[The fertility of buck semen after a 11 year storage in liquid nitrogen (-196 deg C)]
1982
Samouilidis, S. | Foukos, A. | Tsakalof, P. (Aristotelion Univ., Thessaloniki (Greece). School of Veterinary Studies)
A total of 30 goats were inseminated with frozen buck semen that had been stored for a period of 11 years. Of these goats, 16 conceived on the first (52.33%) and 4 on the second insemination (28.57%), i.e. a total of 20 animals (66.66%) conceived and kidded as follows: 9 animals had singles, while the remaining 11 had twins, i.e. a total of 31 kids were born. The number of the male kids amounted to 26 (83.87%) and that of the female kids to 5 (16.13%). Inseminations with the same batch of frozen buck semen carried out soon after freezing, i.e. 11 years previously, had the following results: a total of 54 goats were inseminated, of which 38 animals (70.37%) conceived and kidded. It is concluded that the fertility of frozen buck semen after a period of storage of 11 years declined by 3.71%. This difference in conception rate was statistically insignificant.
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