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Updated: Jun 8, 2026
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High Frequency Ultrasound for the Analysis of Fetal and Placental Development In Vivo
Published on: November 8, 2018
Morphometric analysis of yak placentomes during gestation.
1Gansu Province Livestock Embryo Engineering Research Center, Department of Clinical Veterinary Medicine, Faculty of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China.
Anatomical Record (Hoboken, N.J. : 2007)
|September 11, 2010
Summary
Yak placentome development shows no change in number but increases in size and volume during gestation, enhancing maternal-fetal contact for optimal placental function.
Area of Science:
- Reproductive biology
- Comparative anatomy
- Veterinary medicine
Background:
- Placentomes are crucial for nutrient and gas exchange between mother and fetus.
- Understanding yak placentome morphology is vital for improving yak reproductive efficiency.
Purpose of the Study:
- To investigate the morphological and histological changes of yak placentomes throughout gestation.
- To correlate these changes with placental function and fetal development.
Main Methods:
- Morphometric analysis of placentomes from 31 yaks at various gestational stages.
- Histological examination of placentome components, including fetal villi and caruncular endometrium.
Main Results:
- Placentome number remained constant, but size and volume increased significantly until 181-210 days of gestation.
- Placentomes in the pregnant horn were larger and thicker than in the non-pregnant horn after 61 days.
- Increased fetal villi density and maternal-fetal contact area suggest enhanced placental function.
Conclusions:
- Yak placentome morphology dynamically changes during gestation to support fetal growth.
- Increased placentome size and volume enhance maternal-fetal interface, optimizing placental function for fetal development.
