| Titre : |
Ecologie, situations temporelle et spatiale en Algérie de Mashallagia marshalli, parasite des petits ruminants. |
| Type de document : |
texte imprimé |
| Auteurs : |
Ilhem Zouyed, Auteur ; Bourhane Bentounsi, Directeur de thèse |
| Editeur : |
جامعة الإخوة منتوري قسنطينة |
| Année de publication : |
2017 |
| Note générale : |
2 copies imprimées disponibles
|
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Sciences Vétérinaires
|
| Tags : |
Marshallagia marshalli trichostrongle caillette petits ruminants climat écologie larve3 abomasum small ruminants climate ecology |
| Index. décimale : |
636 Sciences Vétérinaires |
| Résumé : |
Marshallagia marshalli, abomasum nematode of small ruminants is little known. It is
associated to steppe climate. Prevalence and seasonal intensities of strongyles abomasum and
their relations with climate were studied in 12 slaughterhouses over 4 bioclimatic areas of
eastern Algeria. The average abundance was found to low; 170 and intensities were 37% for
Marshallagia marshalli, 37% for Teladorsagia circumcincta, 16% for Trichostrongylus sp.,
5% for Haemonchus contortus, 3% for Ostertagia ostertagi and 2% for Marshallagia
occidentallis. Parasite dynamics differed between areas particularly between the sub-humid
and semi-arid thus suggesting a distinct prophylactic management.
The general linear model has demonstrated a seasonal effect in the sub-humid area for T.
circumcincta (in April and May), for M. marshalli (July - August) and (November-December)
and finally for Trichostrongylus sp. (January- February). There is no clear seasonality in the
semi-arid except for M. marshalli in December- January. All parasites were correlated to
temperature and rainfall except M. marshalli which had a negative and non-linear but rather
quadratic, suggesting an adaptation to local varied climate.
Biological and ecological studies after experimental infection with M. marshalli regained a
low fertility and prolificacy and a pre patent period longer than other trichostrongyles. The
maximum development observed under optimal conditions, the possibility of hatching at
temperatures as low as 4 ° C, the slow hatching and sensitivity of L3 desiccation suggests this
is the stage egg that is resistant.
The study of morphological and morphometric characters of the larva led to the first
description of the L3 observed in fecal culture. It is distinguished by a particularly small size
and the shortest sheath tail among the species sheep’s strongyles. By the significant presence
of M. marshalli and reported drug resistance, this parasite is doing well in Algeria; its impact
is evident on sheep farming. |
| Diplôme : |
Doctorat en sciences |
| En ligne : |
../theses/veterinaire/ZOU7051.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=10549 |
Ecologie, situations temporelle et spatiale en Algérie de Mashallagia marshalli, parasite des petits ruminants. [texte imprimé] / Ilhem Zouyed, Auteur ; Bourhane Bentounsi, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017. 2 copies imprimées disponibles
Langues : Français ( fre)
| Catégories : |
Français - Anglais
Sciences Vétérinaires
|
| Tags : |
Marshallagia marshalli trichostrongle caillette petits ruminants climat écologie larve3 abomasum small ruminants climate ecology |
| Index. décimale : |
636 Sciences Vétérinaires |
| Résumé : |
Marshallagia marshalli, abomasum nematode of small ruminants is little known. It is
associated to steppe climate. Prevalence and seasonal intensities of strongyles abomasum and
their relations with climate were studied in 12 slaughterhouses over 4 bioclimatic areas of
eastern Algeria. The average abundance was found to low; 170 and intensities were 37% for
Marshallagia marshalli, 37% for Teladorsagia circumcincta, 16% for Trichostrongylus sp.,
5% for Haemonchus contortus, 3% for Ostertagia ostertagi and 2% for Marshallagia
occidentallis. Parasite dynamics differed between areas particularly between the sub-humid
and semi-arid thus suggesting a distinct prophylactic management.
The general linear model has demonstrated a seasonal effect in the sub-humid area for T.
circumcincta (in April and May), for M. marshalli (July - August) and (November-December)
and finally for Trichostrongylus sp. (January- February). There is no clear seasonality in the
semi-arid except for M. marshalli in December- January. All parasites were correlated to
temperature and rainfall except M. marshalli which had a negative and non-linear but rather
quadratic, suggesting an adaptation to local varied climate.
Biological and ecological studies after experimental infection with M. marshalli regained a
low fertility and prolificacy and a pre patent period longer than other trichostrongyles. The
maximum development observed under optimal conditions, the possibility of hatching at
temperatures as low as 4 ° C, the slow hatching and sensitivity of L3 desiccation suggests this
is the stage egg that is resistant.
The study of morphological and morphometric characters of the larva led to the first
description of the L3 observed in fecal culture. It is distinguished by a particularly small size
and the shortest sheath tail among the species sheep’s strongyles. By the significant presence
of M. marshalli and reported drug resistance, this parasite is doing well in Algeria; its impact
is evident on sheep farming. |
| Diplôme : |
Doctorat en sciences |
| En ligne : |
../theses/veterinaire/ZOU7051.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=10549 |
|
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