An In-Vitro Criterion for Comparative Assessment of Fertility Characteristics of Bull Semen in Kenya
Mutembei H.M., Origa R., Agumbah G.J.O
Full Length Research Paper I Published July,2016
Journal of Agricultural Science and Food Technology
ABSTRACT
The goal of a contemporary dairy farmer is to maximise the
efficiency of milk production. Reproductive efficiency of
the cow and bull fertility is major component of efficient
production. General macro- and micro semen characteristics
such as volume, motility and concentration have been majorly
used to assess bull fertility in Kenya. Confounding reports
as to the correlation between these parameters and bull
fertility in Kenya may be due to their subjectivity and
variability. Therefore, the need to develop objective and
consistent analysis methods was considered necessary for the
present study. Room temperature and deep frozen semen
samples from six bulls at the Central Artificial
Insemination Station in Kenya were used. The volume,
motility, concentration, morphology, cleavage, Blastocyst
and non- return rates of all the bulls were assessed.
Correlation analysis was done between the various
parameters. Significant differences (P≤0.05) were observed
between breeds as well as between individual bulls within
the same breed. There was a positive correlation observed
between cleavage and blastocyst formation rates with semen
motility and a negative correlation with concentration.
Correlation was also observed between percentage of
morphological abnormalities and cleavage and blastocyst
rate. The results suggest that no single parameter can be
used on its own to objectively predict bull fertility.
Therefore multiple characteristics should be assessed in
order to try to predict fertility. In addition, motility,
concentration, cleavage and blastocyst formation rates can
be used to assess bull fertility according to this study.
Key Words: Artificial Insemination, Bull, In-vitro
fertilization, Cleavage and Blastocysts rate.
- Journal of Agricultural Science and Food Technology (JASFT)
- Journal of Medical and Biological Science Research (JMBSR)
- Journal of Scientific Research and Essays (JSRE)
- Research Journal of Educational Studies and Review (RJESR)
- Journal of Physical Science and Environmental Studies (JPSES)
- Research Journal of Engineering and Technology (RJET)
- Pearl Journal of Management, Social Science and Humanities (PJMSSH)