JERUSALEM (VINnews) — Israel’s Red Heifer Project has reached a significant new milestone in its effort to produce a new generation of halachically valid red heifers.

The Red Heifer Visitor Center in Ancient Shiloh announced on Monday that it has begun a controlled artificial insemination program involving two cows. The initiative is intended to secure the future of the halachic project, which originally centered on four red heifers imported from the United States.

Over time, the original animals have changed. Two of the four heifers were disqualified for halachic use after black and white hairs appeared in their coats. The two remaining completely red (“tamimot” – without blemish) heifers have now reached approximately four years of age.

Although Jewish law does not set a formal age limit for a red heifer, researchers at the Red Heifer Center decided not to take unnecessary risks and instead prepare for the future. The current breeding program uses advanced genetic research and modern reproductive techniques to maximize the chances of producing female calves with entirely red coats that would meet the halachic requirements.

Interestingly, the insemination is being carried out using the two heifers that were already disqualified, as scientific studies indicate that, when paired with carefully selected genetic material, they still have a high likelihood of producing offspring that could be fully qualified under Jewish law.

Project officials emphasized that all of the cattle are raised under strict veterinary and halachic supervision, combining scientific expertise with religious requirements to prevent any injury or blemish that could invalidate a future red heifer.

They contrasted this with a separate case involving a red heifer recently discovered in the Golan Heights whose ear was pierced for identification purposes—a procedure that raised complex halachic questions about whether it rendered the animal unfit.

Representatives of the center explained the broader purpose of the project:

“From the very beginning, our goal has been to study and prepare red heifers for the day when it becomes possible to perform the purification ritual on the Mount of Olives in accordance with halacha. Especially during these days, when we commemorate the destruction of the Holy Temple, we are preparing for the day when it can be rebuilt in a state of ritual purity.”

There is a halachic dispute regarding the possibility of bringing a red heifer prior to the construction of the Third Temple. Some views maintain that the heifer must be prepared opposite the entrance to the Temple, and when there is no Temple this cannot be done, while others do not require this stipulation, which is not mentioned in the Rambam. Other prerequisites include preparing the red heifer using people who have never been contaminated by proximity to dead people, and for this purpose some have suggested raising children in secluded communities where they will be pure, enabling them to perform the basic aspects of preparation.