Available online at www.pelagiaresearchlibrary.com Pelagia Research Library Advances in Applied Science Research, 2013, 4(1):240-243 ISSN: 0976-8610 CODEN (USA): AASRFC 240 Pelagia Research Library Influence of mercury on the body weight of Isa brown hibrid *Imer Haziri 1 , Bujar Mane 2 , Sabit Dermaku 1 , *Arben Haziri 3 , Fatmir Faiku 3 , Arlinda Bytyqi-Damoni 3 , Driton Qaushi 1 , Fatgzim Latifi 1 and Ilir Dove 2 1 Department of Veterinary, Agriculture & Veterinary Faculty, University of Prishtina, KOSOVO 2 Departament of Biochemistry, Veterinary Faculty, Agricultural University of Tirana, ALBANIA 3 Department of Chemistry, Mathematics & Natural Sciences Faculty,University of Prishtina, KOSOVO _____________________________________________________________________________________________ ABSTRACT The aim of this work was to investigate the influence of Hg ions on the body weight of the birds of hybrid Isa brown. In this study we have analyzed the influence of the Hg ion in the body weight during treatment within 19 days. We used HgCl 2 solid, dissolved in distillate water in different concentrations: 50, 100, 200 mg/l. We have used four groups, three of them we treated with different concentrations of Hg and one was as standard. Every group contains 6 birds of the hybrid Isa brown. We found that control group has increased the body weight for 11.67 g/day. The group which we have treated with 50mg Hg/l has increased the body weight for 12.14 g/day. When we treat with 100 mg Hg /l the body weight of hybrid Isa brown was increased for 15.48 g/day. Using the concentration of 200 mg Hg/l the body weight was increased for 10 g/day. From these results we can conclude that Hg ions have influence in the body weight of the hybrid Isa brown. Key Words: hybrid Isa brown, Hg ions, body weight. _____________________________________________________________________________________________ INTRODUCTION Mercury is not essential ion for birds [1]. It is located in two forms: inorganic and organic form which is the most dangerous forms of human and animal health [2]. Physical development is a fundamental part of biological system in the body; it can be defined as an increase in the number and size of cells in the body size per unit of time [3, 4]. In physical development affect a number of genetic and non-genetic factors [5, 6]. Mercury is quite big competitor of selenium in the body. Selenium is an essential dietary element, which is the necessary element for more than 25 different enzymes [7]. Mercury has affinity to act sulfur in the protein molecule, metallothionein, glutathione and cysteine [8]. Investigations that have been made with the provision of mercury acetate in chickens aged 6 to 9 weeks, determined that diets with 20 ppm were not toxic [9]. It is shown that small quantities of mercury in food affect the growth of young chickens , body weight [10]. After more drinking water treatment with HgCl 2 for 14 days in mice is not noticed any effect on body weight [11]. A number of studies made different animal ’ s concerning to the use of mercury chloride in the manner orally resulted in a decrease on increase in body weight [12, 13]. The purpose of this research work was to investigate the influence of different concentration of mercury (given through the drinking water) in the development of body weight of the birds Isa brown.