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Evaluation of pheasant semen production during the reproductive season.

The aim of this research was to evaluate the quality and quantity of semen production of pheasants during the reproductive season. Fifty-five male pheasants (Phasianus colchicus mongolicus) were used from 37-59 weeks of age. Semen samples were collected manually on a biweekly basis. At 45 weeks of age, pheasants which had never produced (n = 22) or only produced occasionally (n = 7) were discarded from the study. The volume of the ejaculate from each male was measured upon each semen collection. Sperm concentration and motility were measured for every semen collection from the 41st week of age. Body weight was recorded at 38 and 39 weeks and then every 2 weeks. The largest percentage (55%) of males producing semen was reached at 44 weeks of age. Semen variables showed the following mean values during the reproductive season: volume = 105 mg, concentration = 5.86 x 10(9)/ml, and motility scale = 2.45 (modest-good). Semen variables were significantly influenced by bird and age but not by day of collection.