UMM Logo

Universitas Muhammadiyah Malang


Free Download Journals Directory


International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2008 > Volume 7 Number 12 > J.A. Obidi1, B.I. Onyeanusi2*, P.I. Rekwot1, J.O. Ayo1 and T. Dzenda1

Seasonal Variations in Seminal Characteristics of Shikabrown Breeder Cocks

J.A. Obidi1, B.I. Onyeanusi2*, P.I. Rekwot1, J.O. Ayo1 and T. Dzenda1
1Department of Veterinary Physiology and Pharmacology,2Department of Veterinary Anatomy, Ahmadu Bello University, Zaria, Nigeria
Abstract :

The seasonal influence on the seminal characteristics of Shikabrown breeder cocks was evaluated weekly during the three seasons in Northern Guinea Savannah zone of Nigeria. Semen samples were analyzed by gross and routine laboratory methods for volume, motility, concentration, colour, percent
dead and percent total abnormality. The highest volume and concentration values of 0.50±0.03ml and
3.60±0.16x109/ml, respectively, were obtained from Shikabrown White breeder cocks during the rainy
season, while the lowest volume and concentration values of 0.39±0.01ml and 2.90±0.04x109/ml,
respectively, were obtained for the same strain during the hot-dry season. Spermatozoa motility of 80.5±1.1% and 82.3±0.5% were obtained during the harmattan and rainy seasons, respectively, in Shikabrown White breeder cocks. Percent dead sperm values of 4.6±8.3% and 6.40±0.5% were recorded during the rainy and hot-dry seasons, respectively; which were lower (P < 0.05) than the value of 9.0±1.0% obtained during the harmattan season in Shikabrown White breeder cocks. For the Shikabrown Red breeder cocks, spermatozoa volume and concentration were 0.44±0.02ml and 3.44±0.05x109/ml; while 0.45±0.05ml and 3.53±0.09x109/ml.were recorded for the harmattan and rainy seasons, respectively. These values were significantly (P < 0.01) different from the corresponding values of 0.30±0.02ml and 2.50±0.08x109/ml  obtained for volume and concentration, respectively, during the hot-dry season in the Shikabrown Red breeder cocks. Percent dead sperm in the Shikabrown Red cocks during the rainy and hot-dry seasons (5.50±1.0% and 6.20±1.2%, respectively) were not statistically (P < 0.05) significant, but were significantly lower (P < 0.01) than the value of 8.40±0.5% obtained during the harmattan season. The ejaculate trait for percent abnormality in Shikabrown Red cocks was not significantly different from that of the Shikabrown White strains. In conclusion, spermatozoa were recovered throughout the year and optimal gamete quality was observed during the rainy and harmattan seasons.

Keywords :
Shikabrown breeder cocks, rainy season, hot-dry season, dead sperm

Date Deposited : 13 Jul 2011 12:55

Last Modified : 13 Jul 2011 12:55

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

Volume 7, Number 12, - 2008 , ISSN 1682-8356

Download:
Full Text Original
Abstract : pdf doc
Home | Peta Situs | Admissions | Student Research | E-Journal
Universitas Muhammadiyah Malang © 2011
Developed by Infokom UMM
Last Update : 13 December 2016 20:46Kumpulan file jurnal