A good recovery rate was obtained with this technique and very
few ejaculates were discarded.

With the standard dilution of 1:3 the quality of the semen at
this Centre was such that it was exceptional for a pellet to contain
less than 10 million live spermatozoa. In order to make further
economies in semen utilization, trials are in progress to determine
if higher dilution of the semen will have an adverse effect on
fertility level.

The dispenser was used for 54,000 first inseminations and
proved to be a practical instrument for handling and identifying
pelleted semen in the field.

Acknowledgements

The author gratefully acknowledges the help of the Management
Committee and Staff of the Hampshire Cattle Breeders Society and
also that of Prof. Quenouille of Southampton University for his
statistical appraisal of the results.
References

1. Nagase, Niwa & Grahame Proc. 5th Int. Congress Animal Reprod.
Vol.4 1964.

2. Madden, D.H.L., Proc. 3rd Int., Congress Animal Reprod. 1956
3. Isbister, J., Proc. Soc. Study Animal Breed. November 1967.

 

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