Researchers at the Hebrew University Veterinary Teaching Hospital monitored six pregnant bitches from five breeds to test whether fetal fluids taken in mid‑pregnancy can reveal fetal genetic profiles. Genetic studies in dogs contribute significantly to understanding inherited diseases in humans and other species; this is primarily due to the close genomic relationship dogs share with humans, allowing insights into various health conditions.

The work followed the dogs from estrus to seven weeks postpartum and combined periodic reproductive imaging with targeted sampling to assess genetic conditions and traits detectable before birth. The study team said the approach aimed to evaluate whether non‑terminal access to fetal genetic material could inform diagnosis and breeding decisions. In fact, this methodology echoes broader efforts in genetic research, which often explore how inherited diseases manifest similarly across species, particularly within genetically predisposed dog breeds.

The cohort comprised six owned bitches representing five breeds, including Shih‑tzu, Border Collie, Maltese, Australian Shepherd and Jack Russell Terrier. Ultrasonographic scans of the reproductive tract and blood serum progesterone levels were conducted periodically to monitor pregnancy health and stage while the bitches were supervised at the hospital. Dog owners interested in genetic screening for their pets can consult with their veterinarians to determine appropriate tests based on breed-specific conditions.

At roughly mid‑pregnancy, fetal fluids were collected around 45 days post‑ovulation by ultrasound‑guided transabdominal centesis and used for genomic analysis. The investigators compared the genetic material recovered from those allantoic and amniotic fluids with neonatal samples taken later, examining whether fluid‑derived DNA reflected inherited variants and phenotypic traits. Common genetic conditions such as hip dysplasia and certain inherited eye disorders potentially detected in this study are critical for pre-breeding assessments.

Dr. Tal, a theriogenologist, and Prof. Kahila Bar‑Gal, a professor at the university, are named among the researchers associated with the study. The institutional HUVTH Committee of Animal Handling and Experimentation approved all procedures conducted during the research, and the animals were client‑owned and monitored through the postpartum period.

Puppy health examinations and neonatal sampling were carried out seven weeks after birth to allow genotyping and validation of the fetal fluid results against offspring DNA. The methodology — combining imaging, timed sampling and later neonatal checks — provided a sequential confirmation of fetal origin and diagnostic concordance. This aligns well with the need for early identification of genetic issues, which can affect breeding management and dog health outcomes.

The paper reporting the findings was published in a Nature portfolio journal and describes how genomic analysis of mid‑gestation canine fetal fluids captured fetal genetic profiles, including disease‑associated variants and traits; the study is available in Scientific Reports here. Canine genetic research frequently informs broader efforts to map inherited diseases, a relationship explored by organizations such as the Broad Institute, which highlights how breed structure can aid discovery.

The authors report that fetal fluid analysis reliably reflected the fetal genetic profile, supporting its potential as a prenatal diagnostic tool in dogs. By demonstrating non‑terminal access to fetal DNA during mid‑pregnancy, the study suggests a pathway for earlier identification of inherited variants that affect health and breeding management. Understanding these variants can guide owners in screening their pets for common genetic conditions such as degenerative myelopathy and heart disease.

Where the research leads next will depend on further validation and wider clinical application, but the sequential monitoring from estrus through seven weeks postpartum established a reproducible timeline for sampling and follow‑up in a clinical veterinary setting.

Source

Original reporting: view the original article.