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ntroduction The red chi widespread i gest animal w
ng hen hous balism and lo of blood, sev mia and deat HIEPE et al. 20 often difficul cals. The diff proval of che but not on
armers. Silic native and d con dioxide, Kieselgur), i Crystalline si
rast, can rea particle size ( ung) in huma ine dust can ZENNER et al will probably
reatments. W an alternativ
ung‐damagin hould not o he animals, ure by the r he effective whether the biocidal mec were carried of the South ences (SWUA This study in with Cumbas he animal he Material & M An experime
o August 20 NRW, Germa
tigation o pop
cken mite n poultry ho welfare and ses. In addit oss of perfor
vere infestat th of the ani 006). The co lt due to th ficult legal s emical prod
the animal cates have lo drug‐free me as it is prese is not consi licates and t ach the alve (< 5μm) and ans during p also cause . 2009). The y intensify t Witteler's Cu e to an acti ng control only promote
but also re ed chicken m eness and t
effect of th chanisms, a out at the Westphalia AS).
vestigated t sil® Mite on ealth of layin Methods
nt was carri 017 in a "Nat
any, with an
of the imp ulation an
(Dermanyss ouses and is economic p tion to restl mance due t tion can also mals (SCHNIE
ntrol of the e lack of ap situation reg ucts in the , is uncerta ong been us ethod. The a
ent in diatom idered harm their modific oli with a su cause silico prolonged ex lung damage e current fibr the search umbasil® Mi
ve substanc method. T e the natura educe the in
mite. In orde to gain ind he preparati number of Department a University
the effect of the numbe ng hens.
ed out from turland" layi existing bir
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act of alte nd on anim
Franziska
us gallinae) one of the b roblems in l essness, can to constant l o lead to an
DER et al. 20 red bird mite pproved che garding the occupied ba ain for pou sed as an alt
amorphous s maceous ear mful to hea cations, in c ufficiently sm
sis (quartz d xposure. Qua e in laying he ronil discuss
for alternat te dust bath e‐free and l The dust b al behaviour nfestation pr er to determ dications as on is based f investigatio t of Agricult
of Applied S
f the dust b er of mites a
m October 20 ng hen farm rd mite infes
arch No
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control of h in laying
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d four comp at two comp erimental an
record a pos t up and ev on, 20 anima wo dates. Th ease of the
.08.2017. In aps were laid
eir plumage e herd with r uring the tes
stalled in ea hich were fill
ite each. Thi 1,3 kg cumb e producer.
g.1 Experimenta
esults total of 18 ent on seven ites countab e control co
rtments (Ta res and the one or two rtments at t e 1). The m imals in a t e control com
n/
the red ch g hen hus
ve
r to test t ontrol with C partments wi
partments e d control gr ssible mite re valuated at r
ls per compa he weighing
e mite pop addition, on d out, the a
and behavio regard to fea st, three dus ach of the
ed once a w s correspon basil per hen
al design
traps were n dates and le per date w ompartment able 1). Due new housing ) were found the beginnin maximum nu
rap was det mpartments
No. 8/Mar
hicken mi bandry
the effective Cumbasil® M ith 3,000 an each could b roups (cf. Fig
eduction, m regular inter artment wer took place pulation on n the dates w
nimals were our (overall ather peckin st baths wer two test co week with 25
ds to the ap n per year a
set up in e the maximu was significa ts than in t e to the col g, only a few d in the tub ng of the ex umber of m tected durin
.
rc 2019
ite on its
eness of th Mite. The bar imals each, s e used as e g. 1). In orde
ite traps wer rvals. In add re weighed o after the in n 13.07. an when the mit e assessed fo impression o g, jitteriness re additional ompartment kg Cumbasi pplication rat as declared b
each compar um number o antly higher
he test com der temper w mites (non
es in all com periment (T ites with 20
g the tests he
rn so x‐
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ly ts, l®
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Tab. 1: Overview
status num Test
Test Control Control
The counting ncrease of th
he experim ummer the rated in Fig.
rol compartm est compart be evaluated May to Augu he experime group 688 mi
Fig. 2: Evaluatio
Weighings s weights in fa o 1.93 kg, p There was no eggs and loss
ess than 1%
only 1‐2 eggs urther evalu meaningful.
only recorde performance howed a st pared to 87‐8 The evaluatio ess animals control group
ion, which w around the
our compart and there w pickled anima
w of total captu
ber of traps 18 18 18 18
g of the mite he mite pop ent, with th
mite pressu . 2, the incre ments is sign tments. Altho d in the con
ust 2017), th ental group w
ites.
on of the captu
showed sig avour of the
= 0.021 with o difference ses. Overall, and the nu s laid per day uation at co The average ed at stable
compared t trong mite 89% laying pe
on of the an with partly p after an in was mainly
cloaca. Alto tments were was only a te
als in the con
ured mites per
min. ma
0 33
0 29
0 204
0 208
e traps show pulation at th he rising te ure also incr
ease in the nificantly hig
ough three t ntrol group i he total num was 127 and
red mites over
gnificantly e experiment h n = 80 anim e in the num the losses w umber of gro y in the who ompartment e laying per level, but to the previo
infestation erformance) nimals revea destroyed p ncrease of th
shown by lo ogether, the
e more restle endency to ntrol compar
Resear
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x. media
3 1
9 0,5
4 3,5
8 5
wed a moder he beginning emperatures eased. As ill untreated co gher than in t
traps could n in the summ mber of mites d in the cont
time
higher anim tal group (1 mals per grou mber of bott were very low
ound eggs w le barn, so t
level was rformance w
showed bet ous herd, wh (92‐93% co ).
aled more re plumage in t he mite popu oss of feath
animals in ess at this ti perceive mo rtments.
rch Note
ment of Agricultu f.de/cms/forsch an
rate g of s in lus‐
on‐
the not mer s in trol
mal 1.99 up).
om w at with hat not was tter hich om‐
est‐
the ula‐
hers all me ore
Dis A j the six inc of res me pro pra mi Mi de ex be tom the ga ate ex we ch the ex cat ty red int wi en pe po inc bu no sta pro hig
Fin Wit me
Ref Hie den Auf Sch nisc Zen of D app 3.
es
ure, Soest ‐ hungsnotizen/
scussion jointly agree e farmer and x weeks the
creased very the contro sult of itchin ents were al oduct. The actical trial ite populatio ite. The re emonstrated
perimental een a change
m eggs or t e available d
ted in a furt e mite infes
amining sim elfare point o
icken mite e last four w plosive natu ting factor fo of interactio d chicken mi teraction is d
th the chick ables stable eriod. The p otential in th crease in the ut this was m ot possible t
able occupa oduction rat gh‐risk mont
nancial support tteler (Rüthen, ents of good sci
ferences
pe, T., Lucius, R., n Grundzügen de fl. Stuttgart: Pare hnieder, T., Boch, che Parasitologie nner, L., Bon, G., C Dermanyssus gall plied acarology 48
No
ed terminati d SWUAS to number of m y rapidly and
l animals ha ng. As a res
so equipped available da
clearly show on by using
sulting anim by the bett group. Whe e in the num
heir quality data. This w ther experim tation or ca ilar laying h of view. The in the contr weeks of the ure of the in
or laying hen ons with acti ite in the occ desirable wh en mite at a animal hea roduct Cum is initial tria e mite popu much more o give a sta ncy phase. F te remained hs.
t: This work w , Germany) an entific practice
Gottstein, B. (20 r Immunbiologie, y.
J.; Supperer, R., . 6. Aufl. Stuttgar Chauve, C., Nemo inae in free‐rang 8 (1‐2), S. 157–16
o. 8/Marc 2
ion of the e ook place wh mites in the d the externa
ad already ult, the con d with the Cu
ata from th ws the redu g the produ mal health
ter animal w ether there mber of laying
was not de would have ment with a an also be d hen farms fro e explosive in
rol compart e examinatio nfection. An n husbandry
ve substanc cupied barn.
hich keeps t a moderate l alth over the mbasil® Mite al, as in the
lation was a moderate. H atement abo
Fortunately, d quite low
was financed b nd was subject e.
006): Allgemeine , Diagnostik und
Bauer, C. (2006):
rt
oz, C., Lubac, S. (2 ge poultry farms.
66. DOI: 10.1007/
2019
experiment b hen in the la
control grou al appearanc suffered as
trol compar umbasil® Mit e abandone uction of th uct Cumbasi
can also b weight of th would hav g eggs or bo educable fro
to be invest more mode etermined b om an anim ncrease of th
ments durin on shows th other comp
is the difficu es against th A continuou he infestatio
evel and thu e entire layin showed th trial group a also observe
However, it out the entir
the mite re w even in th
by the compa t to the requir
Parasitologie. M Bekämpfung. 1.
Veterinärmedizi
2009): Monitorin In: Experimental /s10493‐009‐925
by st up ce a rt‐
te ed he l®
be he ve ot‐
m ti‐
er‐
by al he ng he li‐
ul‐
he us on us ng his an d, is re e‐
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ny re‐
it
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