نتایج جستجو برای: bird diseases
تعداد نتایج: 872948 فیلتر نتایج به سال:
Although a relatively recently emerged virus, identified only in 2004 as a separate species of avian astrovirus, chicken astrovirus (CAstV) has been associated with poor growth of broiler flocks, enteritis and diarrhea and is a candidate pathogen in cases of runting stunting syndrome. More recently CAstV has been implicated in cases of two other diseases of broilers as the sole etiological agen...
The unprecedented rate of change in the Arctic climate is expected to have major impacts on the emergence of infectious diseases and host susceptibility to these diseases. It is predicted that malaria parasites will spread to both higher altitudes and latitudes with global warming. Here we show for the first time that avian Plasmodium transmission occurs in the North American Arctic. Over a lat...
DESTRUCTION of the natural environment of upland game birds and ever-increasing pressure for more birds for hunting have led to attempts by conservationists to utilize artificially propagated birds for restocking. Sportsmen and others concerned with the artificial or controlled production of these birds have learned through costly experience that losses from pathological factors are often treme...
Islands host a high percentage of endemic species due to their ecosystems having evolved in isolation [1]. In the absence of natural predators and resistance to alien diseases, the flora and fauna of islands are considered more fragile than mainland species and prone to impacts from non-native species [2]. The ecosystems of the Hawaiian Islands, one of the world’s most isolated archipelagos, ha...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید