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- W299025087 abstract "This study aimed at creating regression equations capable of predicting gestational age and birth weight, based on parameters of fetal measurement. Was examined 164 fetuses, being 66 Dorper (27 males; 39 females), 64 Morada Nova (8 males; 56 females), and 34 Damara (14 males; 20 females), on gestation days 30 and 45. Was measured the parameters crown-rump length (CCC), area of the fetus (AF), perimeter of the fetus (FP) and volume of the fetus (VF); area of the embryo vesicle (AV), perimeter of the embryo vesicle (PV) and volume of the embryo vesicle (VV). Gestational age was correlated (P < 0.05) with fetal and vesicle measurements. The fetal determination coefficient was always higher than the embryo vesicle coefficient, especially regarding the crown-rump length, which was more reliable. Based on the evaluated correlations, we generated multiple regression equations for each breed, which allowed us to estimate the date of delivery after each fetal and vesicle measurement carried out on the 30 th and 45 th day of pregnancy. We also created multiple regression equations for each breed, to estimate gestational age according to variables of the fetuses and of the embryo vesicle. Correlations used to estimate birth weight, were low or negative for days 30 and 45 of pregnancy. Based on the results herein reported we conclude that ultrasound associated with specific linear regression equations, can be used to determine the gestational age of ewes." @default.
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- W299025087 date "2007-01-01" @default.
- W299025087 modified "2023-09-26" @default.
- W299025087 title "Ultrasound fetal measurement parameters for early estimate of gestational age and birth weight in ewe (1)" @default.
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