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Titre : Contribution à l'étude des infections intramammaires de la vache laitiere dans l'Est algeriens Type de document : texte imprimé Auteurs : Omar Bouaziz, Auteur ; F. Smati, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2005 Importance : 235 f. Format : 30 cm. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale
01 CDLangues : Français (fre) Tags : Bactériologie Vache laitière Antibiorésistance Mammite clinique Mammite subclinique CMT Résidus d'antibiotiques Traitement au tarissement dairy cattle clinical mastitis subclinical mastitis bacteriolgy Antibiotic residues antibiotic resistance dry cow therapy Index. décimale : 636 Sciences Vétérinaires Résumé : The control of the infections intramammaires represents a paramount stake for the dairy stockbreeders. To fight against this pathology passes by a knowledge of the bacteria in causes and their epidemiology.
The present study related on the one hand, on the evaluation of the prévalence of the germs responsible for the clinical mastitis and the study of some aspects of their epidemiology in 35 dairy herds and on the other hand, to evaluate the prévalence and the etiology of the subclinic mastitis in the cows at the end of the lactation in four dairy herds. The performance of the CMT to identify subclincal mastitis at the end of the lactation was evaluated. The in vitro antimicrobial susceptibility of bacteria isolated from cow milk samples was tested. Treatment of dairy cows at drying off has been practiced.
Results obtained showed :
A strong prévalence (32,6%) of the clinical cows with clinical mastitis. The bacteriological analysis of 252 milk samples milk showed : 28,4% of Staphylococcus aureus, 21,6% of Eschérichia coli, 13,7% of Streptococcus agalactiae. The coagulase negative staphylococci with a frequency of 10,8% seem increasingly accused in the clinical mastitis.
The prévalence of the cows with subclnical mastitis at the end of the lactation is 73,6% and the quarters 40,3%. The frequency of the germs responsible for subclnical mastitis was estimated on 121 cows at the end of the lactation. Out of he 464 milk samples, 59,7% were bacteriological negative. The germs observed most often are :
Staphylococcus aureus (30,9%), coagulase negative staphylococci (25,9%), Streptococcus agalactiae (23,2%) and Eschérichia coli (15,9%).
Staphylococcus aureus is the predominant bacterial pathogen in subclinical and clinical mastitis. Environmental pathogens are not to neglect in the cause of the clinical mastits.
Moreover, this study revealed the presence of antibiotic residues in 17,1% of the 35 milk samples analyzed.
The in vitro antimicrobial susceptibility of bacteria isolated from cow milk samples showed high resistance to penicillin, ampicillin, oxacillin, tetracyclin, streptomycin and erythromycin.
During the dry period, the treatment eliminates 91% of pathogenic organism. The rate of new infections prevented is 88%.Diplôme : Doctorat En ligne : ../theses/veterinaire/BOU4260.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=1887 Contribution à l'étude des infections intramammaires de la vache laitiere dans l'Est algeriens [texte imprimé] / Omar Bouaziz, Auteur ; F. Smati, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2005 . - 235 f. ; 30 cm.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale
01 CD
Langues : Français (fre)
Tags : Bactériologie Vache laitière Antibiorésistance Mammite clinique Mammite subclinique CMT Résidus d'antibiotiques Traitement au tarissement dairy cattle clinical mastitis subclinical mastitis bacteriolgy Antibiotic residues antibiotic resistance dry cow therapy Index. décimale : 636 Sciences Vétérinaires Résumé : The control of the infections intramammaires represents a paramount stake for the dairy stockbreeders. To fight against this pathology passes by a knowledge of the bacteria in causes and their epidemiology.
The present study related on the one hand, on the evaluation of the prévalence of the germs responsible for the clinical mastitis and the study of some aspects of their epidemiology in 35 dairy herds and on the other hand, to evaluate the prévalence and the etiology of the subclinic mastitis in the cows at the end of the lactation in four dairy herds. The performance of the CMT to identify subclincal mastitis at the end of the lactation was evaluated. The in vitro antimicrobial susceptibility of bacteria isolated from cow milk samples was tested. Treatment of dairy cows at drying off has been practiced.
Results obtained showed :
A strong prévalence (32,6%) of the clinical cows with clinical mastitis. The bacteriological analysis of 252 milk samples milk showed : 28,4% of Staphylococcus aureus, 21,6% of Eschérichia coli, 13,7% of Streptococcus agalactiae. The coagulase negative staphylococci with a frequency of 10,8% seem increasingly accused in the clinical mastitis.
The prévalence of the cows with subclnical mastitis at the end of the lactation is 73,6% and the quarters 40,3%. The frequency of the germs responsible for subclnical mastitis was estimated on 121 cows at the end of the lactation. Out of he 464 milk samples, 59,7% were bacteriological negative. The germs observed most often are :
Staphylococcus aureus (30,9%), coagulase negative staphylococci (25,9%), Streptococcus agalactiae (23,2%) and Eschérichia coli (15,9%).
Staphylococcus aureus is the predominant bacterial pathogen in subclinical and clinical mastitis. Environmental pathogens are not to neglect in the cause of the clinical mastits.
Moreover, this study revealed the presence of antibiotic residues in 17,1% of the 35 milk samples analyzed.
The in vitro antimicrobial susceptibility of bacteria isolated from cow milk samples showed high resistance to penicillin, ampicillin, oxacillin, tetracyclin, streptomycin and erythromycin.
During the dry period, the treatment eliminates 91% of pathogenic organism. The rate of new infections prevented is 88%.Diplôme : Doctorat En ligne : ../theses/veterinaire/BOU4260.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=1887 Exemplaires
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Titre : L'Urée du lait en relation avec le rationnement azoté des vaches laitières Type de document : texte imprimé Auteurs : Boubakeur Safsaf, Auteur Année de publication : 2001 Importance : 91 f. Format : 30 cm. Note générale : 01 Disponible à la salle de recherche
02 Disponibles au magasin de la bibliothèque centraleLangues : Français (fre) Tags : Lait Vache laitière Rationnement azoté Urée Index. décimale : 636 Sciences Vétérinaires Diplôme : Magistère Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=1914 L'Urée du lait en relation avec le rationnement azoté des vaches laitières [texte imprimé] / Boubakeur Safsaf, Auteur . - 2001 . - 91 f. ; 30 cm.
01 Disponible à la salle de recherche
02 Disponibles au magasin de la bibliothèque centrale
Langues : Français (fre)
Tags : Lait Vache laitière Rationnement azoté Urée Index. décimale : 636 Sciences Vétérinaires Diplôme : Magistère Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=1914 Exemplaires
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Titre : Caractérisation de la composition en microconstituants des margines issues de la production oléicole et utilisabilité comme complément dans la ration chez la vache laitière Type de document : texte imprimé Auteurs : Moufida Aggoun-Arhab, Auteur ; Malika Barkat, Directeur de thèse ; Benoit Graulet, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 178 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : Composés phénoliques caroténoïdes tocophérols margines variétés d’olive procédés d’extraction composition chimique vache laitière fermentation ruminale Phenolic compounds carotenoids tocopherols olive wastewater olive variety olive milling chemical composition dairy cow ruminal fermentation ???????? ????????? ??????????? ????? ????? ??????? ?????
??????? ??????? ??????? ????????? ???? ???? ? ?????? ?? ?????Index. décimale : 640 Industrie Alimentaire Résumé : Olive oil production yields a considerable amount of wastewater, a powerful pollutant
that is currently discarded but could be considered as a potential source of valuable natural products due to its content in phenolic compounds and other natural antioxidants. The aim of this work was to valorize this by-product by ruminants. Thus, the proposed strategy was to distribute olive mill wastewater (OMWW) to dairy cows in production. This large-scale recovery required two prior steps: i) explore the variability in OMWW composition from Algerian olive oil mills considering extraction processes (traditional discontinuous press vs 3-phases centrifugal system)
and olive varieties (Azerradj, Sigoise, Chemlal) and, ii) estimate its in vitro degradability in presence of ruminale microbiota in batch systems. Whereas pH, dry or organic matter content didn't vary, there was a significant difference in ash content according to extraction process and olive variety. Carotenoid content was 2.2-fold higher with 3-phases than with press systems whereas tocopherol content was not significantly different. Among the phenolic compounds quantified, tyrosol was usually the most abundant whereas oleuropein concentrations were highly variable. Differences in phenolic compound concentrations were more pronounced between olive varieties than between processes.
The anaerobic biodegradation of OMWW reveals their extensive use by the rumen microbiota. Compared to vetch hay oats, they produce a small amount of gas. In addition, in vitro fermentation generates a low volume of methane. This allows OMWW to improve the efficiency of ruminal microbial flora in the biomass production and inhibition of methane production, a major source of energy loss for the animal. This result allows us to recommend their use as a food additive in the diet of ruminants
The distribution of OMWW in the diet of dairy cows has allowed us to define the
conditions for presentation of OMWW to dairy cows (shape, adaptation, and intake level) and their acceptability. Our results showed that the level of quantitative output (milk production) and fine composition of milk (vitamin A, E and phenolic compounds) did not seem to be affected significantly. The lack of significant differences between groups of animals is due to the fact that the OMWW distributed to the cows were not particularly rich in micro-components compared to forage.
Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/AGG6913.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10265 Caractérisation de la composition en microconstituants des margines issues de la production oléicole et utilisabilité comme complément dans la ration chez la vache laitière [texte imprimé] / Moufida Aggoun-Arhab, Auteur ; Malika Barkat, Directeur de thèse ; Benoit Graulet, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 178 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : Composés phénoliques caroténoïdes tocophérols margines variétés d’olive procédés d’extraction composition chimique vache laitière fermentation ruminale Phenolic compounds carotenoids tocopherols olive wastewater olive variety olive milling chemical composition dairy cow ruminal fermentation ???????? ????????? ??????????? ????? ????? ??????? ?????
??????? ??????? ??????? ????????? ???? ???? ? ?????? ?? ?????Index. décimale : 640 Industrie Alimentaire Résumé : Olive oil production yields a considerable amount of wastewater, a powerful pollutant
that is currently discarded but could be considered as a potential source of valuable natural products due to its content in phenolic compounds and other natural antioxidants. The aim of this work was to valorize this by-product by ruminants. Thus, the proposed strategy was to distribute olive mill wastewater (OMWW) to dairy cows in production. This large-scale recovery required two prior steps: i) explore the variability in OMWW composition from Algerian olive oil mills considering extraction processes (traditional discontinuous press vs 3-phases centrifugal system)
and olive varieties (Azerradj, Sigoise, Chemlal) and, ii) estimate its in vitro degradability in presence of ruminale microbiota in batch systems. Whereas pH, dry or organic matter content didn't vary, there was a significant difference in ash content according to extraction process and olive variety. Carotenoid content was 2.2-fold higher with 3-phases than with press systems whereas tocopherol content was not significantly different. Among the phenolic compounds quantified, tyrosol was usually the most abundant whereas oleuropein concentrations were highly variable. Differences in phenolic compound concentrations were more pronounced between olive varieties than between processes.
The anaerobic biodegradation of OMWW reveals their extensive use by the rumen microbiota. Compared to vetch hay oats, they produce a small amount of gas. In addition, in vitro fermentation generates a low volume of methane. This allows OMWW to improve the efficiency of ruminal microbial flora in the biomass production and inhibition of methane production, a major source of energy loss for the animal. This result allows us to recommend their use as a food additive in the diet of ruminants
The distribution of OMWW in the diet of dairy cows has allowed us to define the
conditions for presentation of OMWW to dairy cows (shape, adaptation, and intake level) and their acceptability. Our results showed that the level of quantitative output (milk production) and fine composition of milk (vitamin A, E and phenolic compounds) did not seem to be affected significantly. The lack of significant differences between groups of animals is due to the fact that the OMWW distributed to the cows were not particularly rich in micro-components compared to forage.
Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/AGG6913.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10265 Exemplaires
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Titre : Suivi des modifications hormonales et biochimiques chez la vache laitière au cours de la gestation et en post-partum Type de document : texte imprimé Auteurs : Selma Benhizia, Auteur ; Abdesselam Mekroud, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 137 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : profil biochimique profil hormonal vache laitière gestation post partum biochemical profile hormonal profile dairy cow pregnancy ?????? ????? ??????? ?????? ???????? ???? ???? ??? ??? ??????? Index. décimale : 636 Sciences Vétérinaires Résumé :
The aim of this study is to determinate the usual values of some biochemical and hormonal parmeters during the gestation and during the period of post partum, in order to help practitioners to use this paraclinic tool.
A second objective is to study the effect of the physiological stage on certain blood
metabolites in dairy cattle. The present research was conducted on 10 cows, of Prim Holstein breed aged from 3 to 5 years, clinically healthy, multiparous, from two dairy farms located in the wilaya of Constantine.
Samples were realized at different physiological stages (beginning, middle and end of
gestation, prepartum, a day after calving and a month post partum). These samples focused on the assay of certain biochemical parameters (urea, creatinine, albumin, total proteins, cholesterol, calcium and phosphorus) and hormonal parameters (progesterone, oestradiol, prolactin)
Uremia, albunemia, proteinemia, cholesterolemina, calcemia, progesteronemia as well as the plasmatic concentration of oestradiol varied significantly (p<0.01). The plasmatic concentrations of creatinine showed slight variations (p=0,198 > 0,01), whereas those of prolactin did not show any variation (p=0,41 >0.05).
The obtained results on the base of blood parameters (biochemical and hormonal), indicate the necessity to monitor the metabolic profile of animals, in order to determinate the nutritive state, and to take preventive measures towards health troubles to increase the productivity.
Diplôme : Magistère En ligne : ../theses/veterinaire/BEN6934.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10286 Suivi des modifications hormonales et biochimiques chez la vache laitière au cours de la gestation et en post-partum [texte imprimé] / Selma Benhizia, Auteur ; Abdesselam Mekroud, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 137 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : profil biochimique profil hormonal vache laitière gestation post partum biochemical profile hormonal profile dairy cow pregnancy ?????? ????? ??????? ?????? ???????? ???? ???? ??? ??? ??????? Index. décimale : 636 Sciences Vétérinaires Résumé :
The aim of this study is to determinate the usual values of some biochemical and hormonal parmeters during the gestation and during the period of post partum, in order to help practitioners to use this paraclinic tool.
A second objective is to study the effect of the physiological stage on certain blood
metabolites in dairy cattle. The present research was conducted on 10 cows, of Prim Holstein breed aged from 3 to 5 years, clinically healthy, multiparous, from two dairy farms located in the wilaya of Constantine.
Samples were realized at different physiological stages (beginning, middle and end of
gestation, prepartum, a day after calving and a month post partum). These samples focused on the assay of certain biochemical parameters (urea, creatinine, albumin, total proteins, cholesterol, calcium and phosphorus) and hormonal parameters (progesterone, oestradiol, prolactin)
Uremia, albunemia, proteinemia, cholesterolemina, calcemia, progesteronemia as well as the plasmatic concentration of oestradiol varied significantly (p<0.01). The plasmatic concentrations of creatinine showed slight variations (p=0,198 > 0,01), whereas those of prolactin did not show any variation (p=0,41 >0.05).
The obtained results on the base of blood parameters (biochemical and hormonal), indicate the necessity to monitor the metabolic profile of animals, in order to determinate the nutritive state, and to take preventive measures towards health troubles to increase the productivity.
Diplôme : Magistère En ligne : ../theses/veterinaire/BEN6934.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10286 Exemplaires
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Titre : Étude des variations biochimiques du lait et du sang chez les vaches laitières en fonction de l’alimentation. Type de document : texte imprimé Auteurs : Sara Benayache, Auteur ; Abdesselam Mekroud, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 127 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : profil biochimique vache laitière tarissement lactation alimentation biochemical profile dairy cow drying lactation diet ??????? ???????????? ???? ???? ????? ????? ??????? Index. décimale : 636 Sciences Vétérinaires Résumé : Our study has as main objective to establish a biochemical profile of blood and milk with different dietary intake (dry, early lactation). To make usual values available in the hand of veterinary practitioners so they can use them as an early diagnostic tool.
A second objective was to determine the relationship between dietary and quality of milk.
This research was conducted on 20 Holstein cows, aged 3 to 7 years, clinically healthy, multiparous from two dairy farms in the province of Constantine.
The blood of 15 days interval samples were conducted during the period from the
beginning of drying up until 3rd month of lactation. These samples have concerned some
blood parameters (glucose, triglycerides, cholesterol, total protein, albumin, urea,
creatinine, ALT, AST, calcium and phosohore).
A milk monthly interval sampling was carried out during the first months of lactation. These relate to the determination of certain biochemical parameters "" milk protein, lactose"" and the analysis of some physicochemical parameters “acidity, density, pH”.
Proteinemia, créatinimie and plasma ALT showed significant variation (p < 0.05) between the two farms of the study.
The triglycédérimie, the chlestérolémie, the protéinimie, uremia, crétinimié, serum calcium, plasma ALT activity and AST, the rate of protein substances and lactose rate showed significant variation across different stages of the study. While blood sugar, serum albumin, serum phosphate, acidity, density, pH, and the fat rate showed no significant variation.
The results obtained on the basis of the parameters indicate that the biochemistry of milk and blood may be an early detection tool of dietary errors.
Diplôme : Magistère En ligne : ../theses/veterinaire/BEN6940.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10291 Étude des variations biochimiques du lait et du sang chez les vaches laitières en fonction de l’alimentation. [texte imprimé] / Sara Benayache, Auteur ; Abdesselam Mekroud, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 127 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : profil biochimique vache laitière tarissement lactation alimentation biochemical profile dairy cow drying lactation diet ??????? ???????????? ???? ???? ????? ????? ??????? Index. décimale : 636 Sciences Vétérinaires Résumé : Our study has as main objective to establish a biochemical profile of blood and milk with different dietary intake (dry, early lactation). To make usual values available in the hand of veterinary practitioners so they can use them as an early diagnostic tool.
A second objective was to determine the relationship between dietary and quality of milk.
This research was conducted on 20 Holstein cows, aged 3 to 7 years, clinically healthy, multiparous from two dairy farms in the province of Constantine.
The blood of 15 days interval samples were conducted during the period from the
beginning of drying up until 3rd month of lactation. These samples have concerned some
blood parameters (glucose, triglycerides, cholesterol, total protein, albumin, urea,
creatinine, ALT, AST, calcium and phosohore).
A milk monthly interval sampling was carried out during the first months of lactation. These relate to the determination of certain biochemical parameters "" milk protein, lactose"" and the analysis of some physicochemical parameters “acidity, density, pH”.
Proteinemia, créatinimie and plasma ALT showed significant variation (p < 0.05) between the two farms of the study.
The triglycédérimie, the chlestérolémie, the protéinimie, uremia, crétinimié, serum calcium, plasma ALT activity and AST, the rate of protein substances and lactose rate showed significant variation across different stages of the study. While blood sugar, serum albumin, serum phosphate, acidity, density, pH, and the fat rate showed no significant variation.
The results obtained on the basis of the parameters indicate that the biochemistry of milk and blood may be an early detection tool of dietary errors.
Diplôme : Magistère En ligne : ../theses/veterinaire/BEN6940.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10291 Exemplaires
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