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Asian Journal of Animal Sciences

Year: 2012 | Volume: 6 | Issue: 5 | Page No.: 249-255
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Authors

K.M. Okukpe

A.A. Adeloye

K.D. Adeyemi

O.A. Olatunde

V. Ojo

F.E. Sola-Ojo

Keywords

The aim of the study was to assess the effect of soymilk on spermatozoa and its use as an extender. Twelve Yankasa rams between 12-48 months old were used for the study. The semen was collected with an electroejaculator, evaluated for sperm concentration and percent sperm motility, live spermatozoa and sperm abnormalities. The best semen samples were randomly assigned to four extenders (Cornell University Extender, CUE), whole milk glycerol extender, soymilk glycerol extender and soymilk-CUE). These samples were stored for 4 days at 5°C and analyzed for semen quality. The result shows the differences between the extenders were not significant for the initial and final percent sperm motility, except for soymilk. There were no significant differences in the extenders for initial and final percent live-spermatozoa except in the spermatozoa extended in soymilk extenders. Out of the four extenders tested for semen preservation in this study, soymilk extender and soymilk-CUE least supported sperm motility and liveability, although soymilk-CUE was better than soymilk. The problem of the poor performance of the soymilk and soymilk-CUE could be due to the concentration of soybean fluid content and/or the antinutritional factors probably present in the soymilk due to the mode of preparation. Further studies are suggested along these lines.
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