Magistriniame darbe aptariamas elninių populiacijos dinamika Ukmergės rajono Šešuolių girioje. Savo tyrimams aš pasirinkau 3 rūšis, t.y. briedį, taurųjį elnią ir stirną. Visos jos svarbios kaip medžiotinos rūšys, todėl jas būtina tinkamai valdyti. Šiuo tikslu aš atlikau apskaitą Ukmergės rajono Šešuolių girioje nuo 2004 - 2008. Apskaitos buvo atliekamos ketverius metus. Šiais metais apskaita buvo pakartota tam kad būtų galima apskaičiuoti šių kanopinių pasiskirstymą ir gausumą. Buvo nustatyta, kad 2007 – 2008 m. populiacijos tankumas buvo 46 stirnos, 14 elnių, 7 briedžiai; 2006 - 2007 populiacijos tankumas buvo 42 stirnos, 11 elnių, 6 briedžiai, 2005 – 2006 m. buvo 53 individai stirnų, 14 individų elnių, 10 individų briedžių; 2004 – 2005 m. buvo 58 individai stirnų, 14 individų elnių, 8 individai briedžių. Vidutinis briedžių tankumas siekė 2,9 ±0,3 ind. /1000ha, tauriųjų elnių 4,8 ± 0,3 ind./1000ha, stirnų 19,1 ±1,3ind/ 1000ha. Akivaizdu kad tirtų rūšių būklė yra nevienoda. Palyginus pastaruosius dvejus metus, briedžių populiacija sumažėjo, tauriųjų elnių populiacijos tankis nepasikeitė, tačiau stirnų – padidėjo. Gaila, kad kanopinių skaičius mažėja dėl nuolatinio medžiojimo ir brakonieriavimo. Populiacijos modeliavimas padeda kontroliuoti daugelį faktorių, kurie keičia populiacijos būklę. Rekomenduojam, kad apskaitos būtų papildomai tikrinamos, kompiuterizuotos ir jų duomenys būtų prieinami visiems. Netikslumus sumažinti padėtų ir tikslesni apskaitų metodai. / Cervides population dynamic in Šešuolių forest in Ukmergė distict is rewied in diploma paper. Moose (Alces alces), Red Deer (Cervus elaphus), and Roe Deer (Capreolus capreolus) were cowered by this investigation.. They are important as hunting species. For this purpose I have made survey of these ungulates in Šešuoliai forest. Surveys were continued four years from 2004 till 2008. Results were compared between years to find changes in abundance. It was found that the density of population in 2007 – 2008 was 46 individuals of Roe Deer, 11 individuals of Red Deer, 7 individuals of Moose; in 2006 – 2007 years the density of population was 42 individuals of Roe Deer, 11 individuals of Red Deer, 6 individuals of Moose; in 2006 – 2005 was was 53 individuals of Roe Deer, 14 individuals of Red Deer, 10 individuals of Moose ; in 2005 – 2004 was was 58 individuals of Roe Deer, 14 individuals of Red Deer, 8 individuals of Moose. Average density of Moose was 2,9 ±0,3 ind. /1000ha, that of Red Deer 4,8 ± 0,3 ind./1000ha, and Roe Deer - 19,1 ±1,3ind/ 1000ha. Obviously that the status of investigated species was not stable. In comparison the last two years population of Moose decreased, the density of Red Deer did not change, but the density of Roe Deer increased. Number of cervids is decreasing because of constant hunting and poaching. Modelling of the population allows to assess and control of the influence of various factors, which change number of individuals in real populations. It is... [to full text]

Introduction. Ecological farming occupies a special position among various technologies in agriculture. It is based on modern, environment friendly technologies which do not use synthetic chemical substances (fertilizers, pesticides, drugs, growth enhancers, etc.), but use their substitutes instead. Ecological rabbit breeding is a novelty in Lithuania; however, the observations prove that the number of those willing to run such farms is increasing. The conditions of rabbit keeping must be as close to natural as possible to assure that the wellbeing and health requirements for the animals are fulfilled. Rabbits must have a possibility to move freely, satisfy their instincts. Goal of research. The research aims to study the digestibility of nutrients in rations used for feeding rabbits with ecological feedstuffs. Method of research. The research has been carried out at the vivariums of Lithuanian Veterinary Academy using New Zealand rabbit breed. To study digestibility 3 groups were formed, 10 rabbits aged 60days were selected from each group. The rabbits were kept in individual cages and had sufficient of water. The same feedstuffs as on ecological farms were used. The research consisted of the following stages: 1. Adaptation (duration – 3 days); 2. Preparatory stage (duration – 5 days); 3. Collection of faeces and stale (duration – 5 days). Review of research data. The crude protein and raw fat in ration perform a specific function of life-support and production, in case of... [to full text]