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See detailApparition de la puberté chez les agneaux mâles de race Ouled Djellal
Boussena, Sabrina; Bouaziz, O.; Hireche, S. et al

in Revue de Médecine Vétérinaire (2016), 167(9-10), 274-282

The aim of this study is to evaluate the body and testicular growth performances in Ouled Djellal rams from weaning until twelve months of age. It also contributes to the study of the onset of puberty in ... [more ▼]

The aim of this study is to evaluate the body and testicular growth performances in Ouled Djellal rams from weaning until twelve months of age. It also contributes to the study of the onset of puberty in Ouled Djellal rams and to follow the subsequent evolution of their semen production. Weekly measurements of body weight, chest perimeter, scrotal circumference, testicular length and diameter, as well as the cauda-epididymis diameter of the gonads were conducted in ten rams, from weaning and until the onset of puberty. Semen collection was also performed in the same manner with an electroejaculator in order to define puberty. After the onset of puberty, observations were made fortnightly on body weight, chest perimeter, testis morphometry and the evolution of semen characteristics. Puberty settled at an average age of 228± 7 days with an average weight of 40.4 ± 1.2 kg. Highly significant correlations were observed between testicular measurements and those of the body. Similar significant correlations were also observed between testicular measurements (especially scrotal circumference) and semen characteristics after puberty. [less ▲]

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See detailEffects of equine chorionic gonadotropin (eCG) on the sexual behaviour and ovulatory characteristics of female african N'Dama cattle.
Okouyi, M.W. Marcel; Hanzen, Christian ULg

in Revue de Médecine Vétérinaire (2016), 167(7-8), 211-215

This paper evaluated the effects of eCG on the characteristics of oestrus and ovulation after heifers and cows had been synchronised following vaginal administration of progesterone for seven days ... [more ▼]

This paper evaluated the effects of eCG on the characteristics of oestrus and ovulation after heifers and cows had been synchronised following vaginal administration of progesterone for seven days (Controlled Internal Drug Released) and a PGF2α injection two days after the end of treatment. The animals were randomly split into a non-treated control group (n=26) and four groups with increasing doses of eCG: 300 IU (n=25), 400 IU (n=24), 500 IU (n=23) and 600 IU (n=23), which were injected on the day of CIDR withdrawal. The animals were then followed (24 hours a day) for six days. Oestrus was confirmed on the basis of identifying 'standing oestrus', i.e., when the cow stood to be mounted. Seven to ten days after the CIDR® was withdrawn, the animals were slaughtered, and their ovaries were examined to identify and count the number of follicular and/or luteal structures. The onset of heat was 48.6 ± 5.3 hours after eCG injection, and the average length of oestrus was 9.9 ± 2 hours. The eCG dosage had no significant effect on these two parameters. In contrast, the observed rate of oestrus was significantly (p<0.05) higher in animals that had been treated (70.8 to 84.0%) in comparison with animals that had not been treated (50%). Similarly, the ovulation rate was significantly (p<0.05) higher in treated animals (88.0 to 100%) than in untreated animals (73.1%). The percentage of animals that presented multiple ovulations increased significantly (p <0.001) with the dosage of eCG administered (4.5% to 36.4%). [less ▲]

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See detailLes kystes ovariens chez le cobaye
Gillet, Aline; Deflers, Hélène ULg; Marlier, Didier ULg

in Revue de Médecine Vétérinaire (2016), 167(3-4), 51-58

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See detailFocus sur les astrocytes: cellules de la glie aux rôles multiples et importants dans le SNC. Le mouton est-il un excellent modèle animal ?
Salouci, Moustafa ULg; Gabriel, Annick ULg

in Revue de Médecine Vétérinaire (2016)

Les astrocytes représentent la population la plus importante de cellules gliales au sein du système nerveux central (SNC). Leur participation au fonctionnement du système nerveux central et leurs contacts ... [more ▼]

Les astrocytes représentent la population la plus importante de cellules gliales au sein du système nerveux central (SNC). Leur participation au fonctionnement du système nerveux central et leurs contacts avec les éléments neuronaux impliquent pour ces cellules des rôles très importants lors du développement du système nerveux, dans le cadre de différentes fonctions vitales et également lors de processus pathologiques. En plus d’être un soutien structurel, ces cellules jouent un rôle dans le métabolisme, la production et la libération de différentes molécules, l'entretien et le remplacement des neurones ; elles assurent également des fonctions immunitaires. La similitude entre l’être humain et le mouton en ce qui concerne certains aspects développementaux et anatomiques a donné de l'importance à ce dernier en tant que modèle expérimental animal permettant de mieux comprendre les rôles joués par les astrocytes dans les processus vitaux et pathologiques. Le but de cet article est de réaliser une synthèse sur le développent et les fonctions des astrocytes et leurs interventions lors de pathologie du SNC chez l’homme et chez le mouton. Enfin, l’utilisation du mouton en tant que modèle animal dans le cadre d’études expérimentales concernant les astrocytes est abordée. [less ▲]

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See detailUtilisation digestive et métabolique et valeur nutritionnelle de la farine de feuilles de Cassia tora (Linn.) incorporée dans la ration alimentaire des poulets indigènes du Sénégal
Ayssiwede, Simplice Bosco; Chrysostome, Christian; Ossebi, W. et al

in Revue de Médecine Vétérinaire (2010), 161(12), 549-558

In the prospect of the Cassia tora leaves meal recovering as a protein ingredient source for diets of Senegal indigenous chickens, a study was carried out to determine their nutrient utilisation and ... [more ▼]

In the prospect of the Cassia tora leaves meal recovering as a protein ingredient source for diets of Senegal indigenous chickens, a study was carried out to determine their nutrient utilisation and nutritional value. Twenty adult Senegal indigenous chickens were housed in metabolic cages and allotted in four groups of five birds each. The groups were corresponding to four dietary treatments (CT0, CT5, CT10 and CT15) containing respectively 0, 5, <br />10 and 15% of cassia leaves meal in substitution of groundnut cake meal. The cassia leaves are relatively rich in protein (27.4% DM), crude fibre (16.8% DM), NDF (25.7% DM) and ash (15.2% DM), particularly in calcium (3.1%) and potassium (1.3% DM). It contained 3.8% DM, 36.8% DM and 2050.47kcal/kg DM of ether extract, nitrogen-free extract and metabolizable <br />energy, respectively. Except for fat, the inclusion of Cassia tora leaves meal in the indigenous poultry diets until 15% has no significant adverse effect on nutrient and energy utilization, feed intake, average daily weight gain and feed conversion of the Senegal indigenous poultry. It significantly improved the crude fibre and ash utilization from 5% dietary treatment (CT5). [less ▲]

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See detailEvaluation de l’efficacité du Caprofène lors de bronchoneumonie expérimentale bovine à Mannheimia haemolytica
Wallemacq, Hugues; Boutet, Philippe; Zecchinon, L. et al

in Revue de Médecine Vétérinaire (2007), 158(8-9), 418-424

M. haemolytica serotype A1 (formerly known as Pasteurella) is the most important and commonly isolated bacterial pathogen from fatal cases of bovine fibrinous pleuroneumonia. M. haemolytica and its two ... [more ▼]

M. haemolytica serotype A1 (formerly known as Pasteurella) is the most important and commonly isolated bacterial pathogen from fatal cases of bovine fibrinous pleuroneumonia. M. haemolytica and its two principal toxins, the lipopolysaccharides (LPS) and the leukotoxin (LktA) induce the recruitment, the activation and the necrosis of neutrophils involved in the pathogenicity of bovine pneumonic mannheimiosis (BPM). The objective of this study was to determine whether systemic therapy with carprofène (Rimadyl®*), a non-steroidal anti-inflammatory drug, improves the disease development in an acute experimental model of BPM. The experimental pathology was induced by trans-tracheal inoculation of M. haemolytica and toxins at T0. One hour post-inoculation, six calves were treated intravenously with carprofen (1,4 mg/kg) while six placebo-treated calves received dose-matched volumes of sterile saline. The clinical and biochemical parameters were measured at one (T+1), three (T+3) and seven (T+7) hours after inoculation. Disease scores for carprofen treated calves were significantly lower than those for placebo-treated controls six hours (T+7) after treatment. These results were associated to a significantly oxygen saturation decrease at T+3 and a significantly blood lactate increase at T+7 in the control calves. Moreover, pulmonary lesions were significantly less extensive than those in the control group. Taken together, this finding suggest that pharmacological modulation by carprofen of pulmonary inflammation after appearance of acute BPM clinical signs leads to calves’ health enhancement and reduces the extent of gross pneumonic lesion. [less ▲]

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See detailAssessment of milk yield losses and subclinical mastitis risk factors using bulk milk somatic cell counts in dairy herds
Mtaallah, Brahim; Oubey, Zied; Hammami, Hedi ULg

in Revue de Médecine Vétérinaire (2002), 153(4), 251-260

A prospective study, involving 21 selected dairy farms in north of Tunisia, was conducted to asses the loss of milk production due to high levels bulk tank somatic cell count and to find some relationship ... [more ▼]

A prospective study, involving 21 selected dairy farms in north of Tunisia, was conducted to asses the loss of milk production due to high levels bulk tank somatic cell count and to find some relationship between risk factors and subclinical mastitis. We found that the mean of bulk milk somatic cell count was 626 103 cell/ml. Using a simple statistical model, the average loss of milk due to levels bulk tank somatic cell count was 524 kg per cow per year. Using method of mean comparisons, risk factors associated to high levels bulk tank somatic cell count was: Livestock farming risk factors : inadequacy bedding area; inadequacy cleaning bedding and scrapping area. Milking risk factors : washing teat with a shower no adjustable flow and without wipe with individuel towel milk shift work above five per cow-herd; no stripping squirts of milk before milking; milking healthy and mastitis cows at the same time; no teat dipping. [less ▲]

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See detailIsolation of Clostridium perfringens from three neonatal calves with haemorrhagic abomasitis.
Manteca, C.; Jauniaux, Thierry ULg; Daube, Georges ULg et al

in Revue de Médecine Vétérinaire (2001), 152

Braxy-like disease with sudden death and acute haemorhagic abomasitis was diagnosed in three Belgian Blue calves : one two-day-old and one one month-old calves, in good condition with no clinical signs ... [more ▼]

Braxy-like disease with sudden death and acute haemorhagic abomasitis was diagnosed in three Belgian Blue calves : one two-day-old and one one month-old calves, in good condition with no clinical signs noted a few hours prior to death, and another two day-old calf, which had shown problems of abomasal dilatation and regurgitation prior to death. Histologically, the abomasal wall were oedematous and emphysematous. A pure and abundant growth of Clostridium perfringens was obtained in anaerobic conditions from the abomasal wall of the three Belgian Blue calves. No bacterial growth was obtained in aerobic conditions. The calf with digestive disorders was also positive for BVD virus by immunofluorescence in the abomasal wall and in the spleen. [less ▲]

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See detailFibres alimentaires chez le chien : influence de l'incorporation de pulpes de betterave ou de chicorée sur la digestibilité des nutriments et les concentrations plasmatiques de plusieurs métabolites
Diez, Marianne ULg; Hornick, Jean-Luc ULg; Van Eenaeme, Christian ULg et al

in Revue de Médecine Vétérinaire (1997), 148

Cette étude relate les effets de la distribution de deux rations enrichies en pulpes de betterave ou de chicorée (7 p.100 ADF dans la matière sèche) en comparaison à une ration témoin sur les paramètres ... [more ▼]

Cette étude relate les effets de la distribution de deux rations enrichies en pulpes de betterave ou de chicorée (7 p.100 ADF dans la matière sèche) en comparaison à une ration témoin sur les paramètres fécaux, la digestibilité des principaux nutriments et plusieurs paramètres biochimiques (glucose, insuline, azote alpha-aminé, urée, cholestérol et triglycérides) mesurés à jeun ou pendant six heures après le repas chez huit chiens adultes en bonne santé. Les régimes enrichis en pulpes ont entraîné une augmentation significative de l'excrétion fécale totale, de l'excrétion de MS dans les matières fécales, une diminution de la teneur en MS des fèces ainsi qu'une diminution des coefficients de digestibilité des principaux nutriments. Le régime contenant la pulpe de betterave a entraîné une diminution de la glycémie à jeun, de l'insulinémie et des concentrations en triglycérides postprandiales, des concentrations en urée et en cholestérol mesurées avant et après le repas. Le régime contenant la pulpe de chicorée a provoqué une diminution de l'insulinémie postprandiale, des concentrations en urée et en cholestérol à jeun et après le repas. Ces deux types de pulpes, semblables par leur composition, induisent les mêmes types d'effets sur les paramètres fécaux et la digestibilité des nutriments, mais les effets systémiques sont plus importants lors de la distribution de pulpes de betterave. [less ▲]

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See detailNon délivrance et infécondité: intérêts de l’étiproston et du dosage de la PAGI (pregnancy-associated glycoprotein I) au cours du postpartum chez la vache.
Zaiem, I.; Tainturier, D.; Ben Othmen, H. et al

in Revue de Médecine Vétérinaire (1997), 148(8-9), 725-732

Sixty Prim'holstein cows with retained placenta for more than 24 hours after parturition, were shared in three groups of 20 cows each. All cows were delivred manually 24 to 36 hours post partum and ... [more ▼]

Sixty Prim'holstein cows with retained placenta for more than 24 hours after parturition, were shared in three groups of 20 cows each. All cows were delivred manually 24 to 36 hours post partum and received local treatment with 1 g of oxytetracyclin. Cows in group 1 received two intra-muscular injections of 5 mg etiproston on day of manual delivery (D1) and 15 days after (D15). Cows on group II received only one etiproston administration (D1), and cows in group III remained untreated. Ratios of delayed uterine involution were respectively 20, 40 and 55 % in groupsI,II and III(I<0.05;II<0.005). PAGI concentrations were checked 15 days after parturition and were significantly higher in cows affected by delayed uterine involution (p < 0.05). V-IAF intervals were significantly (p < 0.05) different between groups I (58 days), II (102 days) and III(143 days). [less ▲]

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See detailL’application des mécanismes de l’apprentissage dans l’utilisation du cheval.
Detobel, Thierry; Giffroy, Jean-Marie; Gueur, Hervé et al

in Revue de Médecine Vétérinaire (1988), 139

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