| leucocytozoonosis in canada geese in upper michigan,. 1. strain differences among geese from different localities. | geographic variation in pathogenicity of leucocytozoon simondi in canada geese (branta canadensis maxima) was investigated by exposing goslings to natural infection at three locations in the upper peninsula of michigan. examination of blood smears and tissue sections revealed two patterns of development. hepatic schizogony and secondary megaloschizogony occurred in cells of the reticuloendothelial system, with round and elongate gametocytes, or only hepatic schizonts and round gametocytes. the e ... | 1978 | 416231 |
| treatment of captive giant canada geese affected by avian cholera. | in the spring of 1975, an epornitic of avian cholera in nebraska affected wild waterfowl, common crows (corvus brachyrhynchos), and a captive flock of guant canada geese (branta canadensis maxima). measures taken to control the disease in the captive geese included flushing the water of their pen with fresh well water, parenteral (50mg oxytetracycline intramuscularly) and feed (tetracycline 500 g/ton) antibiotic treatment, and removing dead waterfowl and crows from the pen, and keeping wild wate ... | 1977 | 916145 |
| a hematologic survey of captive waterfowl. | hematologic parameters were studied in giant canada geese (branta canadensis maxima), mallard ducks (anas platyrhynchos platyrhynchos) and various species of diving ducks at seasinal intervals throughout the year. highest values for packed cell volume, hemoglobin content and erythrocyte counts were found in the winter and pre-nesting periods. mean corpuscular volume and mean corpuscular hemoglobin varied inversely with these values. | 1976 | 933309 |
| ultrastructural and cytological changes in the muscle fibers of the pectoralis of the giant canada goose (branta canadensis maxima) in disuse atrophy during molt. | adult male branta canadensis maxima were collected from a nonmigratory feral population during their premolt, molt and postmolt phases. lean dry weight of the pectoralis muscle decreased significantly (p less than or equal to 0.0001) during molt, as a result of disuse atrophy. histochemical analysis revealed that the region of the pectoralis muscle sampled consisted of red (fast-twitch oxidative-glycolytic) and white (fast-twitch glycolytic) muscle fiber types, in an approximate ratio of 9 to 1. ... | 2012 | 3568110 |
| carpometacarpal deformity in giant canada geese (branta canadensis maxima delacour). | | 1984 | 6492331 |