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dja

Mortality of Djallonke Lambs in Senegal


Description

Field trial to assess the effect of ewes deworming (prevention of gastro-intestinal parasitism) on the mortality of their offspring (age < 1 year). This data set is extracted from a large database on small ruminants production and health in Senegal (Lancelot et al., 1998). Data were collected in a sample of herds in Kolda (Upper Casamance, Senegal) during a multi-site survey (Faugère et al., 1992). See also the references below for a presentation of the follow-up survey (Faugère and Faugère, 1986) and a description of the farming systems (Faugère et al., 1990).

Usage

data(dja)

Format

A data frame with 21 observations on the following 4 variables.

group

a factor with 2 levels: CTRL and TREAT, indicating the treatment.

village

a factor indicating the village of the herd.

herd

a factor indicating the herd.

n

a numeric vector: the number of animals exposed to mortality.

trisk

a numeric vector: the exposition time to mortality (in year).

y

a numeric vector: the number of deaths.

References

Faugère, O., Faugère, B., 1986. Suivi de troupeaux et contrôle des performances individuelles des petits ruminants en milieu traditionnel africain. Aspects méthodologiques. Rev. Elev. Méd. vét. Pays trop., 39 (1): 29-40.
Faugère, O., Dockès, A.-C., Perrot, C., Faugère, B., 1990. L'élevage traditionnel des petits ruminants au Sénégal. I. Pratiques de conduite et d'exploitation des animaux chez les éleveurs de la région de Kolda. Revue Elev. Méd. vét. Pays trop. 43: 249-259.
Faugère, O., Tillard, E., Faugère, B., 1992. Prophylaxie chez les petits ruminants au Sénégal : régionalisation d'une politique nationale de protection sanitaire. In: B. Rey, S. H. B. Lebbie, L. Reynolds (Ed.), First biennial conference of the African Small Ruminant Research Network, ILCA, 1990, ILRAD, Nairobi, pp. 307-314.
Lancelot, R., Faye, B., Juanès, X., Ndiaye, M., Pérochon, L., Tillard, E., 1998. La base de données BAOBAB: un outil pour modéliser la production et la santé des petits ruminants dans les systèmes d'élevage traditionnels au Sénégal. Revue Elev. Méd. vét. Pays trop., 51 (2): 135-146.


aod

Analysis of Overdispersed Data

v1.3.1
GPL (>= 2)
Authors
Matthieu Lesnoff <matthieu.lesnoff@cirad.fr> and Renaud Lancelot <renaud.lancelot@cirad.fr>
Initial release
2012-04-10

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