Semen characteristics of the muscovy drake ( Cairina moschata ) as affected by seasonal variation
نویسندگان
چکیده
Seasonal variations of semen characteristics of the Muscovy drake were examined between January and July, 1981. Interrelationships among semen characteristics and libido as affected by seasonal changes in temperature, humidity and daylight hours revealed the following : conditioning the Muscovy drake to give semen increased its libido and improved semen quality ; in addition, peaks of sperm production occurred between the first week of March and the first week of April. An increase in humidity at temperatures above 26-27 °C induced thermal discomfort in the Muscovy drake, expressed by a significant decrease in sperm motility.
منابع مشابه
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