Study: Mare Age May Influence Foal Sex
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Researchers from the Pontifical Catholic University of Minas Gerais found that mares older than 15 were more likely to deliver fillies than younger mares, reports EQUUS magazine. The researchers reviewed breeding records of almost 60,000 Mangalarga Marchador horses born between 1990 and 2011. They then compared the sex ratio of offspring to the age of […]
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