 91-97

Some final statistics for the average bird/group
d7-119 d7-119
d119 Feed Lb feed
Group lb wt. efficiency consumption
No infections 30.4 2.76 81.8
Infections & FBZ
twice
Infections & FBZ
once
30.0 2.88 84.1
29.7 2.93 84.9
Infections only 29.4 2.97 84.4

Evaluation of fenbendazole and albendazole
in the treatment of turkey ascaridiasis as
induced from isolates obtained from 4
different sources in the USA
Yazwinski, Tucker, Perkins,
Manning & O’Berg
Department of Animal Science
University of Arkansas
Fayetteville, AR

Materials & Methods
1. Preparation of infective eggs:
turkey intestines received from slaughter plant
fecund females isolated & processed for eggs
eggs incubated at room temperature (with air) for 51 days
eggs refrigerated until used for inoculation
2. Sources of infections:
a. Indiana Purdue albendazole 10 MPK
b. N. Carolina Prestage fenbendazole 16 PPM
c. N. Carolina Goldsboro piperazine doesn’t matter
d. Ohio Cooper albendazole & piperazine

3. Study Schedule:
Materials & Methods
bird day item
0 arrival
7 1,000 eggs/bird
22 1,000 eggs/bird
39 treat
46 post
4. Treatment groups for each isolate:
GRP treatment
1 control
2 albendazole @ 5 MPK
3 fenbendazole @ 5 MPK