@article{article_604959, title={Cervical Insemination with Frozen Thawed Semen in Goats at Different Breeding Age}, journal={Kocatepe Veterinary Journal}, volume={12}, pages={357–362}, year={2019}, DOI={10.30607/kvj.604959}, author={Tekin, Koray}, keywords={Dondurulmuş sperma,fertilite,gebelik,üreme yaşı,suni tohumlama}, abstract={<p class="MsoNormal" style="text-align:justify;"> <span style="font-size:11pt;font-family:Garamond, serif;color:#1C1D1E;">Artificial insemination (AI) in goat is currently
limited by the poor fertility obtained following the cervical insemination with
frozen-thawed semen. The objective of the present study was to determine the
efficiency of frozen semen use in two different breeding ages at Saanen goats.
The effects of synchronization and fertility rates were also examined.
Ninety-eight (98) Saanen goats were divided into two groups: Group-1 = 49
(7-months-old) and Group-2 = 49 (19-month- old) does. Estrus was
synchronized by impregnated intravaginal sponges (30 mg; </span> <span style="font-size:11pt;font-family:Garamond, serif;">fluogestone
acetate </span> <span style="font-size:11pt;font-family:Garamond, serif;color:#1C1D1E;">,
FGA), and i.m. administration of 50 µg of cloprostenol (PGF2α) and
pregnant mare serum gonadotropin (PMSG, 500 IU), at 48 h before
sponge removal. Cervical fixed time AI was carried out with frozen semen
43 h after removal of the sponges during the breeding season. Estrus was
detected by teaser buck. The occurrence of estrus in Group-1 and Group-2 were
71.4%, 63.3%, respectively (p>0.05). Sixty-six (66) goats were inseminated
with frozen </span> <span style="font-size:11pt;font-family:’Cambria Math’, serif;color:#1C1D1E;">‐ </span> <span style="font-size:11pt;font-family:Garamond, serif;color:#1C1D1E;">thawed semen. The pregnancy rate was determined by
abdominal scanning. Pregnancy rates were (Group-1: 31.4%, Group-2: 32.3%) not
differed significantly between age groups (p>0.05). Besides, higher lambing
rates were obtained in Group-1 (145.5%) than in Group-2 (90.0%) due to
increased prolificacy and reduced embryonic failure. In conclusion, </span> <span style="font-size:11pt;font-family:Garamond, serif;">Saanen goats in younger ages, starting
from the 7 months old age could be included in the breeding programs and could
provide several benefits such as higher percentages of synchronization success
and prolificacy.  </span> <span style="font-size:11pt;font-family:Garamond, serif;color:#1C1D1E;"> </span> </p> <p> </p> <p> </p>}, number={3}, publisher={Afyon Kocatepe Üniversitesi}