Echo-Biometry Assessment of a Quadruple Pregnancy in a Captive Capybara.

IF 1.5 2区农林科学 Q2 VETERINARY SCIENCES Veterinary Radiology & Ultrasound Pub Date : 2025-01-01 DOI:10.1111/vru.70003

Flavia M P M Donoso, Cristiane S Pizzutto, Juan Contardo, Stefano C F Hagen, Daniel Sáez, Fernanda B P Nunes, Adriana H Almeida, Antônio C Assis Neto

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Abstract

A 5-year-old female capybara, conditioned ex situ before mating, was monitored by ultrasound to establish prenatal growth and assess fetal echo-biometric variables. The records were taken twice weekly until delivery (i.e., 5 months). The measurements included gestational sac width (GSW), gestational sac height (GSH), gestational sac length (GSL), crown-rump length (CRL), trunk diameter (TD), heart major axis (HMA), biparietal diameter (BDP), and femur length (FL). The gestational sacs were detected on the 25th day after mating (DAM), embryos appeared on the 42nd DAM, and the parturition of four healthy offspring occurred three days after reaching averages of 30.74 cm (CRL), 8.65 cm (TD), 5.37 cm (HMA), and 6.08 cm (BDP). For initial pregnancy and fetal growth, GSL and BDP seem to be the best measurements. The formulas shown here can be a reference for gestational age estimation. This longitudinal study shows that ultrasonography is helpful for early pregnancy diagnosis and gestational age determination in capybaras.

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圈养水豚四胎妊娠的回声生物测量评估。

一只5岁的雌性水豚，在交配前条件移位，通过超声监测来确定产前生长和评估胎儿回声生物特征变量。记录每周两次，直到分娩（即5个月）。测量包括妊娠囊宽度（GSW）、妊娠囊高度（GSH）、妊娠囊长度（GSL）、冠臀长度（CRL）、躯干直径（TD）、心脏长轴（HMA）、双顶骨直径（BDP）和股骨长度（FL）。在交配后第25天（DAM）检测到妊娠囊，第42天（DAM）出现胚胎，在平均体长达到30.74 cm （CRL）、8.65 cm （TD）、5.37 cm （HMA）和6.08 cm （BDP）后3天分娩4只健康子代。对于初孕和胎儿生长，GSL和BDP似乎是最好的测量。本文给出的公式可作为胎龄估计的参考。本纵向研究表明超声检查有助于水豚早期妊娠诊断和胎龄测定。

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来源期刊

Veterinary Radiology & Ultrasound 农林科学-兽医学

CiteScore

2.40

自引率

17.60%

发文量

133

审稿时长

8-16 weeks

期刊介绍： Veterinary Radiology & Ultrasound is a bimonthly, international, peer-reviewed, research journal devoted to the fields of veterinary diagnostic imaging and radiation oncology. Established in 1958, it is owned by the American College of Veterinary Radiology and is also the official journal for six affiliate veterinary organizations. Veterinary Radiology & Ultrasound is represented on the International Committee of Medical Journal Editors, World Association of Medical Editors, and Committee on Publication Ethics. The mission of Veterinary Radiology & Ultrasound is to serve as a leading resource for high quality articles that advance scientific knowledge and standards of clinical practice in the areas of veterinary diagnostic radiology, computed tomography, magnetic resonance imaging, ultrasonography, nuclear imaging, radiation oncology, and interventional radiology. Manuscript types include original investigations, imaging diagnosis reports, review articles, editorials and letters to the Editor. Acceptance criteria include originality, significance, quality, reader interest, composition and adherence to author guidelines.