Naima Sahraoui - Academia.edu (original) (raw)
Papers by Naima Sahraoui
Histopathological investigation and risk factors of Coccidiosis in camels (Camelus dromedarius), Algeria
Emirates journal of food and agriculture, Mar 28, 2024
Coccidiosis in dromedaries is an intestinal protozoan infection caused by apicomplexan parasites ... more Coccidiosis in dromedaries is an intestinal protozoan infection caused by apicomplexan parasites belonging to the genus Eimeria. A prospective examination was conducted at two slaughterhouses in southern Algeria. The primary objective of this investigation was to ascertain the prevalence of intestinal parasites in camels, elucidate the associated microscopic lesions, and identify the risk factors contributing to this infestation. In pursuit of this, we procured four segments of the intestines from 31 dromedarieas that appeared healthy and displayed no symptoms. Subsequently, these samples were collected, preserved, subjected to routine processing, and subsequently stained with haematoxylin and eosin (H&E). Intestinal parasitic infection showed an incidence rate of 45.16% (14 out of 31). Specifically, two types of parasites were discerned in the intestinal specimens through microscopic examination, namely Eimeria (41.93%; 13 out of 31) (p-value = 0.046) and Taenia (3.22%; 1 out of 31) (p = 0.001). Eimeria cameli was observed in the ceacum (41.93%; 13 out of 31), jejunum (12.90%; 4 out of 31), and in one instance in the duodenum (3.22%; 1 out of 31). Furthermore, numerous development stages of coccidia were identified, including gamonts, schizonts and oocysts. Deep microscopic lesions attributed to Eimeria cameli were detected, such as enteritis, eosinophilic infiltration and inflammation. In addition, associated risk factors were identified. This study has furnished valuable insights into parasitic infestations affecting dromedaries, particularly Eimeria cameli. The molecular studies are needed to delineate the diverse variations within Eimeria strains. Effective parasite control strategies specific to dromedary camels need to be developed.
Effect of Azolla on zootechnical and biochemical parameters of broiler chicken
Animal - science proceedings
Revue d'élevage et de médecine vétérinaire des pays tropicaux, Dec 4, 2023
Camels are very hardy animals, which can tolerate a dry climate and extreme temperatures and weat... more Camels are very hardy animals, which can tolerate a dry climate and extreme temperatures and weather (Sibtain et al., 2010). They can depend on scarce natural forage to cover their nutritional needs because they browse on a wide variety of plants, like thorny bushes, halophytes, and aromatic types, which domestic ruminants mostly avoid (Iqbal and Kha, 2001). Although camels are polygastric animals, they are often referred to as pseudo-ruminants due to some anatomical and physiological differences in their gastric structures when compared to those of true ruminants. In contrast to the latter's four-chamber stomachs, camel stomachs have only three chambers with no omasum (Von Engelhardt et al., 2007). In addition to this anatomical difference, camels retain feed particles in the forestomach for a much longer time than other ruminants (Abbas et al., 1995). Indeed, camels are better adapted to the digestion of poor-quality forage than other ruminants living under the same conditions (Robinson et al., 2006), while cattle have a higher grazing rate and ruminating efficiency than camels (Khana and Zaied, 1991). Forestomaches are rich in microorganisms, the population of which is mainly influenced by the animal's diet (Nguyen Cong et al., 2019). The rumen microbiome is dominated by obligate anaerobic microorganisms originating from all three taxonomic domains of life, i.e. Archaea, Bacteria, and Eukarya. Bacteria are the most abundant microbes in the foregut of ruminant animals, with approximately 10 11 cells/ml and over 200 species (Gharechahi and Salekdeh, 2018). Few studies have investigated the characteristics of rumen microbiota in camels, especially in natural environments. This study was undertaken to assess the microbial composition and bacterial diversity traits of rumen samples obtained from Algerian camels under pasture conditions. ■ MATERIALS AND METHODS Animals The samples were obtained from animals delivered to the abattoir of Tamanrasset for slaughter during the cold months of November and December 2019. The camels originated from arid natural pastures in southern Algeria (Tamanrasset is 1,919 km from Algiers). Animals there are free ranging, feed exclusively on hard wild weeds such as those belonging to the genera Astragallus, Atriplex, Artemisia, and are not supplemented with concentrates. A total of 25 rumen contents ■ SANTE ANIMALE ET EPIDEMIOLOGIE 1 Revue d'élevage et de médecine vétérinaire des pays tropicaux, 2023, 76 : 37010
Pathogens, Jun 24, 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
La tuberculose chez les petits ruminants en Algérie
Bulletin of animal health and production in Africa, 2012
Première caractérisation moléculaire de souches de Mycobacterium bovis et Mycobacterium caprae par spoligotypage en Algérie
Les 89 souches du complexe Mycobacterium tuberculosis (CMT) ont été caractérisées par spoligotypa... more Les 89 souches du complexe Mycobacterium tuberculosis (CMT) ont été caractérisées par spoligotypage : 23 spoligotypes différents ont été obtenus dont deux prédominants (SB0120 et SB0121) représentant respectivement (39%) et (21%) des isolats. De ces 23 spoligotypes identifiés, 18 spoligotypes ont déjà été cités et cinq spoligotypes y compris le spoligotype de la souche M. caprae n’avaient jusqu’à présent jamais été décrits.
Journal of Veterinary Medical Research
Developing a process to extract essential oils by microwave
Innovative Process of Essential Oil Extraction: Steam Distillation Assisted by Microwave
Progress in Clean Energy, Volume 1, 2015
This study focuses on the extraction of essential oil of Thymus pallescens, using a new extractio... more This study focuses on the extraction of essential oil of Thymus pallescens, using a new extraction process developed in our laboratory: steam distillation assisted by microwaves also called microwave steam distillation (MSD). This process is a combination of traditional techniques, namely, a steam distillation (SD) and an innovative technology, a microwave heating. Indeed, heating by microwaves helped initiate and build the mass and heat transfer inside the plant matrices outward which results in a considerable reduction in the extraction time. Kinetic study of extraction, optimization of operating conditions, and antioxidant activity of essential oil were conducted. The selected operating parameters are the steam flow rate and the microwave heating power.
Journal of Chromatography A, 2008
Steam distillation (SD) is routinely used by analysts for the isolation of essential oils from he... more Steam distillation (SD) is routinely used by analysts for the isolation of essential oils from herbs, flowers and spices prior to gas chromatographic analysis. In this work, a new process design and operation for an improved microwave steam distillation (MSD) of essential oils from aromatic natural products was developed. To demonstrate its feasibility, MSD was compared with the conventional technique, SD, for the analysis of volatile compounds from dry lavender flowers (Lavandula angustifolia Mill., Lamiaceae). Essential oils isolated by MSD were quantitatively (yield) and qualitatively (aromatic profile) similar to those obtained by SD, but MSD was better than SD in terms of rapidity (6 min versus 30 min for lavender flowers), thereby allowing substantial savings of costs in terms of time and energy. Lavender flowers treated by MSD and SD were observed by scanning electron microscopy. Micrographs provide evidence of more rapid opening of essential oil glands treated by MSD, in contrast to conventional SD.
Mini-reviews
Abstract: Extrusion cooking is commonly used to produce dry pet foods. As a process involving hea... more Abstract: Extrusion cooking is commonly used to produce dry pet foods. As a process involving heat treatment, extrusion cooking can have both beneficial and detrimental effects on the nutritional quality of the product. Desirable effects of extrusion comprise increase in palatability, destruction of undesirable nutritionally active factors and improvement in digestibility and utilisation of proteins and starch. Undesirable effects of extrusion include reduction of protein quality due to eg the Maillard reaction, decrease in palatability and ...
Cross-sectional Study on Bovine Tuberculosis Based on Post Mortem and Bacteriological Examination in Four Abattoirs of Northern Algeria: Slaughterhouses as Source of Data for Disease Control
Acta Scientific Microbiology
Journal of Bacteriology, 2009
We have identified a clonal complex of Mycobacterium bovis present at high frequency in cattle in... more We have identified a clonal complex of Mycobacterium bovis present at high frequency in cattle in population samples from several sub-Saharan west-central African countries. This closely related group of bacteria is defined by a specific chromosomal deletion (RDAf1) and can be identified by the absence of spacer 30 in the standard spoligotype typing scheme. We have named this group of strains the African 1 (Af1) clonal complex and have defined the spoligotype signature of this clonal complex as being the same as the M. bovis BCG vaccine strain but with the deletion of spacer 30. Strains of the Af1 clonal complex were found at high frequency in population samples of M. bovis from cattle in Mali, Cameroon, Nigeria, and Chad, and using a combination of variable-number tandem repeat typing and spoligotyping, we show that the population of M. bovis in each of these countries is distinct, suggesting that the recent mixing of strains between countries is not common in this area of Africa. ...
Synchronisation des chaleurs a l’aide des eponges vaginales associees aux differentes doses d’eCG chez les brebis
L’introduction et la generalisation rapide de la synchronisation des chaleurs en Algerie pour l’e... more L’introduction et la generalisation rapide de la synchronisation des chaleurs en Algerie pour l’espece ovine a susciter beaucoup d’interrogations qui meritent d’etre levees sur le terrain, afin de proposer un schema de synchronisation adequat a nos races locales. Pour cette raison, il importe de donner plus de considerations et d’attention a cette technique, et particulierement a la dose d’equine chorionic gonadotropin (eCG) qui suit le traitement progestatif. Notre objectif est d’ameliorer les performances de reproduction des brebis de race croisee Ouled-Djellal X Rumbi par l’utilisation de traitement hormonal a base de progestatif associe a differentes doses d’eCG (0, 350, 500 et 700 UI). Pour cela, nous avons mis en place un protocole experimental sur un effectif de 40 brebis reparties en 4 lots homogenes. Le taux de fertilite n’est pas influence significativement par les differentes doses d’eCG, bien que nous notons une amelioration pour les lots ayant une dose de 350 et de 500 ...
Investigation About the Bovine Tuberculosis In Two Algerian Slaughterhouses
African Journal of …, 2008
African Journal of Agricultural Research Vol. 3 (11), pp. 775-778, November, 2008 Available onlin... more African Journal of Agricultural Research Vol. 3 (11), pp. 775-778, November, 2008 Available online at http://www.academicjournals.org/AJAR ISSN 1991-637X © 2008 Academic Journals ... Investigation about the bovine tuberculosis in two ... Sahraoui Naima1, 2, Muller ...
The dromedary camel is able to produce meat and milk in arid conditions and its production is app... more The dromedary camel is able to produce meat and milk in arid conditions and its production is appreciated by the autochthon population. The aim of this study was to determine the selenium concentration in 61 Longissimus dorsi muscle samples representing three Algerian camel breeds (Tergui, Sahraoui or Naili breeds), the age of the selected camels ranged between 8 months and 13 years old. The muscle samples were collected from the slaughterhouse of Ouargla (South East Algeria) representing 41 males and 20 female. The average content of selenium was 0.216 mg.kg -1 of wet tissue, which is higher than values currently reported in most ruminants. The level of Se was not influenced by age and sex. However, Tergui breed contained significantly higher selenium than other breeds, which may be due to diet composition intake. In conclusion, the meat from camels in Algeria is a good source of selenium, assessing its nutritional interest for human.
Broad diversity of Mycobacterium tuberculosis complex strains isolated from humans and cattle in Northern Algeria suggests a zoonotic transmission cycle
PLOS Neglected Tropical Diseases
Mycobacterium tuberculosis complex (MTBC) comprises closely related species responsible for human... more Mycobacterium tuberculosis complex (MTBC) comprises closely related species responsible for human and animal tuberculosis (TB). Efficient species determination is useful for epidemiological purposes, especially for the elucidation of the zoonotic contribution. In Algeria, data on MTBC genotypes are largely unknown. In this study, we aimed to investigate the occurrence and diversity of MTBC genotypes causing human and bovine TB in Northern Algeria. During a two-year sampling period (2017–2019) in two regions of Northern Algeria, we observed an overall prevalence of 6.5% of tuberculosis (TB) among slaughtered cattle, which is higher than previous Algerian data yet comparable to neighboring countries. A total of 296 Mycobacterium tuberculosis complex (MTBC) isolates were genotyped by spoligotyping: 181 from tissues with TB-like lesions collected from 181 cattle carcasses and 115 from TB patients. In human isolates, we identified 107 M. tuberculosis, seven M. bovis and one “M. pinnipedi...
Revue Marocaine des Sciences Agronomiques et Vétérinaires, 2015
En Algerie, la coccidiose constitue l’une des principales contraintes qui entrave le developpemen... more En Algerie, la coccidiose constitue l’une des principales contraintes qui entrave le developpement de la production avicole et cause d’enormes pertes economiques, en l’occurrence l’augmentation du taux de mortalite et l’usage abusif des antibiotiques. Ces derniers ont des effets nefastes sur la sante humaine et animale. Ainsi, des alternatives ont vu le jour, en particulier l’utilisation des extraits de plantes. La presente etude, mise en place en octobre 2013, a ete menee dans un elevage comportant cinq cent poussins d’un jour appartenant a la souche de type chair Hubbard F15. Les poussins ont ete suivis de leur naissance jusqu’au 52eme jour. Ces animaux, d’un poids homogene de 93 g et de sexes melanges, provenaient du meme couvoir et ont subi les memes conditions d’ambiance. Les animaux du premier lot, identifie comme «Lot temoin», recevaient un aliment exempt de tout additif mais une eau additionnee d’antibiotiques. Les animaux du deuxieme lot, identifie comme «Lot experimental»,...
Characterization of fatty acids camel meat in Algeria
Nutrition Clinique Et Metabolisme, 2014
Plant extract effect of Yucca schidigera on oocyst shedding in broilers
Histopathological investigation and risk factors of Coccidiosis in camels (Camelus dromedarius), Algeria
Emirates journal of food and agriculture, Mar 28, 2024
Coccidiosis in dromedaries is an intestinal protozoan infection caused by apicomplexan parasites ... more Coccidiosis in dromedaries is an intestinal protozoan infection caused by apicomplexan parasites belonging to the genus Eimeria. A prospective examination was conducted at two slaughterhouses in southern Algeria. The primary objective of this investigation was to ascertain the prevalence of intestinal parasites in camels, elucidate the associated microscopic lesions, and identify the risk factors contributing to this infestation. In pursuit of this, we procured four segments of the intestines from 31 dromedarieas that appeared healthy and displayed no symptoms. Subsequently, these samples were collected, preserved, subjected to routine processing, and subsequently stained with haematoxylin and eosin (H&E). Intestinal parasitic infection showed an incidence rate of 45.16% (14 out of 31). Specifically, two types of parasites were discerned in the intestinal specimens through microscopic examination, namely Eimeria (41.93%; 13 out of 31) (p-value = 0.046) and Taenia (3.22%; 1 out of 31) (p = 0.001). Eimeria cameli was observed in the ceacum (41.93%; 13 out of 31), jejunum (12.90%; 4 out of 31), and in one instance in the duodenum (3.22%; 1 out of 31). Furthermore, numerous development stages of coccidia were identified, including gamonts, schizonts and oocysts. Deep microscopic lesions attributed to Eimeria cameli were detected, such as enteritis, eosinophilic infiltration and inflammation. In addition, associated risk factors were identified. This study has furnished valuable insights into parasitic infestations affecting dromedaries, particularly Eimeria cameli. The molecular studies are needed to delineate the diverse variations within Eimeria strains. Effective parasite control strategies specific to dromedary camels need to be developed.
Effect of Azolla on zootechnical and biochemical parameters of broiler chicken
Animal - science proceedings
Revue d'élevage et de médecine vétérinaire des pays tropicaux, Dec 4, 2023
Camels are very hardy animals, which can tolerate a dry climate and extreme temperatures and weat... more Camels are very hardy animals, which can tolerate a dry climate and extreme temperatures and weather (Sibtain et al., 2010). They can depend on scarce natural forage to cover their nutritional needs because they browse on a wide variety of plants, like thorny bushes, halophytes, and aromatic types, which domestic ruminants mostly avoid (Iqbal and Kha, 2001). Although camels are polygastric animals, they are often referred to as pseudo-ruminants due to some anatomical and physiological differences in their gastric structures when compared to those of true ruminants. In contrast to the latter's four-chamber stomachs, camel stomachs have only three chambers with no omasum (Von Engelhardt et al., 2007). In addition to this anatomical difference, camels retain feed particles in the forestomach for a much longer time than other ruminants (Abbas et al., 1995). Indeed, camels are better adapted to the digestion of poor-quality forage than other ruminants living under the same conditions (Robinson et al., 2006), while cattle have a higher grazing rate and ruminating efficiency than camels (Khana and Zaied, 1991). Forestomaches are rich in microorganisms, the population of which is mainly influenced by the animal's diet (Nguyen Cong et al., 2019). The rumen microbiome is dominated by obligate anaerobic microorganisms originating from all three taxonomic domains of life, i.e. Archaea, Bacteria, and Eukarya. Bacteria are the most abundant microbes in the foregut of ruminant animals, with approximately 10 11 cells/ml and over 200 species (Gharechahi and Salekdeh, 2018). Few studies have investigated the characteristics of rumen microbiota in camels, especially in natural environments. This study was undertaken to assess the microbial composition and bacterial diversity traits of rumen samples obtained from Algerian camels under pasture conditions. ■ MATERIALS AND METHODS Animals The samples were obtained from animals delivered to the abattoir of Tamanrasset for slaughter during the cold months of November and December 2019. The camels originated from arid natural pastures in southern Algeria (Tamanrasset is 1,919 km from Algiers). Animals there are free ranging, feed exclusively on hard wild weeds such as those belonging to the genera Astragallus, Atriplex, Artemisia, and are not supplemented with concentrates. A total of 25 rumen contents ■ SANTE ANIMALE ET EPIDEMIOLOGIE 1 Revue d'élevage et de médecine vétérinaire des pays tropicaux, 2023, 76 : 37010
Pathogens, Jun 24, 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
La tuberculose chez les petits ruminants en Algérie
Bulletin of animal health and production in Africa, 2012
Première caractérisation moléculaire de souches de Mycobacterium bovis et Mycobacterium caprae par spoligotypage en Algérie
Les 89 souches du complexe Mycobacterium tuberculosis (CMT) ont été caractérisées par spoligotypa... more Les 89 souches du complexe Mycobacterium tuberculosis (CMT) ont été caractérisées par spoligotypage : 23 spoligotypes différents ont été obtenus dont deux prédominants (SB0120 et SB0121) représentant respectivement (39%) et (21%) des isolats. De ces 23 spoligotypes identifiés, 18 spoligotypes ont déjà été cités et cinq spoligotypes y compris le spoligotype de la souche M. caprae n’avaient jusqu’à présent jamais été décrits.
Journal of Veterinary Medical Research
Developing a process to extract essential oils by microwave
Innovative Process of Essential Oil Extraction: Steam Distillation Assisted by Microwave
Progress in Clean Energy, Volume 1, 2015
This study focuses on the extraction of essential oil of Thymus pallescens, using a new extractio... more This study focuses on the extraction of essential oil of Thymus pallescens, using a new extraction process developed in our laboratory: steam distillation assisted by microwaves also called microwave steam distillation (MSD). This process is a combination of traditional techniques, namely, a steam distillation (SD) and an innovative technology, a microwave heating. Indeed, heating by microwaves helped initiate and build the mass and heat transfer inside the plant matrices outward which results in a considerable reduction in the extraction time. Kinetic study of extraction, optimization of operating conditions, and antioxidant activity of essential oil were conducted. The selected operating parameters are the steam flow rate and the microwave heating power.
Journal of Chromatography A, 2008
Steam distillation (SD) is routinely used by analysts for the isolation of essential oils from he... more Steam distillation (SD) is routinely used by analysts for the isolation of essential oils from herbs, flowers and spices prior to gas chromatographic analysis. In this work, a new process design and operation for an improved microwave steam distillation (MSD) of essential oils from aromatic natural products was developed. To demonstrate its feasibility, MSD was compared with the conventional technique, SD, for the analysis of volatile compounds from dry lavender flowers (Lavandula angustifolia Mill., Lamiaceae). Essential oils isolated by MSD were quantitatively (yield) and qualitatively (aromatic profile) similar to those obtained by SD, but MSD was better than SD in terms of rapidity (6 min versus 30 min for lavender flowers), thereby allowing substantial savings of costs in terms of time and energy. Lavender flowers treated by MSD and SD were observed by scanning electron microscopy. Micrographs provide evidence of more rapid opening of essential oil glands treated by MSD, in contrast to conventional SD.
Mini-reviews
Abstract: Extrusion cooking is commonly used to produce dry pet foods. As a process involving hea... more Abstract: Extrusion cooking is commonly used to produce dry pet foods. As a process involving heat treatment, extrusion cooking can have both beneficial and detrimental effects on the nutritional quality of the product. Desirable effects of extrusion comprise increase in palatability, destruction of undesirable nutritionally active factors and improvement in digestibility and utilisation of proteins and starch. Undesirable effects of extrusion include reduction of protein quality due to eg the Maillard reaction, decrease in palatability and ...
Cross-sectional Study on Bovine Tuberculosis Based on Post Mortem and Bacteriological Examination in Four Abattoirs of Northern Algeria: Slaughterhouses as Source of Data for Disease Control
Acta Scientific Microbiology
Journal of Bacteriology, 2009
We have identified a clonal complex of Mycobacterium bovis present at high frequency in cattle in... more We have identified a clonal complex of Mycobacterium bovis present at high frequency in cattle in population samples from several sub-Saharan west-central African countries. This closely related group of bacteria is defined by a specific chromosomal deletion (RDAf1) and can be identified by the absence of spacer 30 in the standard spoligotype typing scheme. We have named this group of strains the African 1 (Af1) clonal complex and have defined the spoligotype signature of this clonal complex as being the same as the M. bovis BCG vaccine strain but with the deletion of spacer 30. Strains of the Af1 clonal complex were found at high frequency in population samples of M. bovis from cattle in Mali, Cameroon, Nigeria, and Chad, and using a combination of variable-number tandem repeat typing and spoligotyping, we show that the population of M. bovis in each of these countries is distinct, suggesting that the recent mixing of strains between countries is not common in this area of Africa. ...
Synchronisation des chaleurs a l’aide des eponges vaginales associees aux differentes doses d’eCG chez les brebis
L’introduction et la generalisation rapide de la synchronisation des chaleurs en Algerie pour l’e... more L’introduction et la generalisation rapide de la synchronisation des chaleurs en Algerie pour l’espece ovine a susciter beaucoup d’interrogations qui meritent d’etre levees sur le terrain, afin de proposer un schema de synchronisation adequat a nos races locales. Pour cette raison, il importe de donner plus de considerations et d’attention a cette technique, et particulierement a la dose d’equine chorionic gonadotropin (eCG) qui suit le traitement progestatif. Notre objectif est d’ameliorer les performances de reproduction des brebis de race croisee Ouled-Djellal X Rumbi par l’utilisation de traitement hormonal a base de progestatif associe a differentes doses d’eCG (0, 350, 500 et 700 UI). Pour cela, nous avons mis en place un protocole experimental sur un effectif de 40 brebis reparties en 4 lots homogenes. Le taux de fertilite n’est pas influence significativement par les differentes doses d’eCG, bien que nous notons une amelioration pour les lots ayant une dose de 350 et de 500 ...
Investigation About the Bovine Tuberculosis In Two Algerian Slaughterhouses
African Journal of …, 2008
African Journal of Agricultural Research Vol. 3 (11), pp. 775-778, November, 2008 Available onlin... more African Journal of Agricultural Research Vol. 3 (11), pp. 775-778, November, 2008 Available online at http://www.academicjournals.org/AJAR ISSN 1991-637X © 2008 Academic Journals ... Investigation about the bovine tuberculosis in two ... Sahraoui Naima1, 2, Muller ...
The dromedary camel is able to produce meat and milk in arid conditions and its production is app... more The dromedary camel is able to produce meat and milk in arid conditions and its production is appreciated by the autochthon population. The aim of this study was to determine the selenium concentration in 61 Longissimus dorsi muscle samples representing three Algerian camel breeds (Tergui, Sahraoui or Naili breeds), the age of the selected camels ranged between 8 months and 13 years old. The muscle samples were collected from the slaughterhouse of Ouargla (South East Algeria) representing 41 males and 20 female. The average content of selenium was 0.216 mg.kg -1 of wet tissue, which is higher than values currently reported in most ruminants. The level of Se was not influenced by age and sex. However, Tergui breed contained significantly higher selenium than other breeds, which may be due to diet composition intake. In conclusion, the meat from camels in Algeria is a good source of selenium, assessing its nutritional interest for human.
Broad diversity of Mycobacterium tuberculosis complex strains isolated from humans and cattle in Northern Algeria suggests a zoonotic transmission cycle
PLOS Neglected Tropical Diseases
Mycobacterium tuberculosis complex (MTBC) comprises closely related species responsible for human... more Mycobacterium tuberculosis complex (MTBC) comprises closely related species responsible for human and animal tuberculosis (TB). Efficient species determination is useful for epidemiological purposes, especially for the elucidation of the zoonotic contribution. In Algeria, data on MTBC genotypes are largely unknown. In this study, we aimed to investigate the occurrence and diversity of MTBC genotypes causing human and bovine TB in Northern Algeria. During a two-year sampling period (2017–2019) in two regions of Northern Algeria, we observed an overall prevalence of 6.5% of tuberculosis (TB) among slaughtered cattle, which is higher than previous Algerian data yet comparable to neighboring countries. A total of 296 Mycobacterium tuberculosis complex (MTBC) isolates were genotyped by spoligotyping: 181 from tissues with TB-like lesions collected from 181 cattle carcasses and 115 from TB patients. In human isolates, we identified 107 M. tuberculosis, seven M. bovis and one “M. pinnipedi...
Revue Marocaine des Sciences Agronomiques et Vétérinaires, 2015
En Algerie, la coccidiose constitue l’une des principales contraintes qui entrave le developpemen... more En Algerie, la coccidiose constitue l’une des principales contraintes qui entrave le developpement de la production avicole et cause d’enormes pertes economiques, en l’occurrence l’augmentation du taux de mortalite et l’usage abusif des antibiotiques. Ces derniers ont des effets nefastes sur la sante humaine et animale. Ainsi, des alternatives ont vu le jour, en particulier l’utilisation des extraits de plantes. La presente etude, mise en place en octobre 2013, a ete menee dans un elevage comportant cinq cent poussins d’un jour appartenant a la souche de type chair Hubbard F15. Les poussins ont ete suivis de leur naissance jusqu’au 52eme jour. Ces animaux, d’un poids homogene de 93 g et de sexes melanges, provenaient du meme couvoir et ont subi les memes conditions d’ambiance. Les animaux du premier lot, identifie comme «Lot temoin», recevaient un aliment exempt de tout additif mais une eau additionnee d’antibiotiques. Les animaux du deuxieme lot, identifie comme «Lot experimental»,...
Characterization of fatty acids camel meat in Algeria
Nutrition Clinique Et Metabolisme, 2014
Plant extract effect of Yucca schidigera on oocyst shedding in broilers