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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2012 > Volume 11 Number 1 > H.A.A. Elagib, N.A. Musharaf, S.A. Makawi and H.E. Mohamed

The Effects of Age and Season on Semen Characteristics of White Leghorn Cocks under Sudan Conditions

H.A.A. Elagib, N.A. Musharaf, S.A. Makawi and H.E. Mohamed
Department of Animal Production, Faculty of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Kingdom of Saudi Arabia
Abstract :

White Leghorn cocks (Bovans) of 2 different ages (1-2 years) were used to study the effect of age and season on semen characteristics. An average of 8 males from each age were used and kept in individual cages in an open sided poultry house for 6 months. Average maximum and minimum daily temperature during summer and autumn seasons were 40.3, 24.4 and 39.3, 26.1, respectively. Semen was collected weekly by abdominal massage and evaluated for semen volume, motility, concentration and percentage of dead and abnormal spermatozoa. There was a significant difference (p<0.05) between the two age groups in semen volume 0.22±0.02 and 0.29±0.25 mL; mass motility scores were 3.56±0.06 and 3.17±0.08 and the percentage of abnormal sperm 4.67±0.14 and 5.62±0.16% for one and 2 years, respectively. No significant difference was found in sperm concentration or percentage of dead sperms. Summer season caused a significant drop in semen volume by 8.7% in one year old and sperm concentration in two years old by 19.7%. It is also, caused an increase in percent dead sperm by 40.86 and 41.89% in 1 and 2 years, respectively.

Keywords :
Semen characteristics, hot climate, white leghorn cocks, sperm concentration

Date Deposited : 26 Feb 2015 11:46

Last Modified : 26 Feb 2015 13:20

Official URL: http://www.pjbs.org

Volume 11, Number 1, - 2012 , ISSN 1682-8356

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