Magistère (PRODUCTIONS ANIMALES)

Effets de différentes doses de Dexaméthasone sur la fonction thyroïdienne chez le mouton Ouled Djellal

Fri, 01 Jan 2016 00:00:00 GMT

Effets de différentes doses de Dexaméthasone sur la fonction thyroïdienne chez le mouton Ouled Djellal Kerrour Mustapha; Kellali Narimane Synthetic glucocorticosteroids are widely used in veterinary medicine for their antiinflammatory and immunosuppressive actions. However they are deemed to have multiple side effects such as hypothyroidism. The aim of this study was to define the effects of Dexamethasone (DEX) administered parenterally (IM) at therapeutic doses conventionally used in the anti-inflammatory and immunosuppressive treatments on the thyroid function in sheep. Fifteen sheep of Ouled Djellal breeds were randomly divided into three groups of five sheep each. The animals received an injection of Dexamethasone (DEXALONEND solution) at a rate of 1.52 mg DEX / J for 6 days for group1 and 3.4 mg DEX / J for 6 days for group 2, the third group has served as control group and did not receive any treatment. Blood samples taken over a period of 3 weeks were analyzed to define the plasma levels of free thyroid hormones fT4 fT3. It has been shown that Dexamethasone induced a significant decrease (P <0.05) of serum fT4 and fT3 24 hours following the start of treatment. Hormone levels have returned to their baseline values 24 hours after treatment withdrawal. From these results, we can deduce that Dexamethasone antithyroid-effects are transitory and therefore do not have a significant impact on the health of the animals. 92 f.

Contribution a l’etude de quelques parametres hematologiques et ioniques chez le cheval dans le nord de l’Algerie

Fri, 01 Jan 2016 00:00:00 GMT

Contribution a l’etude de quelques parametres hematologiques et ioniques chez le cheval dans le nord de l’Algerie Kerrour Mustapha; Mekroud Meriem The horse, who is a noble kind occupying a prestigious status, and for whom it would be interesting to put in the disposition of the veterinarians in Algeria, a usual values which can be interesting in the early detection of different illness and deseas. The first one part of this study consists in marking a synthesis of the bibliographic data of some hematological and ionic parameters at the horse. The second part which is experimental is divided into two; the first studies a lot of hematological (RBC, Hb, Htc, MCH, MCHC, TRBC, WBC, Neu %, Eos %, Baso %, Lym % and Mono %) and ionic (Na, K, Cl, Ca, Mg and P), then analyses the effects of the diffrent factors (age, breed, sex and mode of use) on these studied parameters. On the whole, all stocks are in physiological norms, except the chlorine and the magnesium which are higher, the sodium with a little more spread interval and with the calcium witch is lower than normal. The influence of the factors is not marked except for white cells, calcium and phosphorus who differ significantly according to the age group. The second shutter which is based on the study of effect season on explored parameters, shows that there is a season effect on some of them ; the haemoglobin and the hematocrit are correlated with winter season, the magnesium with summer season. Over the year, an eosinophilia in spring and neutrophilia in autumn are noted. As for ions, hypocalcemia is marked in winter, hypochloremia in spring and summer and a progressive decrease of the magnesium throughout the year. 140 f.

Étude des variations biochimiques du lait et du sang chez les vaches laitières en fonction de l’alimentation.

Sun, 01 Jan 2017 00:00:00 GMT

Étude des variations biochimiques du lait et du sang chez les vaches laitières en fonction de l’alimentation. Mekroud Abdesselam; Benayache Sara 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. 127 f.

Caractérisation phénotypique et profil biochimique de quelques souches locales de poules

Fri, 01 Jan 2016 00:00:00 GMT

Caractérisation phénotypique et profil biochimique de quelques souches locales de poules Messabhia Manel; Agabou Amir The use of selected commercial chicken and hens breeds characterized by their high production potential, has led to the neglect of local breeds or strains that are very important sources of genetic traits (adaptation to difficult climates, low dietary requirements and resistance to diseases). So, this study was conducted on different local chicken strains to identify their phenotypes, to characterize their body shapes through measurements, to determine their biochemical profile and to describe some of their production potentials. According to their phenotypes, 4 strains were identified: normal plumage NP, crested head CH naked neck NN and feathered tarsus FT. These strains showed a similar biochemical profile to accepted standards for hen; however, their carcasses were lighter with substantially heavier edible offal (gizzard, heart and liver). The quality of eggs produced by the NP strain hens are of better quality than those produced by other varieties. Finally it is important to undertake further studies on a larger number of strains in other localities. These investigations will focus on the genetic characterization by molecular markers, detailed analyzes of biochemical and hematological profiles, organoleptic analysis of food products from these strains, as well as evaluations of their ability to adapt to industrial farming conditions. 218 f.