Influence of gestation phase and pregnancy type on echographic determination of foetal number in sheep
2008
Yotov, S., Thracian University, Stara Zagora (Bulgaria)
This study examined the influence of gestation phase and pregnancy type on foetal number in sheep from wool, dairy and meat breeds. 227 animals were studied using echography. We show here that echography can be used in determining the best time for foetus enumeration, which was from day 41-50 of pregnancy. The accuracy was the highest with singleton pregnancies, and was significantly reduced with increasing foetal number. In conclusion the gestational phase and pregnancy type influence significantly the echographic determination of the foetal number in sheep.
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