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Volume 15, Number 5—May 2009

Research

A Case–Control Study on the Origin of Atypical Scrapie in Sheep, France

Alexandre FediaevskyComments to Author , Eric Morignat, Christian Ducrot, and Didier Calavas
Author affiliations: Agence Française de Sécurité Sanitaire des Aliments, Lyon, France (A. Fediaevsky, E. Morignat, D. Calavas); Institut National de la Recherche Agronomique, Clermont-Theix, France (A. Fediaevsky, C, Ducrot)

Main Article

Table 4

Univariate analyses of feeding component variables during the specified period and conditional to C0 for atypical scrapie in sheep, France*

VariableControlsCasesOdds ratiop value
Lambs fed milk replacers in C0
No68420.50.02
Yes
157
53


Corn silage in C0
No195900.40.04
Yes
30
5


Beet root in C0
No185860.50.06
Yes
40
9


Straw in C0
No77231.60.08
Yes
148
72


Oil cake in C0
No164730.80.47
Yes
61
22


Compound feed in C0
No78281.30.37
Yes
147
67


Grass silage in C0
No195771.50.20
Yes
30
18


Grain in C0
No45181.10.83
Yes
180
77


Molasses in C0
No212881.30.59
Yes
13
7


Vitamin and mineral supplements in C0
No102480.80.40
Yes
123
47


Salt licks (pure salt) during C0–C2006
No721.50.62
Yes
218
93


Salt licks with minerals during C0–C2006
No46280.60.08
Yes
179
67


Other ruminants feed during C0–C0+2
No205900.60.27
Yes
20
5


Other ruminants minerals during C0–C0+2
No203851.10.84
Yes
22
10


Pig feed during C0–C0+2
No209890.90.80
Yes
16
6


Poultry feed during C0–C0+2
No193801.10.71
Yes3215

*C0, birth cohort assuming that in each flock all animals born during the same birth campaign (defined from July 1 of year n – 1 to June 30 of year n) shared the same exposure; C2006, birth campaign 2006; C0–C0+2, period between C0 and the 2 subsequent reproduction campaigns.

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