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Wyszukujesz frazę "exotic" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Perception of farmers on exotic chicken breeds and its management condition in North western zone Tigray, Ethiopia
Autorzy:
Teklemariam, Abadi
Powiązania:
https://bibliotekanauki.pl/articles/1178284.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
chicken management
constraints
exotic chicken breed
perception
Opis:
The study was conducted in two Woredas of North western zone of Tigray, Ethiopia. The survey was conducted by interviewing 264 randomly selected respondents to assess the chicken production system and perception of farmers regarding the benefits and constraints of using exotic chicken breeds. Of total, 95.1% of respondents practiced free ranging type chicken production system with little feed supplementation. About 95.4% of the respondents were using traditional treatment for their chicken as prevention as well as for treating their poultry from different diseases. Farmers’ in the study area were perceiving that producing of exotic poultry have the benefits such as higher egg production capacity, fast growing ability of chicken and higher selling price of exotic poultry eggs as compared to the local ones. On the other hand, cost of the exotic chicken breed, needs more care, higher feed requirement, susceptibility to diseases and predators are among the major constraints in producing exotic poultry breeds as compared to local poultry. The government and non-governmental organizations that involved in improving poultry production in the rural areas should address the major constraints of poultry production that hinder the adoption of exotic poultry in the study area. Therefore, technical and institutional interventions are very crucial to reduce the existing constraints and improve the existing traditional chicken production system in the study area.
Źródło:
World Scientific News; 2017, 86, 3; 168-179
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamical analysis for a variable generalized Chaplygin gas
Autorzy:
Malaver, Manuel
Powiązania:
https://bibliotekanauki.pl/articles/1182756.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Exotic matter
Inversion temperature
Joule-Thomson coefficient
Variable Chaplygin gas
Variable generalized Chaplygin gas
Opis:
Considering the work of Panigrahi (2015) and Panigrahi and Chatterjee (2016), in this paper we study some properties of variable generalized Chaplygin gas (VGCG) model, exotic matter used in some cosmological theories whose equation of state is (..) where (..). We obtain an analytical expression for Joule-Thomson coefficient and we have deduced the inversion temperature for variable and variable generalized Chaplygin gas. We investigate the thermodynamical behavior for VGCG model in different process.
Źródło:
World Scientific News; 2017, 66; 149-162
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alien aquarium fish species found in open waters of Poland with new record of Amazonian Red Pacu Piaractus brachypomus, Cuvier, 1818 (Serrasalmidae) from Bzura river
Autorzy:
Maciaszek, Rafał
Eberhardt, Maria
Wilk, Sylwia
Sosnowski, Witold
Szpakowski, Bartłomiej
Powiązania:
https://bibliotekanauki.pl/articles/1075465.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Lepomis gibbosus
Piaractus brachypomus
Serrasalmidae
central Europe
exotic species
inland waters
invasive species
uncontrolled introductions
Opis:
Aquarium fish are often kept pets. Due to inappropriate actions of fishkeepers some of them are released into natural environment in many countries around the world, also in Poland. Species of exotic ichthyofauna usually do not have the possibility of survival and reproduction in a temperate climate, however the environment of thermally polluted waters in Poland could provide the tropical fish with appropriate living conditions. Cold water species may settle stable populations and threaten native fauna and flora. This work, based on the available scientific literature, describes the invasive potential of aquarium fish species introduced in Poland. The scale of introducing alien species of aquatic origin into Polish waters is difficult to estimate. It is recommended that monitoring should cover the largest possible number of water reservoirs in this country.
Źródło:
World Scientific News; 2019, 126; 276-282
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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