Abstract
The Morphological Changes of Uterus in Postnatal Development of Heifers
Highlights
The uterus of the mammals is the organ of pregnancy (Senger, 2011)
Samples were fixed for light microscopy (LM) in formaldehyde and for scanning by electron microscope (SEM) and transmissive electron microscopy (TEM) in glutaraldehyde
At the time of hypoglycaemia, the ovarian weight decreased by 4.4% and the uterine weight decreased by 17.1%
Summary
The uterus of the mammals is the organ of pregnancy (Senger, 2011). It is a two-armed, muscular organ consisting of cervix, corpus and two cornua. The body is formed from the caudal parts of the corners which form the longest part of the uterus, 25–30 cm (Bielaňski, 1972; Salisbury et al, 1985), but according to McDonald (1975) it is 35–40 cm. The length of the neck is from 1.5 cm in heifers to 8 cm in cows. According to Bielaňski (1972), heifers have 6.6 cm long necks and cows 5–11 cm long and according to McDonald (2003) 8–10 cm in multi-breeding cows. The length and diameter of the cervix is greater for non-pregnant adult cows than for heifers.
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