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5
10
15
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25
30
35
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45
1-3 mm > 3-6 mm > 6 mm
Bla
stoc
yst y
ield
(%)
Follicle size group
Comparative blastocyst yield for different follicle sizes
Grade A
Grade B
Average
Utilizing state of the art reproductive technologies to produce and deliver appropriate cattle genotypes
• Highly reproductive • Adapted to harsh environments
• High milk production potential • Poorly adapted to low input systems
Sexed semen
Harvested Oocytes through
OPU
IVEP Embryos • Natural grazing conditions • Good recipient capabilities
Results
SIFET Calves
From Boran cows, even small follicles produce high quality (grade A) blastocysts
April 2010
The good news is … Availability & affordability of SIFET is limited
And the not so good news is …
Indigenous breeds are excellent oocytes donors and surrogates
Partners: UoN, EMBRAPA Brazil, ADC, CAIS, Kakuzi ranch, Ol Pajeta ranch, Dagoretti Slaughter Houses
Suitable dairy heifer genotypes for low input systems are in short supply Some indigenous cattle breeds are threatened and should be conserved
By: Mutembei H, Muasa B, Muraya J, Okeyo AM
Embryo Transfer
SIFET Laboratory
Boran cows as surrogates
Embryos and oocytes available for conservation, breed improvement and diagnostic studies
Sexed semen, In-vitro Fertilization and Embryo Transfer (SIFET) and Ovum Pick-Up (OPU) technologies offer opportunities for better utilization and conservation of
indigenous cattle and can produce animals of strategic value
Exotic bulls Indigenous cows