Abstract
The objective of the study was to evaluate the quality of semen retrieved from cauda epididymis of crossbred bulls in the tropics. Testes from one hundred and twenty six recently slaughtered cross bred bulls in the tropics were used for the analyais. The total and progressive motility percentage obtained for epididymal semen were 49.17±9.26 per cent and 27.5±9.11 per cent respectively. The mean concentration obtained for epididymal semen was 37,175x106 ±7612x106 per ml. The mean percentage of live and dead sperms was 84.5±8.02 per cent and 15.5±8.02 per cent respectively. The mean percentage of normal spermatozoa, spermatozoa with abnormal heads, abnormal tails, spermatozoa with a proximal protoplasmic droplet and distal protoplasmic droplet were 35.67±2.30, 3.17±1.58, 2.33±0.61, 11.67±4.01 and 47.17±3.17 per cent respectively. Int J Appl Sci Biotechnol, Vol 4(1): 130-132
Highlights
Epididymal semen is being more often considered as a potential and valuable resource of genes
At least 200 spermatozoa were counted in each sample, and classified as either: normal spermatozoa, spermatozoa with abnormal heads or tails, or spermatozoa with a proximal or distal protoplasmic droplet
The mean total and progressive motility percentage obtained for epididymal semen from crossbred bulls were 49.17±9.26 per cent and 27.5±9.11 per cent respectively
Summary
Epididymal semen is being more often considered as a potential and valuable resource of genes. Literature review showed that there were no studies about evaluation of epididymal semen in crossbred cattle in the tropics. To utilize this resource as efficiently as possible, the seminal characteristics of cauda epididymal semen have to be studied. Morphological Studies on epididymal semen was conducted in agouti (Dasiprocta aguti) by Silva et al (2011) and in camels by El-Badry et al (2015)
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