Abstract
Dystocias may cause significant economic losses for cattle raisers due to reduction in milk production and fertility, premature culling, and additional expenses with veterinary services. According to many studies on this subject, most difficult births are related to fetal-pelvic incompatibility. Therefore, we measured the pelvic height, width and area of 236 Holstein dairy cows by pelvimetry. The animals were between their second and sixth parturition and were raised in a farm in Inhauma, Minas Gerais. Mean values for pelvic measurements were: 18,62 ± 1,21 cm (width), and 19,911 ± 1,61 cm (height). Results indicate that the majority of cows may be classified as dolichopellics, 20,33% as platypellics, and 11,01% as mesatipellics.
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