21 research outputs found
Projet de dĂ©veloppement de lâĂ©levage camelin en Tunisie
Camel breeding is of great socio-economic importance in southern Tunisia. Although, the size of the national camel herd has decreased over the years from 120 000 to 56 000 heads in 2014. Illegal export, low breeding efficiency, social modernization and lack of investment are the major causes of this decline. To remedy this situation, the Tunisian government has established a national program for development and research on camel production. This program is based on grants to farmers to encourage rearing of replacement females and fattening camels; improvement of pastures and water infrastructure, promotion of applied research in specialized centers. Research efforts are centered on health, nutrition and improvement of rangelands, development of reproductive biotechnologies and genetic improvement. An attempt was carried out to genotype the local breeds of camels. Development of semen preservation and artificial insemination has met several challenges inherent to the peculiarities of reproduction in this species.
Keywords: Husbandry, reproduction, biotechnologies, Camel, TunisiaLâĂ©levage du dromadaire joue un rĂŽle socio-Ă©conomique important dans le sud tunisien mais le nombre de dromadaires a connu ces derniĂšres annĂ©es une diminution importante de 120 000 Ă 56 000 en 2014. Lâexportation illĂ©gale, le rendement faible de lâĂ©levage, la modernisation de la vie des personnes et le manque dâinvestissement dans ce domaine sont les principales causes de cette diminution. Pour remĂ©dier Ă ce problĂšme, lâĂ©tat tunisien a proposĂ© un programme national de dĂ©veloppement et de recherche dans le domaine du dromadaire basĂ© sur (1) lâencouragement des Ă©leveurs par la subvention de lâĂ©levage des femelles de remplacement et lâengraissement des chamelons, (2) lâamĂ©lioration des infrastructures dans les pĂąturages; notamment lâamĂ©nagement des points dâeau pour les animaux et (3) la promotion de la recherche appliquĂ©e dans les centres spĂ©cialisĂ©s. Les principaux thĂšmes de recherche sont axĂ©s sur la santĂ© animale, lâalimentation des dromadaires et lâamĂ©lioration des zones de parcours, lâinsĂ©mination artificielle et le transfert dâembryon et la sĂ©lection gĂ©nĂ©tique des animaux. Dans le domaine de la biotechnologie de la reproduction, des essais ont Ă©tĂ© rĂ©alisĂ©s dans le typage gĂ©nĂ©tique des dromadaires, la conservation du liquide sĂ©minal et lâinsĂ©mination artificielle pour surmonter les difficultĂ©s particuliĂšres de la reproduction chez le dromadaire. Mots-clĂ©s: Ălevage, reproduction, biotechnologies, dromadaire, Tunisi
Dynamic spectrum allocation with admission control based on cognitive radio for QoS support in multiple wireless network
A Fuzzy Adaptive Network Model for Waviness Removal in Grinding of Wire-Sawn Silicon Wafers
Traditional or behavioural? A combined decision making trial and evaluation laboratory and analytic network process approach for capital structure determinants of Turkish companies
The aim of this study, following a new approach under the irrationality of managers, is to investigate the most effective determinants of capital structure decisions by combining traditional capital structure determinants with managerial-behavioural biases. In line with this objective, considering the capital structure decision as one that employs multicriteria decision making, two of the multicriteria decision-making methodsânamely, Decision Making Trial and Evaluation Laboratory (DEMATEL) and Analytic Network Process (ANP)âare integrated into a hybrid method to analyse the interdependent relationships among traditional capital structure determinants and managerial-behavioural biases and to prioritize them by making dual comparisons. Our findings show that managerial-behavioural biases, not traditional capital structure determinants, are more effective in the capital structure decision and that anchoring is the most influential among managerial-behavioural biases. © 2019 John Wiley & Sons, Ltd