Seventy nine mature, alpacas were scanned every 10-14 days using real time ultrasonography to visualise the foetus. There was a 24% foetal loss between days 21-30 of gestation and parturition, with the maximum loss occurring between days 21-30 and days 31-40 of gestation. There was a 5% loss of foetuses after day 100 of gestation.

JN, Clarke, AJ Pearson, RMW Sumner, DL Johnson, JL Dobbie, JE Wildermoth, and AL Wrigglesworth

Proceedings of the New Zealand Society of Animal Production, Volume 53, , 371-376, 1993
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