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Sahraoui N.,Blida University | Muller B.,Institute Tropical Suisse | Djamel Y.,Institute Pasteur dAlgerie | Fadela B.,Institute Pasteur dAlgerie | And 3 more authors.
Annales de Biologie Clinique | Year: 2010

The discriminatory potency of variable number of tandem repeats (VNTR), based on 7 loci (MIRU 26, 27 and 5 ETRs A, B, C, D, E) was assayed on Mycobacterium bovis strains obtained from samples due to tuberculosis in two slaughterhouses in Algeria. The technique of MIRU-VNTR has been evaluated on 88 strains of M. bovis and one strain of M. caprea and shows 41 different profiles. Results showed that the VNTR were highly discriminatory with an allelic diversity of 0.930 when four loci (ETR A, B, C and MIRU 27) were highly discriminatory (h > 0.25) and three loci (ETR D and E MIRU 26) moderately discriminatory (0.11 Source


Lazli A.,Center University dEl Tarf | Boumezbeur A.,Direction Generale des Forets | Moali A.,University of Abderrahmane Mira de Bejaia
Alauda | Year: 2012

Between 2006 and 2008 the breeding population of Ferruginous Duck, has been monitored by weekly censuses of adults, males and females, and families (female + chicks) at Lake Tonga (north-eastern Algeria), the most important nesting site of the species in southern Mediterranean. The following breeding parameters have been studied: dates of laying and hatching, clutch size and breeding success. The breeding population was estimated at 466 males and 427 females in 2006, 376 males and 375 females in 2007 and at 734 males and 728 females in 2008. Pairing takes place between mid March and early April. Laying is recorded during a period of 8 to 10 weeks from mid April to early July. A brood size of 4, 7 ± 1, 3 young (n = 159) was recorded in the first study year, another of 6 ± 1,6 young (n = 220) in the second year and of 5,8 ± 1.44 young (n = 267) in the third year. Young fledged between July and early October. Our study investigates the evolution of this population in order to assess its status and to develop a national action plan for its protection. Data collected during this study show an increase of the population relative to existing data on this site obtained in 1991-1992. Source


Lazli A.,Center University dEl Tarf | Moali-Grine N.,University of Abderrahmane Mira de Bejaia | Moali A.,University of Abderrahmane Mira de Bejaia
Revue d'Ecologie (La Terre et la Vie) | Year: 2011

The White-headed Duck Oxyura leucocephala is a species listed in the IUCN Red List as threatened (Endangered), it is also protected by the Algerian law as at risK ot extinction, Based on weekly surveys of adults, males and females, and nests (or families) on the Ramsar site of Lake Tonga, the most important nesting site of the species in southern Mediterranean, our work aims at checking the present status of this population in order to develop a national action plan for its preservation. The observations of adults and families during pre-breeding and breeding periods, conducted each year in 2006, 2007 and 2008, show a clear increase of the population relative to existing data on this site obtained in 1991-1992. Source


Boudechiche L.,Center University dEl Tarf | Araba A.,Institute Agronomique et Veterinaire Hassan II | Ouzrout R.,Center University dEl Tarf
Livestock Research for Rural Development | Year: 2010

The effect of complementation during the last two months of gestation by dates rubbish on growth of lambs and dairy performance of females during the lactation was studied in sheep. Sixty-four pregnant Berber ewes, multiparous, were randomly divided into two groups of 32 animals each. They received alimentation based on forage grazing. Females of test group were supplemented daily to the back pasture with dates rubbish coarsely crushed at 350 g/animal/day, after an adjustment period of 15 days. The impact of this complementation was measured by estimation of milk production of ewes according to the growth of their lambs during the first month of lactation and evaluation of mortality at the same period, The statistical study realised (SAS 1986) revealed significant differences (P = 0,007) between the growth performance of lambs of experimental and test groups (184 vs. 252 g/day) between 0 and 20 days but differences not significant (P = 0, 43) between 20 and 30 days (151 vs. 181 g/day), parallel, milk production was higher in ewes of the experimental group, average 1.08 vs. 0.87 l/day, In conclusion, complementation of females in late gestation by dates rubbish seems to have a benefic effect on performance as mother's milk that growth performance of their lambs. Source


Mebirouk-Boudechiche L.,Center University dEl Tarf | Boudechiche L.,Center University dEl Tarf | Touati A.,Center University dEl Tarf | Tahar A.,Annaba University | Araba A.,Institute Agronomique et Veterinaire Hassan II
Livestock Research for Rural Development | Year: 2010

Soil and climatic conditions and cultivation affect the floristic composition and yield of permanent grassland, these last, peopled by natural vegetation, not subject to any special management in the north east of Algeria, although they remain the main source of ruminant food existing in the area. In fact, never being closed to cattle, they don't allow grass growth, constraining yields and livestock production (milk, meat,?). The aim of this study is to develop these permanent grasslands through the knowledge of the flora that stands up to and the variability of their nutritional value in relation to the variability of their botanical composition during the seasons in order to exploit grasslands at the optimum stage. To do this, a comparative study in terms of plant biodiversity, productivity per hectare and nutritional value of two fields into one defends and the other grazed freely, concluded that setting defends minimum of two years would have higher yields (1.6 vs. 0.8 T DM / ha), the period of the grass would be most appropriate to the autumn period (height grass = 10 cm) and that of the hay was end of winter (grass height = 18 cm) However, to obtain a better compromise between yield and quality of grass, it would be interesting to exploit fields end of winter to optimize animal production. Source

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